Decision planning calculator
Loan Repayment Calculator
Estimate monthly loan payments, total interest, and the payoff impact of extra payments.
Debt and borrowing decisions →Reviewed by Syvoq Editorial Team ·
A comfortable instalment can still be an expensive loan
Enter the amount actually borrowed, the annual rate that applies, and the full term. The calculator separates principal from interest and lets you test an extra monthly payment. That makes the trade-off visible: a longer term lowers the required payment but usually keeps the balance alive—and accruing interest—for longer.
Compare the result with the lender’s total repayable figure, not just the advertised instalment. Arrangement fees, insurance, taxes, variable-rate changes, and early-repayment charges may sit outside this simple amortization model. If the two totals differ, ask which cost or timing assumption explains the gap before signing.
A real-world check
The cheaper-looking five-year option
A five-year loan may fit the monthly budget more easily than a three-year loan. But if the total interest is much higher, test whether a middle term or a modest recurring overpayment preserves cash-flow room without paying for two extra years of borrowing.
How to read the result
Payment fits with room
Stress-test it alongside insurance, maintenance, and a difficult month before deciding the loan is affordable.
Interest is a large share
Compare rate, term, fees, and other providers; reducing the principal or term may matter more than a small payment change.
Extra payment helps sharply
Confirm the lender allows overpayments and applies them to principal without an offsetting charge.
What this calculator cannot know
- The model assumes a stable rate and equal monthly payments and excludes fees, insurance, taxes, and payment holidays.
- Actual lender calculations can use different day counts, rounding, repayment dates, or variable-rate reset rules.
What to do next
- Request the rate, fees, total repayable, and early-repayment terms in writing.
- Compare at least two terms using the same principal and all-in costs.
- Test the payment inside the full household budget before accepting the loan.
Keep the payoff visible
Track balances and the next debt milestone
See debt beside the rest of your finances and keep the payment plan connected to real cash flow.
Common questions
About this calculator
Is this for mortgages too?
It works for any amortizing loan. For home loans with taxes, insurance, or fees, use the mortgage calculator as a broader estimate.
What happens if I pay extra each month?
Extra payments reduce principal faster, which usually shortens the term and lowers total interest.
How it works
The scheduled payment uses the standard amortizing loan payment formula.
Extra payments are applied monthly after interest is charged.
Total interest is estimated over the full repayment schedule.
Educational planning estimate. It does not replace an official calculation or individualized financial, tax, or legal advice.
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