Annual Property TaxesProperty taxes are locally assessed taxes.Our mortgage calculator will help you compare and estimate the costs of each type of mortgage, including a 30-year fixed rate, a 15-year fixed rate, and a 5/1 ARM. There are different types of loans each will make a difference in determining your monthly payment. Property taxes, insurance, and HOA dues may also be included in the calculation. To calculate a mortgage, lenders look at the total cost, the down payment amount, the loan type (i.e., 15- or 30-year fixed), and the interest rate. Your actual mortgage rate will be based on individual factors, such as your credit score and the amount of your down payment. The calculator interest rate is based on the current average. Calculating mortgage payments makes it easy to predict your payment amount based on your projected down payment amount and interest rate. If you are considering purchasing a new home, you are probably wondering how much you will pay monthly for your mortgage. Buying a new home is exciting but can also be confusing if you are new to home loans and mortgage financing.