Get your taxes done using TurboTax

In the TT program ... in the FILE tab you cannot make a partial payment ... it is all or nothing.   So choose the "mail a check" option so you can efile the return then  either mail in a partial payment  OR  pay online on the IRS site here : https://www.irs.gov/payments

 

You can also set up a payment plan  if you wish ... click on that blue button and make an initial payment with the application.