The interface is fairly easy to use. The major problem that I had was using the State software. I expect the software to tell me what items are deductible, and not allow me to determine what is deductible. The software has all the relevant facts, and it should complete the calculations. If it is left to me to deduct items, I would of course deduct everything. The software failed to provide guidelines for deductions. I expect the software to do this. That is why I buy Tax Software.
When finished and ready to file the state program kept finding a missing entry. the AZ 211 form wanted last year federal liability. Every time I entered the number the box would be automatically cleared. Finally used the option at the bottom of the screen to delete the form. Then the program did it's check and had no issues. It then went ahead and e-filed.
I bought this software (downloaded) and completed both Federal & State taxes this morning! Just one issue I had concerned no obvious entry for foreign pension income.