RENT
There is not a rent deduction or credit on your Federal return. If your state has anything for renters you will be prompted to enter your rent info when you complete your state return. As far as I know, the states that have anything for rent are Arizona, California, Connecticut, Hawaii, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Jersey, Rhode Island, Vermont, and Wisconsin.
So do you enter the amount you pay out of pocket or the total rent amount for the apartment?
If your rent is subsidized, you may not be able to claim a state deduction or credit. What state is this?
According to the instructions for NY form IT-214-I (https://www.tax.ny.gov/pdf/current_forms/it/it214i.pdf), you cannot claim any subsidized portion of your rental charge.
Maine, I pay 30% of my income for rent and section 8 pays the rest. What amount is claimed, the 30% of the rent or 100%?
Only the portion you actually pay with out of pocket funds.