Amortization Calculator
See how principal and interest change over time and what recurring extra payments can do to a mortgage payoff plan.
Last updated: March 13, 2026
Housing estimate notice
Mortgage and housing outputs depend on lender policy, taxes, insurance, PMI treatment, and local closing costs.
Use the result as a baseline estimate and validate it with current lender quotes and property-specific figures.
Interactive tool
The live form, validation, and result state for Amortization Calculator load after the page scripts run. The content below summarizes how the tool works and links to related pages in the catalog.
Analyze loan amortization with APR, term, extra monthly payments, and annual extra payments, then compare payoff speed, interest cost, and yearly balance milestones.
How to use Amortization Calculator
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Enter your inputs into the Amortization Calculator form.
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Adjust optional settings so the scenario matches your real-world case.
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Review the result, then tweak one variable at a time to compare outcomes.
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Keep your best scenario as a baseline for future decisions.
Housing decisions depend on local costs, lender rules, and market conditions. Validate these estimates with location-specific quotes.
Best use cases
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