If you own real estate or other property that you rented out during the year, you can use Schedule E to report your income and expenses related to this activity.
Go to this section in Credit Karma Tax: Rental Real Estate Income
Credit Karma Tax will help calculate the portion of your expenses that are deductible based on the information you provide.
You can learn more About Schedule E (Form 1040), Supplemental Income and Loss from the IRS.