Federal National Mortgage Association (“FNMA”) filed this tax refund action to recover overpayment interest, invoking a statutory “Special Rule” that permits taxpayers to request retroactive application of an Internal Revenue Code provision requiring the Internal Revenue Service (“IRS”) to apply a zero net interest rate to overlapping periods of mutual taxpayer and IRS indebtedness. On the parties’ cross-motions for partial summary judgment, the United States Court of Federal Claims held that FNMA was entitled to the interest it claimed.
Fed. Nat’l Mortgage Ass’n v. United States,
BACKGROUND
Formerly a federal government agency, FNMA is a private, for-profit entity that provides liquidity for mortgage investments. FNMA had a series of tax disputes with the government during the 1980s and early 1990s. One such dispute was resolved in 1994 by the Tax Court, which determined that FNMA had overpaid its 1974 income taxes by $81,760,551 and its 1975 income taxes by $51,691,622. Fed. Nat’l Mortgage Ass’n v. Commissioner, No. 21557-86 (T.C. Feb. 23, 1994). The IRS refunded the amounts overpaid, together with overpayment interest, in several installments between August 1994 and November 1996.
Meanwhile, in 1990 and 1992, respectively, FNMA made tax and deficiency interest payments to the IRS as a consequence of income tax underpayments for the 1983 and 1986 tax years. The periods during which the IRS owed FNMA refunds of overpaid tax (for 1974 and 1975) plus overpayment interest overlapped with the periods during which FNMA owed the IRS for the 1983 and 1986 deficiencies. During the periods of overlap, FNMA owed no net tax. A net liability for FNMA arose for each overlap period, 1 nonetheless, because the IRS charges taxpayers a higher interest rate on underpayments than it pays in overpayment interest.
*1306 Section 6621(d) of the Internal Revenue Code was enacted in 1998 as part of the IRS Restructuring and Reform Act of 1998 (“the RRA”), Pub. L. No. 105-206, 112 Stat. 685 (codified at 26 U.S.C. § 6621(d)). It requires the IRS to apply a zero net interest rate to overlapping periods of mutual indebtedness between a taxpayer and the IRS, as follows:
Elimination of interest on overlapping periods of tax overpayments and underpayments. — To the extent that, for any period, interest is payable under sub-chapter A and allowable under subchapter B on equivalent underpayments and overpayments by the same taxpayer of tax imposed by this title, the net rate of interest under this section on such amounts shall be zero for such period.
26 U.S.C. § 6621(d) (2000). 2 This provision applies to interest accrued after the RRA’s July 22, 1998 date of enactment. However, the RRA’s uncodified special rule allows taxpayers to request that a zero net interest rate be applied to pre-July 22, 1998 periods of overlapping mutual indebtedness in some circumstances:
Special Rule. — Subject to any applicable statute of limitation not having expired with regard to either a tax underpayment or a tax overpayment, the amendments made by this section shall apply to interest for periods beginning before the date of the enactment of this Act if the taxpayer—
(A) reasonably identifies and establishes periods of such tax overpayments and underpayments for which the zero rate applies; and
(B) not later than December 31, 1999, requests the Secretary of the Treasury to apply section 6621(d) of the Internal Revenue Code of 1986 ... to such periods.
Pub. L. No. § 105-206, 3301(c)(2), 112 Stat. 685, 741 (1998),
amended by
Pub.L. No. 105-277, § 4002(d), 112 Stat. 2681, 2681-906 (1998). FNMA filed an administrative claim with the IRS pursuant to section 6621(d) and the special rule for the application of a zero net interest rate to the overlapping periods at issue here in December 1999. The IRS disallowed FNMA’s claim on June 7, 2000.
3
It cited its Revenue Procedure 99-43, which interprets the special rule as requiring that “both periods of limitation applicable to the tax underpayment and to the tax overpayment ... must have been open on July 22, 1998.” Rev. Proc. 99-43, 1999-
FNMA then filed the present refund action pursuant to 28 U.S.C. § 2411. The parties premised their cross-motions for partial summary judgment on their differing interpretations of the “[sjubject to any applicable statute of limitation not having expired with regard to either a tax underpayment or a tax overpayment” condition in the special rule. 5 FNMA argued that *1307 retroactive application of section 6621(d) via the special rule is available where the limitations period for either the overpayment period or the underpayment period had not expired as of July 22, 1998. The government argued that the special rale authorizes interest netting for pre-July 22, 1998 periods only if both limitations periods had not expired.
In a very careful and thorough opinion, the Court of Federal Claims granted summary judgment in favor of FNMA, holding that “the special rule applies as long as at least one of the applicable statutes of limitations remains open.”
Fed. Nat’l Mortgage,
This appeal followed. We have jurisdiction pursuant to 28 U.S.C. § 1295(a)(3).
DISCUSSION
‘We review the Court of Federal Claims’ grant of summary judgment without deference.”
Agwiak v. United States,
I.
As the Court of Federal Claims noted, statutory interpretation begins with the language of the statute.
Duncan v. Walker,
We further agree that Revenue Procedure 99-43 is not entitled to
Chevron
deference. The Court of Federal Claims correctly noted that an agency pronouncement not promulgated pursuant to an explicit or implicit congressional delegation of law-making authority is not entitled to deference under
Chevron. Fed. Nat’l Mortgage,
The government notes that we have left undecided the question of whether revenue rulings are “entitled to
Chevron
deference in accordance with”
Mead. Am. Mut. Life Ins. Co. v. United States,
Mead
reaffirmed, however, that, even where
Chevron
is inapplicable, an agency pronouncement “may merit some deference whatever its form, given the ‘specialized experience and broader investigations and information’ available to the agency.”
Id.
(quoting
Skidmore,
As noted above, however, Revenue Procedure 99-43 sets forth no reasoning in support of its conclusion regarding the introductory language of the special rule. Furthermore, as a “recent pronouncement implementing a new statute with no precedent in the tax laws,”
Fed. Nat’l Mortgage,
II.
We find limited guidance in the legislative history. The original bill (H.R. 2676) authorized interest netting for overlapping overpayment and underpayment periods on a prospective basis only. See H.R.Rep. No. 105-364(I), at 21 (1997). The special rule authorizing interest netting for past periods was added by a Senate floor amendment that was accepted without modification by the Conference Committee. The Conference Report does little more than restate the special rule, in equally ambiguous terms. In relevant part, it states: “the [interest netting] provision applies to interest for periods beginning before the date of enactment if ... the statute of limitations has not expired with respect to either the underpayment or overpayment-....” H.R. Conf. Rep. No. 105-599, at 257 (1998). Thus, we agree with the Court of Federal Claims that the language of the Conference Report is equally susceptible to either of the interpretations advanced by the parties.
The government urges, however, that we look for insight into the intent of Congress in the General Explanation of Tax Legislation Enacted in 1998, prepared by the Joint Committee on Taxation, November 24, 1998 (the “Blue Book”). According to the Blue Book explanation relevant to the special rule:
[t]he provision affects the determination of interest for periods beginning after the date of enactment (after July 22, 1998). In addition, the provision applies to the determination of interest for periods beginning before the date of enactment if: (1) as of the date of enactment, a statute of limitations has not expired with respect to the underpayment or overpayment; (2) the taxpayer identifies the periods of underpayment and overpayment for which the zero rate applies; and (3) on or before December 31, 1999, the taxpayer asks the Secretary to apply the zero rate. A statute of limitations must not have expired as of the date of enactment with respect to both the underpayment and overpayment for the provision to apply.
(emphasis added). As a post-enactment explanation, the Blue Book interpretation is entitled to little weight.
Jones v. United States,
*1310 III.
As discussed above, the Court of Federal Claims relied on certain principles of statutory construction to choose between the parties’ conflicting interpretations of the special rule. It did not discuss, however, what we regard as the most significant construction principle applicable to the present dispute: the requirement that a sovereign immunity waiver be strictly construed.
7
See Library of Congress v. Shaw,
The issue here concerns the limits of the condition set forth in the special rule’s preface: the requirement that certain periods of limitations be open as of July 22, 1998. Such time bars, when they condition recovery from the government, are strictly construed.
See United States v. Dalm,
Here, the implication of these principles is clear. As discussed above, the language at issue is ambiguous, subject to two conflicting interpretations. A waiver to the extent urged by FNMA, i.e., as to claims for overlapping indebtedness periods for which either the overpayment or the underpayment limitations period remains open, has, therefore, not been “unequivocally expressed,” as is essential to its recovery here.
United States v. King,
REVERSED AND REMANDED.
COSTS
Nó costs.
Notes
. A net liability of approximately $4,940,328 arose during the overlap of the 1983 underpayments and the 1974 overpayments. A net liability of approximately $5,588,173 arose during the overlap of the 1986 underpayments and the 1974 and 1975 overpayments.
. Subchapters A and B of the Internal Revenue Code relate to interest on underpayments and overpayments of tax, respectively. See 26 U.S.C. §§ 6601, 6611.
. The IRS issued a corrected notice of disallowance on July 20, 2000.
. A claim for credit or refund of paid underpayment interest is barred if not filed within the later of three years from the date the return was filed or two years from the date the interest was paid. 26 U.S.C. § 6511.
. According to the trial court, FNMA disputed the government’s conclusion that the statute of limitations for the 1983 underpayment year was closed on July 22, 1998.
Fed. Nat’l Mortgage,
. The IRS requested comments
regarding the level of specificity necessary to reasonably identify and establish on or before December 31, 1999, the period(s) for which an equivalent amount of overpayment and underpayment of tax overlap when the taxpayer cannot provide by December 31, 1999, a final computation of how the net interest rate of zero applies to interest accruing before October 1, 1998.
Rev. Proc. 99-19, 1999-
. The government did not include a sovereign immunity argument in its motion papers. Nonetheless, because sovereign immunity, to the extent applicable, limits a court's authority to grant relief or even adjudicate, we are obliged to consider its applicability.
. Because it affects such jurisdiction here, sovereign immunity assumes primacy over any other tools or principles of statutory construction and obviates the need for further consideration of the bases for the decision of the Court of Federal Claims.
See Marathon Oil Co. v. United States,
