I have the form that the bank sent me showing how much interst I paid, what IRS form do I need and is a photocopy acceptable to send in with the rest of the return?
I was just researching this myself today since I am looking to buy a house and I wanted to determine how much tax savings I could reapply to my overall budget.
Or you can do it on paper following the instructions in the books then use turbo tax online to double check your work, but just don't submit it online. Last year I used the online one to give me the final numbers but then cancelled out. If you don't electronically file then there is no fee to use the system to do the calculations.