Boating is more affordable than you think. In some instances, you can buy a brand new boat financed for around $250.00 a month, like a car. Boats provide tax deductible and cost effective second homes. Interest on a boat loan can be deducted if the boat has a galley, berth and head. If you know what your monthly budget amount is to buy a boat, put that in the monthly window and work backwards to determine how much in total price you can afford. Or, if you know the cost of the boat you want, put that amount in the total window to determine monthly payment.