STATEN ISLAND, N.Y. -- Tens of millions of Americans have already received tax refunds from the federal government, with the average return totaling more than $3,000, according to the latest Internal Revenue Service data.

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

The IRS warns that an estimated $1 billion in tax refunds from the 2021 tax year may become the property of the U.S. Treasury if over 1.1 million Americans do not file their tax returns by April

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.

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.