Lenora Hamilton thought she had everything figured out. She filed her 2017 tax return in November 2021—late, but still claiming a $2,070 refund she believed was rightfully hers. The IRS immediately rejected her claim. She appealed, lost, and spent nearly a year fighting in federal court.
The final verdict in early 2025 delivered a crushing blow: the court ruled her claim was “timely filed,” but she couldn’t recover a single dollar. Not because the refund was wrong, but because she missed something called the “lookback period.” A technical timing rule had permanently erased her entire refund.
In a recent episode of the Tax in Action podcast, host Jeremy Wells used Hamilton’s story to explain the refund statute of limitations—a subject most tax professionals think they understand but actually don’t. The stakes are enormous: once these deadlines pass, Wells warns, “there’s virtually no going back.”
The Two-Step Framework That Trips Up Even Experienced Practitioners
Most tax professionals think the refund statute of limitations is straightforward. File within three years, get your refund. But Wells explains it’s a complex two-step process where each step has different rules and different consequences.
Step One: Can You File at All?
The first step determines whether you can file a refund claim. This “limitation period” is the later of either three years after the return was filed or two years after the tax was paid if no return was filed. Wells calls this the “refund statute end date,” and it’s your final deadline to file any claim.
Here’s the key detail that trips up practitioners: “The filing of an original return, not an amended return, begins the period of limitation,” Wells explains. This means if you amend a return filed years ago, you’re still working within the timeline set by that original filing date.
Step Two: How Much Can You Actually Get?
Even if you file a timely claim, step two determines how much you can recover through the “lookback period.” The rules change dramatically based on when you file:
- File within three years: You can look back at the full three years
- File after three years: Your lookback period shrinks to just two years
This is where Hamilton got trapped. The court found she filed a timely claim, satisfying step one. But because she filed her 2017 return so late—November 2021—her lookback period couldn’t reach back to her 2017 tax payments, which were deemed made on April 15, 2018.
As Wells puts it, “The court said she filed a timely claim for refund. However, for that timely claim, there was no refund available. What does that mean? How can that be?” To understand the answer, you have to know when the IRS considers payments “made” under tax law.
The Payment Timing Trap That Caught COVID-Era Taxpayers
The lookback period depends on when payments are “deemed made,” not when they actually happened. This creates counterintuitive situations that can permanently cost taxpayers money.
The Withholding Rule
Under IRC section 6513, all tax withheld from your paychecks during the year is deemed paid on April 15th of the following year. It doesn’t matter if the money was withheld in January or December—it’s all considered paid on April 15th.
For Hamilton, “Her 2018 withholding is deemed paid on April 15th, 2019, which is the 15th day of the fourth month following the close of that tax year.”
The COVID-19 Disaster
These timing rules created a perfect storm during the pandemic. The IRS postponed filing deadlines—2019 returns were due on July 15, 2020, and 2020 returns were due on May 17, 2021. But payments were still deemed made on April 15th of each year.
This trapped taxpayers who filed during the postponement periods. Someone who filed their 2019 return on July 15, 2020 (perfectly timely) might wait until July 15, 2023, to file a refund claim. Their three-year lookback would run from July 15, 202,3 back to July 15, 2020. But their 2019 payments were deemed made on April 15, 2020, which falls outside their lookback window.
Wells explains: “This left taxpayers who didn’t file extensions for those tax years stuck with potentially valid refund claims, yet they didn’t have any periods within the lookback period because those payments were still deemed filed as of April 15th.”
The IRS eventually provided relief through Notice 2021-21, but only after recognizing that its own timing rules created harsh consequences for taxpayers who did nothing wrong.
The Dangerous “Due Date” Myth Costing Taxpayers Money
A destructive misconception in refund statute law sounds perfectly reasonable: “You have three years from the due date to claim a refund.”
But Wells makes it crystal clear that this perception isn’t accurate. “The end date is actually three years from the filing date or possibly two years from the payment date.” The due date might coincide with these periods for taxpayers who file on time, but it’s not what controls the deadline.
Why the Due Date Myth Fails
The due date myth crumbles in the exact situations where practitioners need precision most:
- Late-filed returns: A taxpayer who files their 2020 return in September 2023 doesn’t have until April 15, 2024 to claim refunds. Their three-year period starts from September 2023.
- Amended returns with post-deadline payments: Wells explains these create situations where “a valid refund claim made more than three years after the due date, could look back into those payments made after the deadline.”
The Hamilton case perfectly illustrates this. If you applied the due date myth, you’d think she was too late filing in November 2021 for a 2017 return. But the court found her claim was timely because the real rules don’t work that way.
The Professional Liability Risk
For tax professionals, relying on the due date myth creates serious liability exposure. When practitioners give advice based on this oversimplified rule, they risk costing clients money they can never recover.
Wells emphasizes the finality built into these rules: “Once that statute of limitations is up, once you have passed that refund statute end date, there is no going back with some very, very limited exceptions.”
Why These Rules Are So Unforgiving
The refund statute of limitations operates with mechanical precision, regardless of hardship or apparent unfairness. Courts consistently rule that these deadlines are clear and unambiguous, so there’s no room for equitable exceptions or reasonable cause relief.
The Finality Principle
Congress built finality into the tax code intentionally. As Wells explains: “There’s an implicit concept in the tax code that Congress has written into it. I tend to call it finality.” At some point, taxpayers should feel confident that old tax years are truly closed.
But this finality only works if practitioners understand the real rules. The Hamilton case, with its modest $2,070 refund that became a years-long legal battle, shows how even small amounts trigger the same unforgiving rules that govern million-dollar refunds.
The Stakes for Tax Professionals
These rules affect every practitioner who works with amended returns, late filers, or clients with potential refund claims. Understanding when the IRS deems payments made, how postponements interact with lookback periods, and when the due date myth doesn’t apply isn’t just technical knowledge—it’s client protection. And it can be the difference between recovering thousands of dollars and losing them forever.
When Time Runs Out, Money Disappears Forever
The refund statute of limitations represents tax law at its most technically demanding and unforgiving. The two-step framework of limitation periods and lookback periods creates a system where understanding timing rules can mean the difference between financial recovery and permanent loss.
For tax professionals, these rules represent the intersection of expertise and fiduciary responsibility. Relying on oversimplified rules or misunderstand the distinction between filing dates and due dates means risking giving advice that permanently costs clients money.
This finality places enormous responsibility on practitioners to understand and navigate these rules correctly.
Don’t let technical complexity cost your clients money they can never recover. Listen to Wells’ complete Tax in Action episode to master these critical timing rules and protect your clients’ interests and your professional reputation.