Thanks Mike. I think you are correct about the 1040V. Did not see that I could print that from Turbo Tax. I also thought this should have been part of the procedure in TT when filing an extension electronically. I did not want to pay thru the IRS portal, but wanted to send a check. What I ended up doing was sending in a copy of the extension along with the check, and marked on the check the tax year and social security number.
