The calculators here show the monthly payments for fixed and adjustable-rate mortgages, and mortgages with special features such as temporary buydowns.

The major features of mortgage payments can be found in Mortgage Payments: A Primer. The different calculators listed below show monthly payments on different types of mortgages, or mortgages carrying special options. Mortgages carrying biweekly payments are found in Mortgage Payoff Calculators.

The background reading on fixed-rate mortgages is Fixed-Rate Mortgages (FRMs).

Monthly Payment Calculator: Fixed Rate Mortgages. (7a)
For borrowers who want to know the monthly mortgage payment on a fully-amortizing fixed-rate mortgage at different loan amounts, interest rates and terms.

The background reading on adjustable-rate mortgages is How Do Adjustable Rate Mortgages Work? Guidance on using the two calculators immediately below can be found at Payment Calculators For Adjustable Rate Mortgages (ARMs).

Monthly Payment Calculator: Adjustable-Rate Mortgages Without Negative Amortization. (7b)
For borrowers who want to know how the interest rate and monthly payments may change on an adjustable rate mortgage that does not permit negative amortization.

Monthly Payment Calculator: Adjustable-Rate Mortgages With Negative Amortization. (7c)
For borrowers who want to know how the interest rate and monthly payments may change on an adjustable rate mortgage
that permits negative amortization.

The background reading on option ARMs, which permit the borrower to select from alternative payment options, is Tutorial on Option ARMs.

Monthly Payment Calculator: Adjustable Rate Mortgages With Flexible Payment Options. (7ci)
For borrowers who want to know how the interest rate and monthly payments may change on an option ARM.

The background reading for FRMs with temporary buydowns is What Is a Temporary Buydown?

Monthly Payment Calculator: Mortgage Payments With Temporary Buydowns.
(7d) For borrowers who want an amortization schedule that shows the lower monthly payments in the early years from setting up a buydown account, and the amount that must be deposited in the account.