How should I add mortgage interest for primary resident with room rental

[zhuxi722]

I added the rental details in "Wages & Credits Sch E", and the rental portion is 30%. After I posted my mortgage interest into the Sch E part (Assume is 100 dollars). I found the rest 70% will count to Deductions (70 dollars). However, as I know the mortgage interest limit is 750K, and my mortgage is more than 750K. In this case, as I know I can not put the mortgage interest deduction as 70 dollars. It should be 100 * 75K / mortgage amount. However, I have no idea how to correct it, since it is automatically generated from the Sch E.

[PatriciaV]

You should be able to enter the correct amount of allowable interest for Schedule A under the Mortgage Interest topic in TurboTax Online. Even though a portion of the interest was carried over from Schedule E, you can change the Schedule A amount manually.

When your mortgage interest is being limited, TurboTax displays a message and provides an "Adjustment" box for you to enter your calculated interest deduction. To access this page, return to the 1098 topic and click Continue/Done at the bottom of the list of 1098s that you have entered. Answer any questions about your loan, then continue to the page "Your mortgage interest is being limited," you can enter your calculated deduction in the box under "Your adjustments".

See a screenshot of this page below.

[zhuxi722]

Thanks for replying!

I found even through I put adjustments as 0 as in your screenshot. I am still seeing the all deduction interest as the carryover from Sch E. 

If I put the correct interest number into the adjustment, then end of the deduction section, it will give me the interest carried over from Sch E + the adjustment number. Somehow the carried over amount from Sch E can not be overrided. 

[PatriciaV]

Adjust your entry to account for the amount carrying over from Schedule E. In other words, subtract the Schedule E portion from the adjustment you calculated so that the final deduction amount for Schedule A is correct.

[zhuxi722]

For example, in Sch E, I put 100 dollars, and I put the rent portion is 30%. The carryover from Sch E to Sch A is 70 dollars.

It my loan amount is 1m, so for the Sch A, I should put 100 * 750k / 1m * 70% = 52.5 dollars. So for the adjustment box I should put 52.5 - 70 = -17.5 However, the amount we put into the box has to be >= 0. So I have no choice but to make the interest 70 dollars.

[RobertB4444]

If you put $52.50 on schedule A then you would put the remaining amount - or $17.50 - on schedule E.  No negative numbers.