I am auditing my TIL and RESPA and in my audit papers i am to check the accuracy of the apr. How do i do that? i am an fdic regulated bank. i went to the occ website to downloand the calculator but it won't go on my computer. we do loans that are 20 or 30 year am with 2 year balloons.

You need to get some help with the download - the OCC APRWIN is the best tool for checking APRs.

APRWIN won't run on the Home version of Windows 7. The Professional version should load & run APRWIN in "XP Mode." The alternative, of course, is to find an old PC that uses XP or many other, older versions of Windows.

Richard - I have Windows 7 Home Premium and I don't have a lick of trouble running it.

Once you get APRWIN figured out (I'm running it on Windows 7 with no problems), make sure you independently calculate the Amount Financed based on loan amount minus prepaid finance charges and don't just accept what's on the TiL. Otherwise, all you're doing is validating that the loan platform is working. The other thing to validate is the payment schedule listed in the promissory note against the TiL and make sure that payment dates didn't get changed on the note without a corresponding reprint of the TiL.

And verify the payment amounts too; you can use a financial calculator to do that pretty easily.