*NOTE: This section includes amendments by temporary legislation that will expire on September 25, 2026. To view the text of this section after the expiration of all emergency and temporary legislation affecting this section, click this link: Permanent Version.*

1. (a) Deductions allowed. — The following deductions shall be allowed from gross income in computing net income of corporations, financial institutions, unincorporated businesses and partnerships:

   1. (1) Expenses. — All the ordinary and necessary expenses paid or incurred during the taxable year in carrying on any trade or business which are deductible under the provisions of § 162(a) of the Internal Revenue Code of 1986; except, that:

      1. (A) For tax years beginning after December 31, 2021, the deduction allowed for domestic research and experimental expenditures under § 174A of the Internal Revenue Code of 1986 shall be:

         1. (i) Charged to the capital account; and
         2. (ii) Allowed as an amortization deduction of such expenditures ratably over the 5-year period beginning with the midpoint of the taxable year in which such expenditures are paid or incurred;
      2. (B) No taxpayer shall be allowed the election to amend a tax return pursuant to § 174A(f)(1) of the Internal Revenue Code of 1986; and
      3. (C) No taxpayer shall be allowed the election under § 174A(f)(2) of the Internal Revenue Code of 1986.

   2. (2) Interest. — All interest paid or accrued within the taxable year on indebtedness which is deductible under the provisions of § 163 of the Internal Revenue Code of 1986; except, that:

      1. (A) In computing the limitation on business interest, as allowed under § 163 of the Internal Revenue Code of 1986, "adjusted taxable income" means the adjusted taxable income determined under § 163(j)(8)(A) of the Internal Revenue Code of 1986; except, that § 163(j)(8)(A)(v) shall not apply; and
      2. (B) "Floor plan financing interest", as defined under § 163(j)(9) of the Internal Revenue Code of 1986, shall not apply.

   3. (3) Taxes. — All taxes paid or accrued during the taxable year which are deductible under the provisions of § 164 of the Internal Revenue Code of 1986; provided, however, that no deduction shall be allowed for:

      1. (A) Income taxes; or
      2. (B) Franchise taxes imposed by this chapter.

   4. (4) Losses. —

      1. (A) Losses sustained during the taxable year and not compensated for by insurance or otherwise which are deductible under the provisions of § 165 of the Internal Revenue Code of 1986:

         1. (i) If incurred in a trade or business; or
         2. (ii) If incurred in any transaction entered into for the production or collection of income subject to tax under this chapter, or for the management, conservation, or maintenance of property held for the production of income subject to tax under this chapter, though not connected with any trade or business; or
         3. (iii) Of property not connected with a trade or business, if the losses arise from fire, storm, shipwreck, or other casualty, or from theft.
      2. (B) [Deleted].
   5. (5) Bad debts. — Debts ascertained to be worthless and determined as deductible under § 166 and related sections of the Internal Revenue Code of 1986.
   6. (6) Insurance premiums. — All fire, tornado, and casualty insurance premiums paid during the taxable year in connection with property held for investment or used in a trade or business, the income from which is taxable under this chapter.

   7. (7)

      1. (A) Depreciation. — A reasonable allowance for exhaustion, wear, and tear of property used in the trade or business, including a reasonable allowance for obsolescence, and including in the case of natural resources, allowances for depletion as permitted by reasonable rules that the Chief Financial Officer may promulgate. The basis upon which such allowances are to be computed shall be the basis provided for in § 47-1811.04.

      2. (B) Notwithstanding the provisions of subparagraph (A) of this paragraph:

         1. (i) No deduction shall be allowed for the special depreciation allowance under § 168(k) of the Internal Revenue Code of 1986;
         2. (ii) There shall be allowed as a deduction for the cost of property elected to be treated as not chargeable to capital account under § 179 of the Internal Revenue Code of 1986 an amount of equal to the lesser of $25,000 or the actual cost of the property for the year the property is placed in service;
         3. (iii) No deduction shall be allowed for the special depreciation allowance under § 168(n) of the Internal Revenue Code of 1986; and
         4. (iv) A depreciation deduction may be allowed for an investor in a shared equity financing agreement as provided in § 47-3507.
   8. (8) Charitable contributions. — Contributions or gifts, actually paid within the taxable year to or for the use of the District of Columbia, but only if the contribution or gift is made exclusively for public purposes, or any religious, charitable, scientific, literary, military, or educational institution, and no part of the net income of which inures to the benefit of any private shareholder or individual; provided, however, that such deductions shall be allowed only in an amount which in the aggregate of all such deductions does not exceed 15% of the adjusted gross income. For purposes of this section, the term "actually paid", when used with reference to the District of Columbia, includes compensation waived under § 1-611.15, and no charitable contributions may be carried forward under this paragraph.
   9. (9) Contributions of an employer to an employees’ trust or annuity plan and compensation under a deferred-payment plan. — In the return of an employer, contributions made by such employer to an employees’ trust or annuity plan and compensation under a deferred-payment plan to the extent that deductions for the same are allowed the taxpayer under the provisions of § 404 of the Internal Revenue Code of 1986 (§ 404 of Title 26, United States Code).
   10. (10) Allocation of deductions. — In the case of corporations, financial institutions and unincorporated businesses, the deductions provided for in this section shall be allowed only for and to the extent that they are connected with income arising from sources within the District within the meaning of §§ 47-1810.01 to 47-1810.03; and the proper apportionment and allocation of the deductions to be allowed shall be determined by the Mayor under formula or formulas provided for in § 47-1810.02.

   11. (11) Reasonable allowance for salaries. — A reasonable allowance for salaries or other compensation for personal services actually rendered, except:

       1. (A) No allowance shall be made for salaries or wages in an amount equal to the amount of the credit allowed under §§ 47-1808.04 and 47-1808.07; and
       2. (B) In the case of an unincorporated business subject to the tax imposed by subchapter VIII of this chapter, the aggregate deduction for services rendered by individual owners or members actively engaged in the conduct of the unincorporated business shall not exceed 30% of the net income of the business, computed without the benefit of this deduction.

   12. (12) Regulated investment companies. — In the case of a regulated investment company as defined in § 851 of the Internal Revenue Code of 1986, which meets the requirements of § 852(a) of the Internal Revenue Code of 1986:

       1. (A) The dividends paid by the regulated investment company which qualify for the dividends-paid deduction under § 852(b)(2)(D) and 852(b)(3)(A)(ii) of the Internal Revenue Code of 1986, including dividends considered as having been paid during the taxable year by reason of § 855 of the Internal Revenue Code of 1986; and
       2. (B) Such amount as the regulated investment company shall designate for purposes of § 852(b)(3)(D)(ii) of the Internal Revenue Code of 1986 as undistributed long-term capital gains to be included in computing the long-term capital gains of the shareholder. Such amounts shall be included as gains from the sale or exchange of capital assets, as defined in this chapter, in computing such shareholder’s taxable income as defined in § 47-1806.1 [§ 47-1806.01].
   13. (13) Real estate investment trusts. — In the case of a real estate investment trust as defined in § 856 of the Internal Revenue Code of 1986, which meets the requirements of § 857(a) of the Internal Revenue Code of 1986, the dividends paid by the real estate investment trust which qualify for the dividends-paid deduction under § 857(b)(2)(C) and § 857(b)(3)(A)(ii) of the Internal Revenue Code of 1986, including dividends considered as having been paid during the taxable year by reason of § 858 of the Internal Revenue Code of 1986.

   14. (14) Net operating losses. — In computing the net income of a corporation, an unincorporated business, or a financial institution, there shall be allowed a deduction for net operating losses, in the same manner as allowed under § 172 of the Internal Revenue Code.

       1. (A) For tax years beginning after December 31, 1999, net operating loss carrybacks shall not be allowed. Corporations, unincorporated businesses, or financial institutions, shall be allowed a deduction for apportioned District of Columbia net operating loss carryover to be deducted from the net income after apportionment.
       2. (B) In the year of the loss, the apportioned District of Columbia net operating loss shall be computed by multiplying the District of Columbia apportionment factor for the loss year against the amount of the net operating loss as defined in § 47-1801.04(34).
       3. (C) The entire amount of the apportioned net operating loss for any taxable year shall be carried forward to the earliest of the succeeding taxable years to which such loss may be carried. The portion of such loss which may be carried to each of the other taxable years shall be the excess, if any, of the amount of such loss over the sum of the apportioned taxable net income, adjusted by any modifications specified in this chapter, for each of the tax years to which such loss may be carried.
       4. (D) The provisions of §§ 381, 382, and 384 of the Internal Revenue Code apply to carryovers. The limitation amount determined under § 382 shall be applied to net income, after apportionment, in each post-change year to which loss is carried.

       5. (E)

          1. (i) In the case of a merger, acquisition, or consolidation, any pre-change losses and built-in losses, to the extent apportioned or allocated to the District of Columbia, with the additions, subtractions, modifications and other adjustments required for purposes of this chapter, shall be carried forward and subtracted when computing District of Columbia taxable income.
          2. (ii) If an affiliated group files a federal consolidated return for District of Columbia net operating loss purposes, the net operating loss shall be computed as if the federal return has been filed on a separate basis for the District of Columbia.
          3. (iii) If a company has been given permission by the Mayor to file a consolidated return, only the net operating losses of those corporations listed on the District of Columbia consolidated return may be included in determining the net operating loss deduction.
       6. (F) No deduction shall be allowed for or with respect to losses connected with income producing activities if the income therefrom would not be required to be either assignable to the District of Columbia or included in computing the taxpayer’s District of Columbia net income.
       7. (G) The Mayor may require a taxpayer to furnish any information necessary to support a claim for deduction under this section, and no deduction shall be allowed unless the information is furnished.
   15. (15) Health insurance premiums. — All health insurance premium expenditures for domestic partners and family members of employees if offered to all of its full-time employees who are District of Columbia residents.
   16. (16) Subpart F income. — In computing the taxable income of a corporation, an unincorporated business, or a financial institution, there shall be allowed a deduction for Subpart F income as defined in § 47-1801.04(33) for taxable years beginning after December 31, 1994.
   17. (17) [Dividends from a wholly-owned subsidiary]. — Notwithstanding paragraph (10) of this subsection and § 47-1810.01(a)(2), in computing the net income of a corporation, there shall be allowed a deduction for all dividends received on or after March 1, 1997, from a wholly-owned subsidiary.

   18. (18) Election to expense certain depreciable business assets. —

       1. (A) There shall be allowed as a deduction for the cost of property elected to be treated as not chargeable to capital account under § 179 of the Internal Revenue Code of 1986 an amount equal to the lesser of $25,000 or the actual cost of the property for the year the property is placed in service.
       2. (B) [Repealed].
   19. (19) Repealed.

   20. (20) Qualified Opportunity Fund Capital Gains. --

       1. (A) Deferral of a capital gains tax payment for investing in a qualified opportunity fund ("QOF") shall be realized only if the taxpayer invests in a QOF that meets the criteria set forth in subparagraph (D) of this paragraph.

       2. (B)

          1. (i) Reduction of capital gains tax liability through a 10% step-up in basis, if invested in a QOF for 5 years prior to December 31, 2026, and an additional 5% step-up in basis, if invested in a QOF for 7 years prior to December 31, 2026, shall be realized only if the taxpayer invests in a QOF that meets the criteria set forth in subparagraph (D) of this paragraph;
          2. (ii) For amounts invested in a QOF after December 31, 2026, the reduction of capital gains tax liability through a 10% step-up basis, if invested in a QOF for 5 years, pursuant to § 1400Z-2(b) of the Internal Revenue Code of 1986, shall be realized only if the taxpayer invests in a QOF that meets the criteria set forth in subparagraph (D) of this paragraph.

       3. (C)

          1. (i) Abatement of capital gains tax on an investment of capital gains in a QOF for at least 10 years before December 31, 2047, shall be realized only if the taxpayer invests in a QOF that meets the criteria set forth in subparagraph (D) of this paragraph;
          2. (ii) For amounts invested in a QOF after December 31, 2026, the abatement of capital gains tax on an investment of capital gains held in a QOF for at least 10 years, pursuant to § 1400Z-2(c) of the Internal Revenue Code of 1986, shall be realized only if the taxpayer invests in a QOF that meets the criteria set forth in subparagraph (D) of this paragraph.

       4. (D) To receive the benefits described in subparagraphs (A), (B), and (C) of this paragraph, the taxpayer shall:

          1. (i) Invest in a QOF that:

             1. (I) Is certified by the Mayor as an eligible QOF pursuant to subparagraph (E) of this paragraph;
             2. (II) Has invested at least the value of the taxpayer's investment in the QOF in a qualified opportunity zone in the District; and
             3. (III) Has submitted its IRS Form 8996 to the Office of Tax and Revenue for the tax year in which the taxpayer is seeking the benefits described in subparagraphs (A), (B), and (C) of this paragraph; and
          2. (ii) Submit an IRS Form 8997 to the Office of Tax and Revenue for the tax year in which the taxpayer is seeking the benefits described in subparagraphs (A), (B), and (C) of this paragraph.

       5. (E) To be certified by the Mayor as an eligible QOF, a QOF shall submit to the Mayor documentation showing:

          1. (i) That some or all of its investments in qualified opportunity zone businesses and qualified opportunity zone business property are in businesses or property that:

             1. (I) Have been selected by the District government for a grant, loan, tax incentive, tax abatement, or other benefit or incentive intended to promote economic or community development in the District;
             2. (II) Have been selected by the Office of the Deputy Mayor for Planning and Economic Development to manage the redevelopment of a property, with respect to a business, or that are owned or disposed of by the District government, with respect to a property;
             3. (III) Have an unconditioned resolution of support from the Advisory Neighborhood Commission in which the business or property is located or a conditional resolution of support from the Advisory Neighborhood Commission in which the business or property is located and the Mayor determines that each of the conditions of the resolution have been met; or
             4. (IV) Are located in the District and have been scored by the QOF using the Urban Institute's Opportunity Zone Community Impact Assessment Tool, or other assessment tool approved by the Mayor, and received a score of 75 (or its equivalent) or greater; and
          2. (ii) That the dollar amount of the investments that the QOF has made in qualified opportunity zone businesses and qualified opportunity zone business property meets the standards set forth in sub-subparagraph (i) of this subparagraph.
2. (a-1) Deduction for domestic production activities disallowed. — In computing net income of corporations, financial institutions, unincorporated businesses, and partnerships, no deduction from gross income shall be allowed for the amount attributable to domestic production activities under section 199 of the Internal Revenue Code of 1986 [26 U.S.C. § 199].
3. (b) Deductions allowed — Generally. — [Repealed].
4. (b-1) [Deductions allowed — Long-term care insurance]. — [Repealed].
5. (b-2) [Deductions allowed — Teacher expenses]. — [Repealed].
6. (b-3) Depreciation. — [Repealed].
7. (b-4) Limitation on itemized deductions. — [Repealed].
8. (b-5) Capital Gains from a Qualified Opportunity Fund. – The capital gains deduction for investing in a qualified opportunity fund shall apply to an individual, estate, or trust in the same manner as set forth in § 47-1803.03(a)(20).
9. (c) Standard deduction. — Every individual who claims the standard deduction on his or her federal income tax return shall claim the applicable standard deduction specified in § 47-1801.04(26). Every individual who itemizes deductions on his or her federal income tax return shall itemize the deductions permissible under this chapter. If spouses or domestic partners file separate returns, the applicable standard deduction shall be allowed to neither if the net income of one of the spouses or domestic partners is determined by itemizing deductions.

10. (d) Deductions not allowed. — In computing net income, no deductions shall be allowed in any case for:

    1. (1) Personal, living, or family expenses;
    2. (2) Any amount paid out for new buildings or for permanent improvements or betterments, made to increase the value of any property or estate;
    3. (3) Any amount expended in restoring property or in making good the exhaustion thereof for which an allowance is or has been made;
    4. (4) Premiums paid on any life insurance policy covering the life of any officer or employee or of any person financially interested in any trade or business carried on by the taxpayer when the taxpayer is directly or indirectly a beneficiary under such policy;
    5. (5) If the net income of an unincorporated business for the taxable year is in excess of the exemption provided in § 47-1808.04, no deduction which is allowed or allowable under subsection (a) of this section from the gross income of any unincorporated business subject to the tax imposed by §§ 47-1808.01 to 47-1808.06 shall be allowed as deduction in the return and computation of the net income of any person entitled to share in the net income of such unincorporated business; and
    6. (6) Expenses incurred to produce income which is either exempt or not subject to taxation under this chapter.

    7. (7)

       1. (A) Any otherwise deductible interest expense or intangible expense if the interest expense or intangible expense is directly or indirectly paid to, or accrued or incurred by, one or more related members in connection directly or indirectly with one or more direct or indirect transactions.

       2. (B) The disallowance under subparagraph (A) of this paragraph shall not apply to any portion of the interest expense or intangible expense to the extent that the corporation establishes, as determined by the Chief Financial Officer, that:

          1. (i) The transaction giving rise to the payment of the interest expense or intangible expense between the corporation and the related member did not have as a principal purpose the avoidance of any portion of the tax due under this title;
          2. (ii) The interest expense or intangible expense was paid pursuant to arm’s length contracts at an arm’s length rate of interest or price; and

          3. (iii)

             1. (I) During the same taxable year, the related member directly or indirectly paid interest expense to, or the interest expense or intangible expense was accrued or incurred by, a person who is not a related member; or

             2. (II)

                1. (aa) The related member was subject to a tax measured by its net income or receipts in the District, a state or possession of the United States, or a foreign nation that has entered into a tax treaty with the United States government;
                2. (bb) A measure of the tax imposed by the District, a state or possession of the United States, or a foreign nation that has entered into a comprehensive tax treaty with the United States government included in the interest expense or intangible expense received by the related member from the corporation; and
                3. (cc) The aggregate effective tax rate imposed on the amounts received by the related member is equal to or greater than 4.5%; provided, that a related member receiving the interest or intangible payment shall not be considered to be subject to a tax merely by virtue of the related member’s inclusion in a combined or consolidated return in one or more states.
       3. (C) A subtraction from federal taxable income shall be allowed from the taxable income of a corporation equal to the amount received as royalties, interest, or similar income from intangibles from a related member, to the extent the related member, with respect to the payment, is denied a deduction under subparagraph (A) of this paragraph or there is a similar deduction denial or addition modification of a state, possession of the United States, or of a foreign nation that has entered into a comprehensive tax treaty with the United States government for intangible expenses or interest expenses paid to related members.

       4. (D) For the purposes of this paragraph, the term:

          1. (i) “Aggregate effective tax rate” means the sum of the effective rates of tax imposed by the District of Columbia, states, or possessions of the United States, and foreign nations that have entered into comprehensive tax treaties with the United States government, where a related member receiving a payment of interest expense or intangible expense is subject to tax and where the measure of the tax imposed included the payment.

          2. (ii) “Intangible expense” means:

             1. (I) An expense, loss, or cost for, related to, or in connection directly or indirectly with the direct or indirect acquisition, use, maintenance, management, ownership, sale, exchange, or any other disposition of intangible property, to the extent the expense, loss, or cost is allowed as a deduction or cost in determining taxable income for the taxable year under the Internal Revenue Code of 1986;
             2. (II) A loss related to or incurred in connection directly or indirectly with factoring transactions or discounting transactions; or
             3. (III) A royalty, patent, technical, or copyright and licensing fee; or
             4. (IV) Any other similar expense or cost.
          3. (iii) “Intangible property” means patents, patent applications, trade names, trademarks, service marks, copyrights, and similar types of intangible assets.
          4. (iv) “Interest expense” means an amount directly or indirectly allowed as a deduction under section 163 of the Internal Revenue Code for purposes of determining taxable income under the Internal Revenue Code of 1986.

          5. (v) “Related entity” means a person that, under the attribution rules of section 318 of the Internal Revenue Code of 1986, is:

             1. (I) A stockholder who is an individual or a member of the stockholder’s family enumerated in section 318 of the Internal Revenue Code of 1986, if the stockholder and the members of the stockholder’s family own directly, indirectly, beneficially, or constructively, in the aggregate, at least 50% of the value of the taxpayer’s outstanding stock;
             2. (II) A stockholder or a stockholder’s partnership, limited liability company, estate, trust, or corporation, if the stockholder and the stockholder’s partnership, limited liability company, estate, trust, or corporation own directly, indirectly, beneficially, or constructively, in the aggregate, at least 50% of the value of the taxpayer’s outstanding stock; or
             3. (III) A corporation or a party related to the corporation in a manner that would require an attribution of stock from the corporation to the party or from the party to the corporation under the attribution rules of section 318 of the Internal Revenue Code of 1986, if the taxpayer owns directly, indirectly, beneficially, or constructively, at least 50% of the value of the corporation’s outstanding stock.

          6. (vi) “Related member” means:

             1. (I) A person that, with respect to the taxpayer any time during the year, is a related entity;
             2. (II) A component member, as defined in section 1563(b) of the Internal Revenue Code of 1986;
             3. (III) A controlled group of which the taxpayer is also a component; or
             4. (IV) Is a person to or from whom there is attribution of stock ownership in accordance with section 1563(e) of the Internal Revenue Code of 1986.
11. (e) Lower income rental housing depreciation deduction. — [Repealed].

Editor's Notes

Mayor authorized to issue rules: Section 13 of D.C. Law 7-177 provided that the Mayor shall issue rules to implement the provisions of the act.

Mayor authorized to issue regulations: Section 9 of D.C. Law 5-32 provided that the Mayor shall issue regulations necessary to carry out the provisions of the act.

Section 7114 of D.C. Law 17-219 provided that this subtitle shall apply for taxable years beginning after December 31, 2008.

Section 7045 of D.C. Law 17-219 repealed section 3 of D.C. Law 15-330.

References in Text

“This act,” referred to in subsection (d)(6)(A), is 61 Stat. 331.

Section 1563 of the Internal Revenue Code of 1986, referred to in sub-sub-subpars. (II) and (IV) of sub-subpar. (iii) of subpar. (C) of par. (7) of subsec. (b), is classified to 26 U.S.C. § 1563.

Section 318 of the Internal Revenue Code of 1986, referred to in sub-subpar. (ii) of subpar. (C) of par. (7) of subsec. (b), is classified to 26 U.S.C. § 318.

Sections 1361(a) and (b) and 1362(a) of the Internal Revenue Code of 1986, referred to in (b)(5), are codified as 26 U.S.C. §§ 1361(a) and (b) and 1362(a).

Sections 1371 and 1372(a) of the Internal Revenue Code of 1954, referred to in (b)(5), are codified as 26 U.S.C. §§ 1371 and 1372(a).

Section 172 of the Internal Revenue Code of 1986, referred to in (a)(14), is codified as 26 U.S.C. § 172.

The reference in subsection (a)(13) of this section to § 857 (b)(2)(C) of the Internal Revenue Code of 1986 should probably be to § 857 (b)(2)(B) of the Internal Revenue Code of 1986.

Sections 856, 857 and 858 of the Internal Revenue Code of 1954, referred to throughout paragraph (13) of subsection (a) of this section, are classified to 26 U.S.C. §§ 856, 857 and 858.

26 U.S.C. § 852(b)(3)(A), referred to in subsection (a)(12), was amended by P.L. 94-455, § 1901(b)(33)(J)(i) and thereafter did not contain a subparagraph (ii).

Sections 851, 852 and 855 of the Internal Revenue Code of 1954, referred to throughout paragraph (12) of subsection (a) of this section, are classified to 26 U.S.C. §§ 851, 852 and 855.

Section 168(k) of the Internal Revenue Code of 1986, referred to in subsecs. (a)(7) and (b)(6) is codified as 26 U.S.C. § 168(k).

Section 166 of the Internal Revenue Code of 1986, referred to in (a)(5), is codified as 26 U.S.C. § 166.

Section 164 of the Internal Revenue Code of 1986, referred to in (a)(3), is codified as 26 U.S.C. § 164.

Section 163 of the Internal Revenue Code of 1986, referred to in (a)(2), is codified as 26 U.S.C. § 163.

Short Title

Short title of subtitle G of title I of Law 15-205: Section 1061 of D.C. Law 15-205 provided that subtitle G of title I of the act may be cited as the Corporate Income Tax Base Protection Act of 2004.

Short title of subtitle C of title VIII of Law 14-190: Section 831 of D.C. Law 14-190 provided that subtitle C of title VIII of the act may be cited as the Bonus Depreciation De-Coupling from the Internal Revenue Code Act of 2002.

Short title: Section 8011 of D.C. Law 19-21 provided that subtitle B of title VIII of the act may be cited as “Itemized Deduction Limitation Act of 2011”.

Short title: Section 7080 of D.C. Law 18-111 provided that subtitle F of title VII of the act may be cited as the “Interest Expense and Intangible Expense Paid to Related Parties Disallowance Act of 2009”.

Short title: Section 7112 of D.C. Law 17-219 provided that subtitle N of title VII of the act may be cited as the “Decoupling From Domestic Production Activities Act of 2008”.

Short title: Section 7106 of D.C. Law 17-219 provided that subtitle L of title VII of the act may be cited as the “Decoupling from Accelerated Depreciation and Expensing Act of 2008”.

Short title: Section 4011 of D.C. Law 16-192 provided that subtitle B of title IV of the act may be cited as the “Quality Teacher Incentive Act of 2006”.

History

July 16, 1947, 61 Stat. 337, ch. 258, art. I, title III, § 3

May 27, 1949, 63 Stat. 130, ch. 146, title IV, §§ 404-409

Mar. 31, 1956, 70 Stat. 69, ch. 154,§§ 3, 4

Sept. 4, 1957, 71 Stat. 606, Pub. L. 85-281, § 4

Oct. 31, 1969, 83 Stat. 177, Pub. L. 91-106, title VI, § 601(b)(3), (4)

Aug. 28, 1970, 84 Stat. 834, Pub. L. 91-391, § 1

Jan. 5, 1971, 84 Stat. 1933, Pub. L. 91-650, title II, §§ 204, 205(a)

Oct. 21, 1975, D.C. Law 1-23, title VI, § 601(5), (6), 22 DCR 2107

Nov. 1, 1975, D.C. Law 1-31, § 2, 22 DCR 2547

Feb. 3, 1976, D.C. Law 1-44, §§ 2, 3, 23 DCR 4055

June 15, 1976, D.C. Law 1-70, title XI, § 1101, 23 DCR 562

Apr. 19, 1977, D.C. Law 1-124, title IV, § 401(b), 23 DCR 8749

Sept. 23, 1977, D.C. Law 2-19, § 2, 24 DCR 3338

Mar. 6, 1979, D.C. Law 2-158, § 4, 25 DCR 7002

Sept. 13, 1980, D.C. Law 3-92, § 501, 27 DCR 3390

Sept. 13, 1980, D.C. Law 3-95, § 103(b)-(d), 27 DCR 3509

June 11, 1981, D.C. Law 4-7, § 3, 28 DCR 1672

June 11, 1982, D.C. Law 4-118, § 104, 29 DCR 1770

July 24, 1982, D.C. Law 4-131, § 108(a), (b), 29 DCR 2418

Oct. 8, 1983, D.C. Law 5-31, § 10(f), 30 DCR 3879

Oct. 8, 1983, D.C. Law 5-32, § 3(c), 30 DCR 4013

July 24, 1986, D.C. Law 6-129, § 2(b), 33 DCR 3221

June 24, 1987, D.C. Law 7-9, § 2(f), 34 DCR 3283

Oct. 1, 1987, D.C. Law 7-29, §§ 2(c)(5)-(17), 4, 34 DCR 5097

Apr. 30, 1988, D.C. Law 7-104, § 39(a)-(c), 35 DCR 147

July 8, 1988, D.C. Law 7-130, § 2(b), 35 DCR 4104

Sept. 21, 1988, D.C. Law 7-141, § 2(b), 35 DCR 5398

Sept. 21, 1988, D.C. Law 7-145, § 2(b), 35 DCR 5407

Oct. 20, 1988, D.C. Law 7-177, § 10(a), 35 DCR 6158

July 25, 1989, D.C. Law 8-17, § 2(b), 36 DCR 4160

June 11, 1992, D.C. Law 9-114, § 11, 39 DCR 2861

June 14, 1994, D.C. Law 10-128, § 103(b), 41 DCR 2096

Apr. 12, 1997, D.C. Law 11-257, § 5, 44 DCR 1247

Apr. 9, 1997, D.C. Law 11-254, § 2, 44 DCR 1575

Oct. 20, 1999, D.C. Law 13-38, § 2702(g), 46 DCR 6373

Apr. 3, 2001, D.C. Law 13-256, § 404, 48 DCR 730

Oct. 1, 2002, D.C. Law 14-190, § 832(a), 49 DCR 6968

Dec. 7, 2004, D.C. Law 15-205, § 1062(a), 51 DCR 8441

Apr. 12, 2005, D.C. Law 15-330, § 2, 52 DCR 1979

Mar. 2, 2007, D.C. Law 16-191, §§ 4, 109(d), 53 DCR 6794

Mar. 2, 2007, D.C. Law 16-192, § 4012, 53 DCR 6899

Dec. 11, 2007, D.C. Law 17-61, § 2, 54 DCR 10951

Aug. 16, 2008, D.C. Law 17-219, §§ 7107(a), 7113, 55 DCR 7598

Sept. 12, 2008, D.C. Law 17-231, § 41(g), 55 DCR 6758

Mar. 3, 2010, D.C. Law 18-111, § 7081, 57 DCR 181

Sept. 14, 2011, D.C. Law 19-21, § 8012, 58 DCR 6226

Feb. 26, 2015, D.C. Law 20-155, § 7012(c)(3), 61 DCR 9990

Oct. 30, 2018, D.C. Law 22-168, § 7042

Dec. 3, 2020, D.C. Law 23-149

Apr. 27, 2021, D.C. Law 23-280, § 5(a)

Mar. 22, 2023, D.C. Law 24-332, § 7(b)

Feb. 12, 2026, D.C. Law 26-89, § 2(d)

Effective Dates

Section 7082 of D.C. Law 18-111 provided: “Section 7081 shall be effective for taxable years beginning after December 31, 2008.”

Emergency Legislation

For temporary (90 days) amendment of this section, see § 7012(c)(3) of the Fiscal Year 2015 Budget Support Second Congressional Review Emergency Act of 2014 (D.C. Act 20-566, January 9, 2015, 62 DCR 884, 21 STAT 541).

For temporary (90 days) amendment of this section, see § 7012(c)(3) of the Fiscal Year 2015 Budget Support Congressional Review Emergency Act of 2014 (D.C. Act 20-449, October 10, 2014, 61 DCR 10915, 20 STAT 4188).

For temporary (90 days) amendment of this section, see § 7022(c)(3) of the Fiscal Year 2015 Budget Support Emergency Act of 2014 (D.C. Act 20-377, July 14, 2014, 61 DCR 7598, 20 STAT 3696).

For temporary (90 day) amendment of section, see § 5 of Revised Fiscal Year 2012 Budget Support Technical Clarification Emergency Amendment Act of 2011 (D.C. Act 19-157, October 4, 2011, 58 DCR 8688).

For temporary (90 day) amendment of section, see § 7081 of Fiscal Year Budget Support Congressional Review Emergency Amendment Act of 2009 (D.C. Act 18-260, January 4, 2010, 57 DCR 345).

For temporary (90 day) amendment of section, see § 7081 of Fiscal Year 2010 Budget Support Second Emergency Act of 2009 (D.C. Act 18-207, October 15, 2009, 56 DCR 8234).

For temporary (90 day) amendment of section, see §§ 7031, 7032 of Fiscal Year 2010 Budget Support Emergency Act of 2009 (D.C. Act 18-187, August 26, 2009, 56 DCR 7374).

For temporary (90 day) amendment of section, see § 2 of Quality Teacher Initiative Clarification Emergency Act of 2007 (D.C. Act 17-22, March 22, 2007, 54 DCR 2782).

For temporary (90 day) amendment of section, see § 4012 of Fiscal Year 2007 Budget Support Congressional Review Emergency Act of 2007 (D.C. Act 17-1, January 16, 2007, 54 DCR 1165).

For temporary (90 day) amendment of section, see §§ 2, 25(d) of Finance and Revenue Technical Amendments Second Emergency Amendment Act of 2006 (D.C. Act 16-585, December 28, 2006, 54 DCR 340).

For temporary (90 day) amendment of section, see § 4012 of Fiscal Year 2007 Budget Support Congressional Review Emergency Act of 2006 (D.C. Act 16-499, October 23, 2006, 53 DCR 8845).

For temporary (90 day) amendment of section, see § 4012 of Fiscal Year 2007 Budget Support Emergency Act of 2006 (D.C. Act 16-477, August 8, 2006, 53 DCR 7068).

For temporary (90 day) amendment of section, see § 2(f) of Finance and Revenue Technical Amendments Congressional Review Emergency Amendment Act of 2006 (D.C. Act 16-361, April 26, 2006, 53 DCR 3619).

For temporary (90 day) amendment of section, see § 2(f) of Finance and Revenue Technical Amendments Emergency Amendment Act of 2006 (D.C. Act 16-260, January 26, 2006, 53 DCR 780).

For temporary (90 day) amendment of section, see § 2(a) of Depreciation Allowance for Small Business De-Coupling from the Internal Revenue Code Emergency Act of 2005 (D.C. Act 16-240, December 22, 2005, 53 DCR 260).

For temporary (90 day) amendment of section, see § 2(a) of Depreciation Allowance for Small Business De-Coupling for the Internal Revenue Code Congressional Review Emergency Amendment Act of 2005 (D.C. Act 16-59, March 17, 2005, 52 DCR 3193).

For temporary (90 day) amendment of section, see § 2 of Bonus Depreciation De-Coupling Congressional Review Emergency Act of 2005 (D.C. Act 16-27, February 17, 2005, 52 DCR 2987).

For temporary (90 day) amendment of section, see § 2(a) of Depreciation Allowance for Small Business De-Coupling from the Internal Revenue Code Second Emergency Act of 2004 (D.C. Act 15-644, December 29, 2004, 52 DCR 229).

For temporary (90 day) amendment of section, see § 2 of Bonus Depreciation De-Coupling Emergency Act of 2004 (D.C. Act 15-621, November 30, 2004, 51 DCR 11458).

For temporary (90 day) amendment of section, see § 1062(a) of Fiscal Year 2005 Budget Support Congressional Review Emergency Act of 2004 (D.C. Act 15-594, October 26, 2004, 51 DCR 11725).

For temporary (90 day) amendment of section, see § 1062(a) of Fiscal Year 2005 Budget Support Emergency Act of 2004 (D.C. Act 15-486, August 2, 2004, 51 DCR 8236).

For temporary (90 day) amendment of section, see § 2(a) of Depreciation Allowance for Small Business De-Coupling from the Internal Revenue Code Emergency Amendment Act of 2004 (D.C. Act 15-379, February 27, 2004, 51 DCR 2645).

For temporary (90 day) amendment of section, see § 2 of Bonus Depreciation De-Coupling Emergency Act of 2003 (D.C. Act 15-280, December 18, 2003, 51 DCR 78).

For temporary (90 day) amendment of section, see § 2(a) of Bonus Depreciation De-coupling from the Internal Revenue Code Emergency Act of 2002 (D.C. Act 14-341, April 24, 2002, 49 DCR 4291).

For temporary (90 days) amendment of this section, see § 7042 of Fiscal Year 2019 Budget Support Emergency Act of 2018 (D.C. Act 22-434, July 30, 2018, 65 DCR 8200).

For temporary (90 days) amendment of this section, see § 7042 of Fiscal Year 2019 Budget Support Congressional Review Emergency Act of 2018 (D.C. Act 22-458, Oct. 3, 2018, 65 DCR 11212).

For temporary (90 days) amendment of this section, see § 207(c) of Coronavirus Support Emergency Amendment Act of 2020 (D.C. Act 23-326, May 27, 2020, 67 DCR 7045).

For temporary (90 days) amendment of this section, see § 207(c) of Coronavirus Support Congressional Review Emergency Amendment Act of 2020 (D.C. Act 23-328, June 8, 2020, 67 DCR 7598).

For temporary (90 days) amendment of this section, see § 207(c) of Coronavirus Support Second Congressional Review Emergency Amendment Act of 2020 (D.C. Act 23-405, Aug. 19, 2020, 67 DCR 10235).

For temporary (90 days) amendment of this section, see § 2 of Capital Gains Deduction Clarification Emergency Amendment Act of 2020 (D.C. Act 23-517, Dec. 7, 2020, 67 DCR 14425).

For temporary (90 days) amendment of this section, see § 207(b) of Coronavirus Support Emergency Amendment Act of 2021 (D.C. Act 24-30, Mar. 17, 2021, 68 DCR 003101).

For temporary (90 days) amendment of this section, see § 2 of Capital Gains Deduction Clarification Congressional Review Emergency Amendment Act of 2021 (D.C. Act 24-45, Mar. 24, 2021, 68 DCR 003454).

For temporary (90 days) amendment of this section, see § 207(b) of Coronavirus Support Congressional Review Emergency Amendment Act of 2021 (D.C. Act 24-96, June 7, 2021, 68 DCR 006025).

For temporary (90 days) amendment of this section, see § 2 of Capital Gains Deduction Clarification Emergency Amendment Act of 2021 (D.C. Act 24-246, Dec. 22, 2021, 68 DCR 014054).

For temporary (90 days) amendment of this section, see § 2(d) of D.C. Income and Franchise Tax Conformity and Revision Emergency Amendment Act of 2025 (D.C. Act 26-214, Dec. 3, 2025, 72 DCR 13684).

Temporary Legislation

Section 15(b) of D.C. Law 19-53 provided that the act shall expire after 225 days of its having taken effect.

“(5) This subsection shall apply for tax years beginning after December 31, 2010.”

Section 5 of D.C. Law 19-53 added (b-4)(5) to read as follows:

Section 5(b) of D.C. Law 17-7 provided that the act shall expire after 225 days of its having taken effect.

Section 3 of D.C. Law 17-7 provided that Section 2 shall apply as of January 1, 2006.

“(2) The deductions under paragraphs (1)(A) and (B) of this subsection shall not be allowed to the extent the same expenses were claimed by the individual in computing federal adjusted gross income for the same taxable year under the Internal Revenue Code of 1986.”

“(B) The amount the individual paid during the year as tuition and fees for post-graduate education, professional development, or state licensing examination and testing required for or related to improving teacher credentials or maintaining professional certification; provided, that the deduction shall not exceed $1,500 per year, per individual, whether the individual files individually or jointly.

“(A) The amount the individual paid during the year for basic classroom materials and supplies necessary for teaching; provided, that the deduction shall not exceed $500 per year, per individual, whether the individual files individually or jointly; and

“(b-2)(1) An individual who has been a classroom teacher in a public school or public charter school in the District of Columbia for the entire year for which the individual is filing or for the entire year prior to the year for which the individual is filing and is approved for teaching by the District of Columbia Public Schools may deduct from gross income:

Section 2 of D.C. Law 17-7 amended subsec. (b-2) to read as follows:

Section 11(b) of D.C. Law 16-102 provided that the act shall expire after 225 days of its having taken effect.

“(vi) ‘Valid business purpose’ means one or more business purposes, other than the avoidance or reduction of taxation, which, alone or in combination, constitute the primary motivation for some business activity or transaction, which activity or transaction changes in a meaningful way, apart from tax effects, the economic position of the taxpayer.”

“(v) ‘State’ shall include the District of Columbia.

“(iv) ‘Royalty payments’ mean payments directly connected to the use, maintenance, or management of licenses, trademarks, copyrights, trade names, trade dress, service marks, mask works, trade secrets, patents, and any other similar types of intangible assets as are set forth in regulations promulgated by the Chief Financial Officer, including amounts allowable as interest deductions under § 47-1803.02(a)(2), to the extent that such amounts are directly or indirectly for, related to, or in connection with the use, maintenance, or management of such intangible assets.

“(IV) Is a person to or from whom there is attribution of stock ownership in accordance with section 1563(e) of the Internal Revenue Code of 1986.

“(III) A controlled group of which the taxpayer is also a component; or

“(II) A component member, as defined in section 1563(b) of the Internal Revenue Code of 1986;

“(I) A person that, with respect to the taxpayer any time during the taxable year, is a related entity;

“(iii) ‘Related member’ means:

“(ii) ’Related entity’ means (I) a stockholder who is an individual, or a member of the stockholder’s family enumerated in section 318 of the Internal Revenue Code of 1986, if the stockholder and the members of the stockholder’s family own, directly, indirectly, beneficially or constructively, in the aggregate, at least 50% of the value of the taxpayer’s outstanding stock; (II) a stockholder, or a stockholder’s partnership, limited liability company, estate, trust, or corporation, if the stockholder and the stockholder’s partnerships, limited liability companies, estates, trusts, and corporations own directly, indirectly, beneficially or constructively, in the aggregate, at least 50% of the value of the taxpayer’s outstanding stock; or (III) a corporation, or a party related to the corporation in a manner that would require an attribution of stock from the corporation to the party or from the party to the corporation under the attribution rules of section 318 of the Internal Revenue Code of 1986, if the taxpayer owns, directly, indirectly, beneficially or constructively, at least 50% of the value of the corporation’s outstanding stock. The attribution rules of section 318 of the Internal Revenue Code of 1986 shall apply for purposes of determining whether the ownership requirements of this paragraph have been met.

“(II) In the case of a partnership, association, trust or other entity, more than 50% of the capital, profits, or beneficial interest in the partnership, association, trust or other entity.

“(I) In the case of a corporation, more than 50% of the total combined voting power of all classes of stock of the corporation, or more than 50% of the capital, profits, or beneficial interest in the voting stock of the corporation; or

“(i) ‘Majority interest’ means:

“(C) For the purposes of this paragraph, the term:

“(iv) The related member receiving the royalty payments is subject to a tax measured by its net income or receipts in a state or possession of the United States imposing a statutory tax rate of at least 4.5%; provided, that a related member receiving the royalty payment shall not be considered to be subject to a tax merely by virtue of the related member’s inclusion in a combined or consolidated return in one or more states.

“(iii) The royalty payments are paid or incurred to a related member organized under the laws of a country other than the United States, and the country has entered into a comprehensive income tax treaty with the United States; or

“(ii) The related member receiving the royalty payments acquired the intangible assets for which royalty payments are being made from a person or entity that was not a related member, the transaction was done for a valid business purpose, and the royalty payments are made at arm’s length;

“(i) The related member during the same taxable year directly or indirectly paid, received, accrued, or incurred the amount of the obligation to or from a person or entity that is not a related member, and the transaction was done for a valid business purpose and the payments are made at arm’s length;

“(B) The disallowance of the deduction under subparagraph (A) of this paragraph shall not apply if and to the extent that the payments satisfy any of the following conditions:

“(A) Royalty payments, if the royalty payments are directly or indirectly paid, accrued, or incurred to a related member during the taxable year and deductible in calculating federal taxable income.

“(19) Royalty payments. —

Section 2(f) of D.C. Law 16-102 repealed par. (b)(7); and added par. (a)(19) to read as follows:

Section 4(b) of D.C. Law 15-322 provided that the act shall expire after 225 days of its having taken effect.

Section 2(a) of D.C. Law 15-322, in subsecs. (a)(7) and (b)(6), substituted “September 30, 2005” for “September 11, 2004” and added new sentences at the end to read as follows: “No deduction shall be allowed for the increased expensing for small businesses and subject to the special rules pursuant to section 179 of the Internal Revenue Code of 1986. No expensing of computer software shall be allowed. No increase shall be allowed in Qualifying Investment at which phaseout begins.”

Section 4(b) of D.C. Law 15-316 provided that the act shall expire after 225 days of its having taken effect.

Section 2 of D.C. Law 15-316, in subsecs. (a)(7) and (b)(6), substituted “December 31, 2005” for “September 11, 2004”.

For temporary (225 day) amendment of section, see § 2(a) of Depreciation Allowance for Small Business De-Coupling From the Internal Revenue Code Temporary Act of 2004 (D.C. Law 15-160, May 18, 2004, law notification 51 DCR 5700).

For temporary (225 day) amendment of section, see § 2 of Bonus Depreciation De-Coupling Temporary of 2004 (D.C. Law 15-118, March 30, 2004, law notification 51 DCR 3805).

For temporary (225 day) amendment of section, see § 2(a) of Bonus Depreciation De-Coupling From the Internal Revenue Code Temporary Act of 2002 (D.C. Law 14-175, July 23, 2002, law notification 49 DCR 8269).

For temporary (225 days) amendment of this section, see § 207(c) of Coronavirus Support Temporary Amendment Act of 2020 (D.C. Law 23-130, Oct. 9, 2020, 67 DCR 8622).

For temporary (225 days) amendment of this section, see § 2 of Capital Gains Deduction Clarification Temporary Amendment Act of 2020 (D.C. Law 23-261, Mar. 16, 2021, 68 DCR 00003).

For temporary (225 days) amendment of this section, see § 207(b) of Coronavirus Support Temporary Amendment Act of 2021 (D.C. Law 24-9, June 24, 2021, 68 DCR 004824).

For temporary (225 days) amendment of this section, see § 2 of Capital Gains Deduction Clarification Temporary Act of 2021 (D.C. Law 24-88, Mar. 2, 2022, 69 DCR 000430).

For temporary (225 days) amendment of this section, see § 2(d) of D.C. Income and Franchise Tax Conformity and Revision Temporary Amendment Act of 2025 (D.C. Law 26-89, Feb. 12, 2026, 73 DCR 9).

Effect of Amendments

The 2015 amendment by D.C. Law 20-155 added “For taxable years beginning before January 1, 2015” in (b-1).

D.C. Law 19-21 added subsec. (b-4).

D.C. Law 18-111 repealed subsec. (a)(19); and added subsec. (d)(7).

D.C. Law 17-231, in subsec. (c), rewrote the last sentence, which had read as follows: “If a husband and wife file separate returns, the applicable standard deduction shall be allowed to neither if the net income of one of the spouses is determined by itemizing deductions.”

D.C. Law 17-219 rewrote subsecs. (a)(7), (18); added subsecs. (a-1), (b)(8), and (b-3); and repealed subsec. (b)(6).

D.C. Law 17-61 rewrote subsec. (b-2).

D.C. Law 16-192 added subsec. (b-2).

D.C. Law 16-191, added subsec. (a)(19); in subsec. (b-1), substituted “long-term care insurance” for “long term-health care insurance”; and repealed subsec. (b)(7).

D.C. Law 15-330 added subsec. (b-1).

D.C. Law 15-205, in subsec. (b), made nonsubstantive changes in pars. (5) and (6), and added par. (7).

D.C. Law 14-190, in subsec. (a)(7), inserted the second sentence; and, in subsec. (b), substituted “deductions allowed under this section shall be the same (and to the same extent)” for “deductions allowed under this section shall be the same”, made a nonsubstantive change in par. (5), and added par. (6).

D.C. Law 13-256 added subsec. (a)(18).

D.C. Law 13-38 rewrote subsec. (a)(14) adding all material following the introductory paragraph and deleting a provision stating that no operating loss be carried back to any year ending before January 1, 1988.

Prior Codifications

1973 Ed., § 47-1557b.

1981 Ed., § 47-1803.3.

Section References

This section is referenced in § 1-1163.10a, § 1-1163.18, § 42-204, § 47-1809.08, and § 47-1811.04.

Cross References

Election campaigns, organizations authorized to receive unexpended campaign funds, see § 1-1107.02.

Applicability

Section 7043 of D.C. Law 22-168 provided that the amendment made to this section by section 7042 of D.C. Law 22-168 shall apply as of January 1, 2018.

Applicability of D.C. Law 24-332: § 9 of D.C. Law 24-332 provided that the change made to this section by § 7(b) of D.C. Law 24-332 is subject to the inclusion of the law’s fiscal effect in an approved budget and financial plan. Therefore that amendment has not been implemented.