The IRS is warning the public that $1 billion in unclaimed 2021 tax refunds remain because about 1 million taxpayers haven't filed tax returns for that tax year as an April 15 deadline looms.

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.

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.

“Under the law, taxpayers usually have three years to file and claim their tax refunds. If they don’t file within three years, the money becomes the property of the U.S. Treasury,” according to the IRS.

As the April 15 filing deadline looms, the Internal Revenue Service reminds taxpayers that after three years, any unclaimed 2021 tax year refunds go to the U.S. Treasury.

You can’t get a credit or refund if you don’t file a claim within 3 years of filing the original return, or 2 years after paying the tax, Julie Jason says.

Taxpayers eligible for the Earned Income Tax Credit for 2021 may also claim those funds if they file their returns for the year. Qualifying incomes are $21,430 for a single person without children or up to $57,414 for a married couple filing jointly with three or more qualifying children.