Mortgage Amortization Calculator
See your monthly payment, total interest over the life of the loan, and how your balance and interest-vs-principal split shift over time. Early payments on a standard mortgage are mostly interest — this shows exactly when that flips.
Considering an interest-only loan instead? See our Interest Only Mortgage Calculator, or all our calculators.
Glossary
Interest is charged on your remaining balance, which is largest at the start. Even though your payment stays the same every month, more of each early payment goes to interest and less to principal — that split gradually flips as the balance shrinks.
A table showing how each payment splits between principal and interest, and your remaining balance, at every point over the loan term. This calculator shows it at 5-year checkpoints rather than every single month for readability.
Yes, significantly — any extra amount applied directly to principal reduces the balance interest is calculated on for every remaining month, which can cut years off a 30-year loan and save substantial total interest, even with modest extra payments.
No — this is principal and interest only. Your actual monthly mortgage payment (PITI) also includes property taxes, homeowner’s insurance, and HOA/common charges if applicable.