Wow, it's 2024 and my home/business software for TT desktop 2023 year has this same problem. I guess they can't figure it out. Like you, I have two 1098s and the second one (a heloc) only calculates the deduction correctly if I enter $1000 or less for the mortgage balance. As soon as I enter $1 over $1000 for this second 1098 the deduction decreases by $3 for every $1 increase in mortgage balance over $1000. What Are we left to do? If I combine the balances of the 1098 and enter them as a single form it calculates the deduction correctly....
