Hi @Bostondoc84. Yes, the only thing I would clarify on option 3 is that you can do the manual override on one of the supporting schedules rather than the Schedule A itself. I only mention this since the "Deductible Home Mortgage Interest Worksheet" feeds the Schedule A, but doesn't get submitted to the IRS (it's one of the "Keep for your records" worksheets). I don't know if where you do the override might make a difference on whether TT allows you to efile.
The manual override workaround that seems to require the least overriding of calculations (at least to me), is overriding the "Average Balance" lines of Part 1 on the "Deductible Home Mortgage Interest Worksheet" using the Interest Paid divided by Interest Rate method described on some of the earlier posts (or links). Once I override these average balances, everything else on the worksheet and schedule A ends up correct.
I can't believe the response on another thread was that this isn't a bug. This is definitely a bug, and one that TT needs to take very seriously. The fact that TT can't calculate average loan balances correctly for anyone with more than one 1098 (due to refinancing or having their mortgage servicer change), means that the software is overstating taxes for anyone who doesn't catch the error and find a workaround. Imagine how many people refinanced and trust TT to calculate their taxes correctly. If I didn't dig into the details, TT would have cost me $2,000 this year! This seems ripe for a class action lawsuit if they don't fix it. Especially since it looks like it was an issue last year as well and was never fixed. The software doesn't even give a warning to users that it can't handle this tax situation (which is an incredibly common and basic situation) and you need to manually calculate the average balances yourself. I'm guessing that TT will be on the hook for millions if they don't fix it, and all of the users who didn't know about the error check their taxes. That's a lot of claims on their "100% Accurate Calculations Guarantee".
Thanks to everyone here for raising this issue and trying to get TT to do the right thing.
