MR
MortgageRateWatch
Free Tool

Mortgage Payment Calculator

Estimate your monthly mortgage payment. Adjust home price, down payment, loan term, and rate to find a payment that fits your budget.

Mortgage Calculator

Monthly Payment
$2,082
Loan Amount
$320,000
Total Interest
$429,484
Total Cost
$749,484

Estimate only. Does not include taxes, insurance, PMI, or HOA fees.

Tips for Lowering Your Payment

20% Down Payment

Putting 20% down eliminates private mortgage insurance (PMI), saving $100-300/month on a typical loan.

Total Cost Includes More

Your actual monthly housing cost includes property taxes, homeowners insurance, and possibly HOA fees. Budget an extra 30-40% above P&I.

Rate Shopping Saves Money

Getting quotes from 3-5 lenders can save 0.25-0.5% on your rate. On a $320,000 loan, that is $15,000-30,000 over 30 years.

Points vs. Rate

Paying discount points (1 point = 1% of loan amount) can lower your rate by about 0.25%. Worth it if you plan to stay 5+ years.

How the Mortgage Calculator Works

This calculator uses the standard mortgage amortization formula to compute your monthly principal and interest (P&I) payment. The formula is:

M = P[r(1+r)^n] / [(1+r)^n - 1]

Where M is the monthly payment, P is the loan principal, r is the monthly interest rate, and n is the total number of payments. This does not include property taxes, insurance, PMI, or HOA fees.