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.

The Internal Revenue Service is warning millions of Americans they might miss out on $1 billion in refunds if they don't act fast. Roughly 1.1 million Americans still have unclaimed tax refunds for 2021 that will disappear after April 15.

Alabamians who haven’t claimed their tax returns from 2021 will lose them if they don’t act before tax time this year. An estimated 18,100 Alabamians who did not file their form 1040 federal tax return for 2021 have a little more than a month to file before the refunds expire at the three-year mark.