The result shows both time and interest savings with an interactive balance chart.
Finance calculator
Mortgage Extra Payment Calculator
Compare the scheduled mortgage balance with a faster repayment path.
Calculated privately on your device
No account. Formula and assumptions are shown below.
Calculator inputs
Mortgage extra payment details
Formula & disclaimer
Accelerated Payment = Scheduled Amortizing Payment + Extra Monthly Payment
View assumptionsFormula reviewCalcs at Hand Editorial TeamVerified 29 August 2026 Β· automated checks included
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Resultβ
Projection
Move across the chart, drag the slider, or use the arrow keys.
Formula & details
Calculation
View period breakdown
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How to read this result
Three useful checks, kept deliberately short.
RM400,000 balance over 25 years at 4.2% with RM500 extra monthly: Calculate the scheduled payment Β· Re-amortize with the extra payment Β· Compare interest and payoff months.
Prepayment rules, lock-in charges and daily interest conventions can change the actual saving.
Formula and assumptions
Accelerated Payment = Scheduled Amortizing Payment + Extra Monthly PaymentThe model assumes the rate and extra payment stay unchanged.
Keep in mind: Confirm prepayment terms and the lender's settlement statement before acting.
Produced byCalcs at Hand Editorial Team
Last formula check29 August 2026
Review methodKnown examples + boundary cases
Editorial and correction policy β