I received a letter from the state of Colorado indicating they adjusted my return because their record of payments doesn't match my tax returns. Now I owe an additional amount. I paid quarterly estimated taxes in 2021, and can provide proof of payment. However, I noticed that on both the Federal return and the state return there is an "Overpayments applied to 2021" for state tax payments of $202. On the federal return it is on the Tax Payments Worksheet, line 6. On the Colo state return it is line 19 - Prior Year Estimated Tax Carryover. I cannot figure out where this came from. Any ideas on where to look for this, so that I can provide some type of proof of payment?
