Can I claim a tax refund for years I didn't file?

You can claim a refund only if you file the return within 3 years of the original due date (including extensions). For example, a 2022 return (due April 15, 2023) must be filed by April 15, 2026 to claim a refund. After 3 years, the refund is permanently forfeited to the U.S. Treasury, regardless of the amount. The IRS estimates that over $1 billion in refunds go unclaimed each year because taxpayers fail to file within the 3-year window. If you're owed refunds for multiple years, file the years within the 3-year window first to preserve those refunds. For years beyond the 3-year window, you should still file (the IRS requires it for compliance), but you won't receive a refund. Even if you can't get a refund, filing eliminates the failure-to-file penalty and may reduce your overall balance. If you had taxes withheld from your paycheck (visible on your W-2), you're especially likely to have unclaimed refunds. Request Wage and Income transcripts from the IRS to reconstruct income for years you don't have records for.