Taxpayers who have not filed 2024 income tax returns are told not to rush because they're worried about delays. Take time to file an accurate return.

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.

The IRS estimates that taxpayers who have not filed their Form 1040, Federal Income Tax Return, for the 2021 tax year have unclaimed more than $1 billion in refunds. The agency also estimates that the median refund amount is $781 for 2021.

The IRS has issued more than 29.6 million individual income tax refunds through Feb. 21, up 2.3% from a year ago.

If you've already filed your tax return, it's natural to wonder when you'll receive your refund. One of the most common questions is the exact time the IRS makes deposits.