Millions of Americans who file their own returns have long learned about tax math mistakes only after the Internal Revenue Service quietly changed their refund or balance due. A new federal law ...

Thanks to the IRS MATH Act, the IRS must now explain mistakes in plain English, show any adjustments, and put your 60-day appeal deadline front and center. It will be a major upgrade from previously ...

If you received a 6470 letter from the U.S. Internal Revenue Service in the mail regarding a "math error" in relation to your 2020 tax returns, you might owe more money on your next return. The 6470 ...