<<The other person is the one pays the expenses, monthly mortgage, in addition to collecting the monthly rental income.>>
Is the other person "collecting" the rental income for themselves, or for some other person or entity? If it is for themselves, they must report it on their tax return.
Also, the "other person" cannot claim the mortgage interest deduction for someone else's debt unless they are a legal owner of the property.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
