I had to mail in my state taxes for NY due to NYC regulations, which I didn’t know about since I’ve been using TurboTax for 7 years. I was only informed of this after I had filed my taxes federally using the IRS system. There is no way to just file your state taxes online, you have to do both and if you submit them a second time it just gets rejected.

It’s good that they’re doing this, but it caused a lot of headaches for me that I was unaware of.