Get your taxes done using TurboTax

That is correct.  You can enter it as interest income whether on a 1099-int or not.   You will need to enter the payer's name and total interest collected.   You may get a message to enter a TIN for the person, but it is generally not required and that message will not prevent e-file.   There is an entry line for interest from Seller-Financed Loans also, which asks for the same information.   See below.