SDoftware Bug??: Mortgage Interest Deduction Calculation Not Working Correctly

[jhbunce]

As a TT user for over 20 years, I have never seen the mortgage interest deduction not functioning properly. Our AGI is <$200K. I always look to see the "Federal Refund" amount jump up once I enter in the interest amount on our mortgage - until this year! I entered in the interest from my 1098 ($11,750) and the "Federal Refund" amount only moved from $145 to $468! So to test this further, I incremented the interest amount by $10,000 to $21,750. The "Federal Refund" amount jumped from $468 to $2,868!! Why is this appearing not to work for me with our mortgage interest?

[AmyC]

I would suggest you look at your tax forms before and after the entry.  If the program had you at standard deduction and you added your mortgage interest so that you just passed the standard deduction, there would not be much change. The way the program is handling input is different this year, assuming the standard deduction until it is passed.