This information may be dated (I last did this 2 years ago, I think), but in case it is helpful: At least 2 years ago, TurboTax did not support form IT 237. What I did: fill IT 237 out separately (downloaded from the NYS site), fill in the relevant information into TurboTax without attaching the actual form, then print everything out and mail it USPS to the NYS tax department. The key thing I learned was that NYS will accept *either* TurboTax filing *or* physical mail, but not both -- you can't file with TurboTax and send IT 237 separately. However, you can have TT calculate everything for you as usual, then print out the whole packet and send by mail. Hope this helps.
