background: i rent a portion of my primary house, and calculate to split allocation based on rental portion.
Then, on schedule A line 8: home mortgage interest report on Form 1098, what should i put there:
1, box 1 amount on Form 1098, which is total interest
2, take out rental portion of that amount, ie. if rental portion is 30%, total interest amount report on 1098 is $10000, then put $7000 here? but it will be different than what reported on Form 1098 and seems not what the words really asking for.
