Mortgage amortization schedule calculator 2026
This mortgage amortization schedule calculator generates a detailed payment table showing how each payment is allocated between principal and interest over the life of the loan. The schedule is calculated using standard amortization formulas based on the loan amount, interest rate, term, and payment frequency you enter.
Estimates only. Loan terms and approval depend on lender underwriting.
Mortgage Amortization Schedule Calculator
Mortgage Result
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How it works
An amortization schedule is a table that lists each payment period, the total payment amount, the portion applied to interest, the portion applied to principal, and the remaining balance after each payment. For fixed-rate fully amortizing loans, the scheduled payment amount remains constant, but the interest portion declines over time as the principal balance decreases. Interest for each period is calculated using the beginning balance multiplied by the periodic interest rate, and the principal portion equals the total payment minus the interest charge. The remaining balance is reduced by the principal paid in each period.
Examples
Example scenario: For a $300,000 mortgage at a fixed interest rate over 30 years, the amortization schedule will show 360 payment periods. Early payments apply a larger share toward interest and a smaller share toward principal. Over time, as the outstanding balance declines, the interest portion decreases and the principal portion increases. Making additional principal payments may reduce the remaining balance faster and shorten the effective payoff timeline compared to the original schedule.
Limitations and important notes
This amortization schedule reflects principal and interest only. Many mortgage payments also include property taxes, homeowners insurance, and, if applicable, mortgage insurance premiums or other required charges. The Consumer Financial Protection Bureau explains that the total monthly mortgage payment may exceed the principal-and-interest amount shown in an amortization table (see https://www.consumerfinance.gov/ask-cfpb/on-a-mortgage-whats-the-difference-between-my-principal-and-interest-payment-and-my-total-monthly-payment-en-1941/). In addition, actual loan balances and payment allocations may differ from calculator results due to rounding, adjustable interest rates, servicer practices, loan modifications, fees, or product-specific terms. This schedule is an informational estimate only and is not an official payoff statement.
FAQs
What is a mortgage amortization schedule?
A mortgage amortization schedule is a table showing each payment over the life of the loan, including how much of each payment goes to interest, how much goes to principal, and what the remaining loan balance is after each payment.
Why does more interest get paid at the beginning of a mortgage?
Interest for each period is calculated using the outstanding principal balance. Because the balance is highest at the start of the loan, the interest portion of early payments is larger. As the balance declines, the interest portion decreases and more of each payment is applied to principal.
Does this include property taxes and insurance?
No. This schedule reflects principal and interest only. Many borrowers also pay property taxes, homeowners insurance, and potentially mortgage insurance as part of their total monthly housing cost.
Can extra payments change the amortization schedule?
Yes. Additional principal payments may reduce the outstanding balance faster, lower future interest charges, and shorten the time required to repay the loan compared to the original amortization schedule.
Calculations are simplified and for guidance only. Always double-check results and current rules with official sources or a qualified professional before making financial decisions.