The ordinary refund window is three years from filing or two years from payment. Congress recognized that some items cannot be known that quickly. A debt may not prove worthless for years. A foreign tax may be finally determined long after the U.S. return is filed. A loss in a later year may reach back to an earlier one.
Section 6511(d) of the Internal Revenue Code creates longer windows for those items. This guide covers the main ones, how each is measured and how they also lift the lookback cap for the related refund.
Seven years for bad debts and worthless securities
Section 6511(d)(1) applies when a claim relates to an overpayment of income tax on account of the deductibility of a debt as a debt that became worthless under section 166 or section 832(c), or of a loss from worthlessness of a security under section 165(g), or the effect that deduction has on a carryover. In place of the 3-year period, the period is 7 years from the date prescribed by law for filing the return for the year for which the claim is made.
If the claim relates to the effect of such a deduction on a carryback, the period is either 7 years from the due date of the return for the year of the net operating loss that results in the carryback or the carryback period in section 6511(d)(2), whichever expires later.
The reason is practical. The year a debt or security becomes worthless is often unclear when it happens. A taxpayer who picks the wrong year needs time to fix it, and seven years provides room.
Note the measuring point: the due date of the return, not the filing date. The guide on deemed payment dates explains why due dates often control refund questions.
Carrybacks of losses and credits
Section 6511(d)(2)(A) applies when a claim relates to an overpayment attributable to a net operating loss carryback or a capital loss carryback. In place of the 3-year period, the period ends 3 years after the time prescribed by law for filing the return, including extensions, for the taxable year of the loss that results in the carryback, or the period under section 6511(c) for that year, whichever expires later.
Section 6511(d)(4) applies a similar rule to overpayments attributable to a credit carryback, which the statute defines as any business carryback under section 39. The period ends 3 years after the due date, including extensions, of the return for the year of the unused credit, with a special rule when the credit carryback itself results from a later loss or credit carryback.
The logic is that the refund for the earlier year depends on the later year. So the clock is measured from the later year's return.
Whether a particular loss or credit can be carried back at all is a substantive question that depends on the Code provision and tax year involved. This guide covers only the timing if a carryback applies.
Ten years for foreign tax credits
Section 6511(d)(3)(A) applies when a claim relates to an overpayment attributable to taxes paid or accrued to a foreign country or U.S. possession for which a credit is allowed under section 901 or a treaty. In place of the 3-year period, the period is 10 years from the date prescribed by law for filing the return for the year in which the taxes were actually paid or accrued.
The statutory notes show that the phrase for the year in which such taxes were actually paid or accrued was substituted in 1997, applicable to taxes paid or accrued in taxable years beginning after August 5, 1997. The period is measured from the year the foreign tax was actually paid or accrued, which may differ from the year to which the credit relates.
Foreign tax determinations can take years to finalize, and credits can move between years. Ten years gives room for that.
The lookback cap is lifted for these items
Each of these special periods also addresses the amount limit. The ordinary rule in section 6511(b)(2) caps a refund at tax paid within the lookback window before the claim, as explained in the guide to the refund lookback limits.
For bad debts and worthless securities, section 6511(d)(1) says the refund may exceed the amount paid within the normal lookback to the extent of the overpayment attributable to those items. Sections 6511(d)(2)(A), (d)(3)(B) and (d)(4)(A) contain parallel language for loss carrybacks, foreign tax credits and credit carrybacks.
So the longer window is not an empty promise. The portion of the refund that comes from the special item is not limited by the ordinary cap.
Other special periods
- Self-employment tax and state employee coverage agreements, under section 6511(d)(5).
- Recapture under certain qualified plan terminations, under section 6511(d)(6), which extends the period until one year after the recaptured amount is paid.
- Self-employment tax attributable to certain Tax Court employment status determinations, under section 6511(d)(7).
- Uniformed services retired pay reduced because of a disability compensation award, under section 6511(d)(8), which extends the 3-year period until one year after the Department of Veterans Affairs determination, for taxable years that began no more than five years before the determination.
Each is narrow. If your situation fits one, it can be the difference between a barred claim and a timely one.
An illustration
Suppose an individual owned stock in a company that collapsed. The individual believed the stock became worthless in one year, but did not claim the loss, and only later concluded the stock was worthless in an earlier year that is now more than three years past its filing date. Under the ordinary rule, a refund claim for the earlier year would be too late.
Section 6511(d)(1) changes the answer for the part of the refund attributable to the worthless security loss. The claim period for that item is seven years from the due date of the return for the earlier year. If the claim is filed within that window, the loss can be claimed for the correct year, and the refund attributable to it is not limited by the ordinary lookback cap.
The illustration is about the timing rule only. Whether and when a security became worthless is a factual question that must be supported in the claim.
How to use the longer windows
First, identify the item precisely. The special periods apply only to the overpayment attributable to the listed item. A claim that mixes a bad debt deduction with unrelated adjustments may be timely for the first and late for the rest.
Second, measure from the right date: the return due date for bad debts and foreign taxes, and the loss or credit year's return due date, including extensions, for carrybacks.
Third, state the ground. Treasury Regulation 301.6402-2(b)(1) requires each ground to be set out in detail. A claim for a worthless security loss should identify the security, the facts showing worthlessness and the year.
Fourth, do not rely on the special period for items it does not cover. Everything else on the return is subject to the ordinary refund claim deadline.
The bottom line
IRC 6511(d) gives 7 years from the return due date for refunds attributable to bad debts and worthless securities, 10 years from the return due date for the year foreign taxes were actually paid or accrued and carryback-based periods tied to the loss or credit year's return. For each, the refund attributable to the item can exceed the ordinary lookback cap. These rules are generous, but only for the items they name.