I got an error message after running the "pre-check" before filing my returns, regarding a charitable donation I made that was eligible for an AZ tax credit. TurboTax had me go back to Federal, and deduct any charitable contributions eligible for an AZ tax credit, and instead, had me count that as an estimated tax payment to Arizona. This made sense to me. Why would I be allowed a Federal charitable deduction for something I'm getting an AZ tax credit on, (and since an estimated tax payment has the same effect as a tax credit). But after I followed Turbo Tax's instructions on this, and filed, AZ has now sent me a letter, because on my AZ tax form, there is a credit AND there is also an estimated tax payment, in the same amount, for my charitable gift. So unbeknownst to me, I had double-dipped! Must be a bug in the system.
