http://www.tax.ny.gov/tp/reg/tpreg.htm Read the NYS info on their site. From my poor memory, you have to register to efile NY returns, and you have to efile NY returns. If you prepare 10, you also pay $100; don't remember if it's 10 or more or if it's more than 10, but if you're preparing 1 only, it doesn't matter, you won't have to pay. But, you do have to register. You'll receive your NY number at the end of the registration process. If you get your EA, you do not have to fuss with NY, except maybe for bank products. (Thank you NYSEA for your work doing away with registration for EAs!) PS There is also an education requirement for the 10 or more (more than 10?) which you can satisfy online by taking the free NY course. You won't need it for 1 return, but I'm told by NY preparers that it's pretty good. I'm going to try to take it late this year or early next.