I received a 1098 form from the cooperation for the mortgage interest but I don't know how to report the income from the rent. and does this count as income made outside of my home state? would i have to file separately in NY?
If you rent your apartment to others, you usually can deduct, as a rental expense, all the maintenance fees you pay to the cooperative housing corporation.
In addition to the maintenance fees paid to the cooperative housing corporation, you can deduct your direct payments for repairs, upkeep, and other rental expenses, including interest paid on a loan used to buy your stock in the corporation.
Rental Property Income and Expenses