With the GHL calculators you see below, you can quickly estimate your potential       monthly payment, determine how much income you need to qualify, create a mortgage amortization schedule, and much more. Each calculator has an easy-to-understand set of instructions. To use a calculator, click on the appropriate link below. To return to this page from a calculator page, click on your browser's "back" button. Amortization Schedule: Estimate monthly principal and interest payments and mortgage balances for the term of your home loan. APR: (Annual Percentage Rate) Calculate the actual APR for a loan, taking into account closing costs, points, and the quoted interest rate for the loan. Effects of Prepayment: Calculate the effects of paying additional monthly principal against your loan. Pre-Qualification Calculator: Estimate maximum purchase price based on income, percent downpayment, and maximum monthly debts. Income Requirement: Calculate the income required to qualify for the home of your dreams. Loan Length: Compare the amount of time it will take to pay off your loan with various monthly payment amounts. Mortgage Payment: Calculate a monthly mortgage payment. Payment Table: Compare the monthly mortgage payment for a range of interest rates and principal amounts.