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Compare calculators

Both calculators run independently β€” change the inputs on either side to compare results.

Mortgage Advanced

Extra Payment Mortgage Calculator

Find out how many years earlier you can pay off your mortgage and how much interest you save by adding a fixed extra amount to each monthly payment. Perfect for homeowners with discretionary income who want to build equity faster.

Fill in the required fields to see your result.
Mortgage Advanced

Interest-Only Mortgage Calculator

Calculate your monthly payment during the interest-only phase of a mortgage and see how payments jump when full amortization begins. Ideal for borrowers evaluating IO loans or planning cash flow around the reset.

Fill in the required fields to see your result.

Key differences

Extra Payment Mortgage CalculatorInterest-Only Mortgage Calculator
CategoryMortgage AdvancedMortgage Advanced
Inputs required45
ResultTime to Pay Off (months)Payment After Interest-Only Period ($)
What it doesFind out how many years earlier you can pay off your mortgage and how much interest you save by adding a fixed extra amount to each monthly payment. Perfect for homeowners with discretionary income who want to build equity faster.Calculate your monthly payment during the interest-only phase of a mortgage and see how payments jump when full amortization begins. Ideal for borrowers evaluating IO loans or planning cash flow around the reset.