As I mentioned, every year that I've used it (I think 5 at this point), it has gotten a little bit better. More form-to-form transfers, less manual arithmetic within forms.
I've used it routinely for many years now. I also used it for VA which had similar free fillable forms. It seemed like an exact copy UI-wise but on a different domain.
However, this past year VA dropped free fillable forms due to lack of funding. Had to go back to mailing forms :/
