100% of mortgage interest on personally-owned rental properties is deductible. Mortgage interest is itemized just like any other cost incurred, e.g. maintenanc

100% of mortgage interest on personally-owned rental properties is deductible. Mortgage interest is itemized just like any other cost incurred, e.g. maintenance, utilities, advertising, property taxes, etc. The net profit/loss on the Schedule is then applied to your personal return. You might be limited in the size of loss you can apply, but that's an unrelated calculation.