Extra Payment Calculator
See how quickly extra principal can pay off your mortgage.
What this calculator helps you estimate
This calculator estimates how much interest and time you could save by adding extra monthly or annual principal payments to your mortgage.
Paying extra principal — even a small amount each month — can shorten your loan and reduce total interest paid. See the estimated impact instantly.
Inputs
Your mortgage
Results
Extra-payment impact
Interpretation
Additional principal payments could shorten the estimated repayment period and reduce lifetime interest paid.
Understand the math
How this calculator works
Extra principal payments compound in your favor the same way interest compounds against you. This calculator models how consistent additional payments shorten your loan and reduce lifetime interest, using your actual loan balance, rate, and term.
Worked example
$300,000 loan, 6.5% rate, 30-year term, adding $200 extra principal every month.
- Without extra payments: total interest ≈ $382,633 over 360 months
- With $200/month extra: total interest ≈ $279,185 over 277 months
- Interest saved = $382,633 − $279,185 ≈ $103,449
- Time saved = 360 − 277 = 83 months (about 6 years 11 months)
An extra $200/month saves roughly $103,000 in interest and pays off the loan about 7 years early.
How to read your results
Interpretation guidance
- Extra payments made earlier in the loan save more interest than the same extra payment made later.
- Even a modest, consistent extra amount compounds into large savings because it reduces the balance interest accrues on every month going forward.
- One-time annual lump sums (bonus, tax refund) also meaningfully cut total interest — model both to compare.
- Weigh extra payments against other priorities: employer retirement matching or higher-interest debt often deserve attention first.
Deeper answers
More questions about this calculator
Is it worth paying extra on my mortgage?
For many borrowers, yes — extra principal reduces total interest and shortens the loan. Weigh it against other priorities like retirement savings, higher-rate debt, and cash reserves.
Should I make one large payment or a little each month?
Either helps. Consistent monthly extras compound over time; annual lump sums from a bonus or tax refund also meaningfully reduce interest.
Does my lender need to know I'm paying extra?
Confirm with your servicer that additional funds are applied to principal, not held as a future-payment credit — instructions vary by servicer.
Are there prepayment penalties on standard mortgages?
Most conventional, FHA, and VA loans do not carry prepayment penalties, but some non-QM investor loans do — confirm your specific note.
Results are estimates for educational purposes only and are not a commitment to lend, loan approval, or official Loan Estimate. Actual rates, payments, costs, taxes, insurance, mortgage insurance, eligibility, and loan terms may vary.
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Answers
Frequently asked questions
Is it worth paying extra on my mortgage?
For many borrowers, yes — extra principal reduces total interest and shortens the loan. Weigh it against other priorities like retirement savings, higher-rate debt, and cash reserves.
Should I make one large payment or a little each month?
Either helps. Consistent monthly extras compound over time; annual lump sums (from a bonus or tax refund) also meaningfully reduce interest.
Next step
Numbers are helpful. A personalized strategy is better.
Review your scenario with a Vabasso mortgage expert. No pressure, no obligation — just clear guidance for your next move.