How do I make sure I don't double dip on mortgage interest and property tax deduction

[d7knight]

I live in my primary residence and rent out 2 / 5 bedrooms  ~12% space in house rented.

For 2022 I am itemizing and worried about Double dipping on the mortgage interest and property tax deduction on Schedule A and a Schedule E.

So far for Schedule A I put in the full numbers sent on the 1098 form for mortgage interest and the property tax value of all the payments I made to the county in 2022. For Schedule E I computed the amounts corresponding to the rental and it is pretty small I entered them in the rental property section.  Would I go back to the Schedule A data I entered and subtract off the amounts I put in the rental section to insure no double dipping.

For property tax I am above the salt limit of 10k and the amount allocated to the rental subtracted from the total amount isn't below the 10k limit am I allowed to double dip here? 

[Carl]

Basically, if you work through the program the way it's designed and intended to be used, you'll be entering mortgage interest for the rental first. Based upon your selections, the program (not you) will split that mortgage interest between SCH E based on the percentage of space that is rented and the time it was rented for the tax year, and SCH A for the percentage of space that is personal use, as well as the time is was personal use during the year.

Assuming you only have one single 1098 to deal with, the amount on line 8 of the SCH A and the amount on line 12 of the SCH E should add up to the total reported on the 1098.

If you are affected by SALT, then that only affects the amount on SCH A and not the amount on SCH E.