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 ...

President Donald Trump has signed a new law tightening the rules around IRS "math error" notices, forcing the agency to show its work and giving taxpayers a clearer, enforceable 60-day window to push ...

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 ...