1. (a) An entity that is required to file either an Oklahoma partnership income tax return or an Oklahoma Subchapter S corporate income tax return may elect to pay income tax at the entity level, effective for tax year 2019 and subsequent tax years. [68 O.S. § 2355.IP-1 et seq.]
2. (b) The election to pay income tax at the entity level may be made either by filing OTC Form 586 as a stand-alone form or by filing OTC Form 586 with the pass-through entity's (PTE) income tax return. The Tax Commission will send an acknowledgement letter to each PTE that files a pass-through entity election. Each electing PTE must provide its shareholders, partners, or members, with a copy of the Tax Commission acknowledgment letter.
3. (1) Election made by filing OTC Form 586 as a stand-alone form. A PTE election may be made by a qualifying PTE at any time during the preceding tax year or two (2) months and fifteen (15) days after the beginning of the current tax year by filing OTC Form 586 as a stand-alone form. Each year, the shareholder, partner, or member of the electing PTE must include a copy of the Tax Commission acknowledgement letter with the Oklahoma income tax return of the shareholder, partner or member.
4. (2) Election made on the qualifying PTE's Oklahoma income tax return. Beginning with tax year 2024, an election may be made by a qualifying PTE on the Oklahoma income tax return of the qualifying PTE prior to but not later than the due date of the applicable income tax return, including any extension. Each qualifying PTE making the election on their Oklahoma income tax return must include OTC Form 586 with the return. For the tax year the election is made, the shareholder, partner or member of the electing PTE must include a copy of OTC Form 586 of the electing PTE which has been signed by a partner, member, or corporate officer who is authorized to sign and file the electing PTE income tax return. Returns of shareholders, partners or members filed in subsequent years must include a copy of the Tax Commission acknowledgement letter.
5. (c) For income distributed to estates, trusts or individuals, electing entities are taxed at the highest marginal individual income tax rate. For income distributed to corporations, electing entities are taxed at the corporate income tax rate. [68 O.S. § 2355]
6. (d) Oklahoma income or losses the electing PTE included in computing its tax will not be used to calculate the Oklahoma taxable income of the partners, members or shareholders of the electing entity.
7. (e) For tax years beginning on or after January 1, 2020, estimated tax payments shall be required of an electing PTE as provided in 68 O.S. § 2385.9.

8. (f) A PTE election is binding until revoked by the electing PTE or by the Oklahoma Tax Commission.

   1. (1) An electing PTE may revoke the election by filing OTC Form 586. The effective date of a PTE's revocation of an election made within two (2) months and fifteen (15) days of the electing PTE's taxable year shall be the first day of such taxable year. If the revocation is made after this time period, the revocation is effective on the first day of the following taxable year.
   2. (2) If the amount of tax required to be paid by an electing PTE is not paid when due, the Oklahoma Tax Commission may, in its discretion, revoke the PTE's election effective for the first year for which the tax is not paid.

Added at 38 Ok Reg 1527, eff 9-1-21

Amended at 42 Ok Reg, Number 20, effective 7-15-25