Does the irs charge you interest while they are processing your amended tax return, ie if it takes 4 to 6 months to process?

[macuser_22 · Accepted solution]

If you owe additional tax then interest is charged from the due date of the original tax return until they receive the payment.    As soon as you know the amount you should pay the tax online to stop the interest regardless of how long it takes to process of send a check with the amended return.