Loans & MortgagesTool Review

Mortgage Amortization Calculator

Provided byNerdWallet Financial Calculatorsnerdwallet.com

Shows the amortization schedule for a mortgage across its full term.

Screenshot of Mortgage Amortization Calculator on NerdWallet Financial Calculators
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About this tool

What Mortgage Amortization Calculator does

A mortgage amortization calculator that computes monthly payments and produces a full repayment schedule. Users enter the principal loan amount, annual interest rate, and loan term in years to receive a table showing how each payment splits between interest and principal. The output displays the remaining balance after every period, letting borrowers see the gradual shift from interest-heavy early payments to principal-heavy later payments. The tool also accepts a start date, so the schedule aligns with the actual loan origination calendar. Compared with other amortization tools, the NerdWallet version stands out for its clean, side-by-side layout that pairs each payment row with its running principal balance, and for embedding the calculator directly within a broader mortgage resource hub that includes comparison guides and rate data. This integration means users can move from calculation to lender selection without leaving the site.

Step by step

How to use the NerdWallet Financial Calculators Mortgage Amortization Calculator

  1. 1

    Enter the principal loan amount in the Loan amount field

  2. 2

    Input the annual interest rate in the Interest rate field

  3. 3

    Set the loan term in years using the Loan term (years) field

  4. 4

    Optionally select a Start date to anchor the schedule to your closing date

  5. 5

    Click Calculate to generate the amortization schedule showing principal, interest, and monthly total for each payment

Is it right for you

Best for

Homebuyers and refinancers who want a clear, visual breakdown of how their payments reduce principal over time and who value a calculator that integrates with lender comparison resources.

Limitations

  • Designed for fixed-rate mortgages; adjustable-rate inputs may not reflect future rate changes
  • Output assumes on-time payments and does not include property taxes, insurance, or PMI unless manually entered
  • Schedule displays a fixed number of rows; very long-term loans may require scrolling to see later payments
Questions

Mortgage Amortization Calculator FAQ

Can I use this calculator for an adjustable-rate mortgage?
The tool is built for fixed-rate mortgages. If your rate adjusts over time, the schedule will show a static interest amount based on the initial rate you enter.
Does the amortization schedule include property taxes and homeowners insurance?
No. The calculator only breaks down principal and interest. Taxes and insurance are typically handled through an escrow account and are not reflected in the principal-versus-interest split.
What if I make extra principal payments?
The standard schedule assumes minimum monthly payments only. Extra payments would shorten the loan term and reduce total interest, but the calculator does not model optional prepayments.
How accurate is the monthly total it shows?
The monthly total is calculated from the loan amount, interest rate, and term using the standard amortization formula. Actual lender quotes may vary based on fees, points, or different compounding methods.
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