More than a million American taxpayers could be leaving cash on the table as the deadline to claim tax refunds from three years ago is fast approaching. The Internal Revenue Service (IRS) has issued a warning that more than a million taxpayers are still eligible to receive a share of more than $1 billion in refunds—but they need to act quickly.

The IRS has issued a crucial warning to millions of Americans: act quickly or risk losing out on $1 billion in unclaimed tax refunds from 2021. With the deadline fast approaching, taxpayers must take immediate steps to secure their refunds before they vanish.

The IRS estimates that more than $1 billion in refunds remain unclaimed by taxpayers who have not filed their Form 1040.

The IRS has announced that over $1 billion in tax refunds from the 2021 fiscal year remain unclaimed. With a deadline looming in 2025, eligible taxpayers still have a chance to claim their refunds. Discover who stands to gain the most and why some missed out on their refunds.

The IRS estimates that more than 1.1 million taxpayers might have qualified for a refund in 2021 but did not file a federal income tax return to claim it.

The IRS reminds taxpayers that the deadline to claim these refunds is April 15, 2025. If unclaimed, these funds will be turned over to the U.S. Treasury.

The median potential refund nationwide is $781 for 2021. Florida, with 69,800 individuals who did not file, is just below the median potential refund at $721. New Yorkers — 73,000 of them — left the most money in the IRS till: $995.

More than 14,000 South Carolina taxpayers are owed a portion of over $12 million in unclaimed refunds, the IRS says. According to the federal agency, the unclaimed refunds apply only to the 14,400 South Carolinians who haven’t filed a 2021 tax return.

How many tax returns has the IRS processed so far in 2025? On Friday, the IRS released statistics comparing its progress through the sixth week of tax season 2024 (ending March 8,