*73 Per Curiam.
Respondent appeals as of right from an order of the Michigan Tax Tribunal that required it to refund to petitioner state income taxes paid on federal pension benefits for tax years 1985 through 1987. Petitioner has cross appealed and argues that respondent was required to refund all state income taxes paid on the pension benefits regardless of any statute of limitations. We have been advised by the parties and the Tax Tribunal that more than three thousand cases pending before the tribunal are being held in abeyance pending the final resolution of this case. We have been further advised that a class-action suit in the Court of Claims, brought on behalf of Michigan residents who are federal pensioners, has been similarly stayed. The class-action plaintiffs appear in this case as amici curiae.
On March 28, 1989, the United States Supreme Court decided the case of
Davis
v
Michigan Dep’t of
Treasury,
In the present case, petitioner’s decedent, a federal retiree, had paid state income taxes from 1982 through 1987 on his federal pension benefits pursuant to the now invalid § 30(l)(f). After the Supreme Court decided Davis, petitioner filed amended income tax returns with respondent and requested a refund for taxes paid from 1982 through 1987. Respondent denied the request on the ground that petitioner had not filed a timely claim for a refund pursuant to §27a(6) of the revenue act, MCL 205.27a(6); MSA 7.657(27a)(6), which provided:
Notwithstanding the provisions of subsection (2) [which provides for a four-year period after the date a return is to be filed in which to claim a refund], a claim for refund based upon the validity of a tax law based on the laws or constitution of the United States or the state constitution of 1963 shall not be paid unless the claim is filed within 90 days after the date set for filing a return or when ordered pursuant to an appeal under section 22. [Since amended by1990 PA 285 , effective December 21, 1990.]
The issue, as formulated by the Tax Tribunal, was: When should federal retirees be entitled to receive refunds for the income tax paid under the unconstitutional statute? Three options were presented: (1) all federal retirees who had ever paid income taxes pursuant to § 30(l)(f) are entitled to refunds irrespective of any statute of limitations because § 30(l)(f) was void ab initio; (2) refunds are available to federal retirees who claim them within four years of the due date for filing of a *75 return pursuant to § 441 of the Income Tax Act, MCL 206.441; MSA 7.557(1441); or (3) only retirees who file claims within ninety days after the due date of a return are entitled to refunds pursuant to § 27a(6) of the revenue act, MCL 205.27a(6); MSA 7.657(27a)(6). The tribunal believed that it did not have to determine the retroactivity of Davis, because the United States Supreme Court had stated in other opinions that remedial issues are purely questions of state law. After rejecting the first option described above, the tribunal held that the ninety-day period of MCL 205.27a(6); MSA 7.657(27a)(6) was in conflict with the four-year limitation period of MCL 206.441; MSA 7.557(1441) and, under the conflict resolution section of the Income Tax Act, MCL 206.402; MSA 7.557(1402), the four-year period prevailed. Respondent has appealed from that decision, and petitioner has cross appealed, again arguing that the refunds may be claimed irrespective of any limitation period.
Contrary to the position taken by the Tax Tribunal, we believe that we must decide whether the decision in
Davis
applies retroactively. Retroactive application of a decision and the appropriate remedy are separate issues.
American Trucking Ass’ns, Inc v Smith,
495 US —;
Since the date of the Tax Tribunal’s decision, action taken by the Legislature has rendered moot many of the issues presented to us.
Subsection (6) does not apply to a claim for the refund of a tax paid for the 1984 tax year or a tax year after the 1984 tax year on income received as retirement or pension benefits from a public retirement system of the United States government if the claimant waives any claim for the refund of such a tax paid for a tax year before 1984.
Subsection 7 sets forth a schedule by which
*77
refunds for tax years 1984 through 1988 are to be made in installments over a four-year period from July 1, 1990, through July 1, 1993. At the same time subsection 7 was enacted,
Because the facts of this case are stipulated and the question presented is one of law, we have no difficulty in reviewing the issue on appeal, despite the Tax Tribunal’s inability to consider it. See, e.g., Allstate, supra. We conclude that subsection 7 *78 operates retroactively. This resolution renders moot the bulk of the issues presented to the Tax Tribunal, including several constitutional arguments against the validity of § 27a(6).
Nonetheless, several issues remain to be decided. Petitioner raises several arguments on cross appeal to the effect that no limitation period may be applied to § 30(l)(f) refund claims. Petitioner first argues that § 30(l)(f) was void ab initio and that no statute of limitations may be applied to limit recovery. We disagree. As the Tax Tribunal put it, "The lacuna in Petitioner’s logic is that to declare a tax statute void as if it was never enacted still does not determine the appropriate remedy; i.e., whether the tax refund statutes are to be completely ignored (as Petitioner now urges) or applied (as Respondent contends) to taxpayers injured by the voided provision.” A new rule that is to be applied retroactively must still be limited by the need for finality and may be limited by the application of a statute of limitations.
Beam,
501 US —;
In conclusion, the decision of the Tax Tribunal that MCL 206.441; MSA 7.557(1441) was the controlling limitation period for § 30(l)(f) refund claims is no longer valid in light of the passage of
Reversed and remanded.
