If I received a overdue tax bill what should I do?

I received and overdue tax bill for taxes I had already paid an I would like to know why I received this tax bill?

posted

Only the IRS (or state) can tell you. Maybe they rejected your payment? How did you pay it? Your only proof of payment is your bank or credit card statement showing it coming out. Turbo Tax does not pay it. They only send your bank info to the IRS or state for them to pull it out of your account.

Or the IRS adjusted your return and you owe more. Or you have an underpayment penalty for owing too much or paying late.