Loan With Extra Payments
Quick answer
Enter base loan, then add monthly or annual extra principal. Compare total interest vs baseline.
For a related estimate, see Apr Calculator.
Explore further: Auto Loan Calculator · Car Loan Calculator
What moves the payment
Fixed-rate amortizing loans use principal, APR, and term. APR calculators include fees in the effective rate. Credit cards revolve—interest compounds on average daily balance. Debt payoff order changes total interest when you redirect surplus dollars.
Explore further: Credit Card Calculator · Credit Card Interest Calculator
Extra payments attack principal directly, shortening effective term. This intent contrasts one-time lump sums versus steady monthly adds—the curve differs.
How to use this calculator
- Apply-to-principal: Ensure servicer credits immediately—some hold until month-end.
- Prepayment penalties: Rare on many consumer loans but check contract.
- Opportunity cost: Compare guaranteed interest savings vs investing alternatives.
Real-world examples
- Example: +$150/mo on $25k @ 8% / 60 months can shave months and meaningful interest (illustrative).
- Sensitivity check: Nudge the rate by about +0.5% and the principal by about −5%. If the payment, break-even, or target amount moves enough to change your decision, you are still on a steep part of the curve where small inputs matter.
Explore further: Credit Card Payoff Calculator
What this means
Recurring small adds often beat sporadic large lumps early in the loan when balance is highest.
FAQ
Is this a loan commitment?
No. Outputs are educational estimates. Final payments, APR, and fees come from your lender’s disclosures.
How accurate is this calculator?
It applies standard math to the inputs you enter. Real lenders, payroll rules, and rounding can differ—use results for planning and comparison, not as binding quotes.
Why might my result differ from another website?
Different assumptions (APR vs note rate, day-count, tax year, rounding mode, or unit definitions) shift outputs slightly. Align inputs with the same definitions when you compare.