After you file

@macuser_22  I'm referring to if you don't withhold enough prior to year end (Dec 31, 2020) you can also have penalties.  I did not withhold 80% of my taxes or as much as the year before.  Because the gov't just sent me a huge refund that I don't deserve, does that count against me?  I will pay the refund and what I owe by Apr 15, 2021.  I just need to know if the clock started ticking on the refund money.

 

@ErotSorry I hijacked your thread.  As @macuser_22  said, you can file an amendment as soon as the form is available and your original tax return and refund/pymt owed has been processed.  Or you can wait as long as 3 years as long as the govt has the money you owe them by Apr 15, 2021.  If you don't owe them, you want to get your refund ASAP.