Rent for what? Rent you paid for real estate? Rent to paid on a car lease? Why did you pay this rent? It matters, because on a federal return rent you pay for your house is not deductible. But rent you pay for business property is deductible as a business expense on SCH C if you're self-employed. Maybe it's not rent you paid at all, but rent you received?
Maybe you're dealing with a state return for some state that offers a renters credit?