Extra Payment Calculator
Pay faster, save interest, and see your new mortgage payoff date. Estimate your real payoff impact before adding more money to your loan.
Your Loan Details
The Fast Track
Added to every payment.
Paid immediately.
Your Savings Trophy
Compare The Two Paths
Pay More With Purpose
Extra mortgage payments can help reduce your principal balance faster. When the balance drops sooner, less interest may build over time.
This calculator helps you see the real payoff impact before adding more money to your mortgage.
Extra Payment Impact
The main goal is simple: reduce principal faster.
Even a small extra payment can change your payoff timeline when applied consistently. The calculator shows how much time and interest you may save compared with your regular mortgage schedule.
Key Inputs
For a useful estimate, enter:
- Loan balance
- Interest rate
- Remaining term
- Extra monthly
- Lump sum
- Start date
Principal First
Extra payments should go toward principal.
If extra money is not applied correctly, it may not reduce your loan the way you expect. Always confirm with your lender that additional payments are credited toward principal balance.
Interest Savings
Interest savings are often the biggest reward.
Because mortgage interest is based on the remaining balance, paying principal sooner may reduce the total interest paid over the life of the loan.
Payment Options
You can test different payoff strategies:
- Extra monthly payment
- One-time lump sum
- One extra payment per year
- Biweekly payments
- Early vs. later extra payments
This makes it easier to choose a plan that fits your budget.
Smart Check
Before paying extra, review:
- Emergency savings
- High-interest credit card debt
- Retirement goals
- Loan prepayment rules
- Monthly cash flow
Paying extra is useful only when it does not weaken the rest of your finances.
Quick Answers
How much does one extra mortgage payment a year save?
Making just one extra mortgage payment per year can typically shave 4 to 5 years off a 30-year mortgage and save you tens of thousands of dollars in interest, depending on your rate and balance.
Should extra mortgage payments go to principal or interest?
Extra payments should always be applied directly to the principal balance. This immediately reduces the balance on which future interest is calculated, maximizing your savings.
Is it better to make a lump sum payment or extra monthly payments?
A lump sum payment made early in the life of the loan saves the most interest because it immediately drops the principal. However, consistent extra monthly payments are also a highly effective and budget-friendly strategy.
What is a biweekly mortgage payment?
A biweekly schedule means paying half your monthly payment every two weeks. Because there are 52 weeks in a year, this results in 26 half-payments, which equals 13 full payments per year (one extra payment).