How to Pay Off Your Mortgage Faster Using Extra Payments
For most people, a mortgage is the largest financial commitment of their life. The idea of paying it off faster might feel ambitious—but even small extra repayments can save you tens of thousands of dollars in interest and cut years off your loan term. Here’s how it works, and how to calculate the difference for your own loan.
Why Extra Payments Matter
Every repayment on a loan is made up of two parts: interest and principal. Early in your mortgage, most of your payment goes toward interest. But when you make extra payments toward the principal, you’re reducing the balance that future interest is calculated on. It’s a powerful snowball effect in your favour.
How It Works: The Power of Compounding (in Reverse)
Normally, compounding works for investors—your balance earns interest on interest. But in a mortgage, compounding works against you: you pay interest on the remaining balance each month.
By reducing the principal faster, you effectively “flip” the compounding curve. Less balance means less interest, which frees more of each payment to go toward principal. Over time, that’s what accelerates your payoff.
Worked Example
Let’s say you have a $500,000 mortgage at 5.5% interest over 30 years. Your standard monthly repayment is about $2,839.
If you pay an extra $200 per month from the start:
- You’ll save roughly $78,000 in interest.
- You’ll pay off your loan in about 25 years instead of 30.
That’s five extra years of financial freedom just by rounding up your payment.
Smart Strategies to Pay Off Sooner
- Round up every payment. If your payment is $2,839, round it to $2,900. You’ll hardly notice it monthly but it compounds in your favour.
- Switch to fortnightly payments. Paying half your monthly amount every two weeks results in one extra full payment per year.
- Use windfalls wisely. Tax refunds, bonuses, or side income can make a noticeable dent if applied directly to the principal.
- Avoid resetting the loan term. When refinancing, keep your term length short to maintain progress on principal reduction.
Try It Yourself
Use our Loan Repayment Calculator to model your own numbers. Enter your balance, interest rate, and term, then adjust your extra repayment to see how many years you could shave off your loan.
Tip: Run two scenarios side-by-side—one with your current repayments, and one with an extra monthly amount. The difference is your potential savings in interest and time.
Frequently Asked Questions
Does paying extra really make that much difference?
Yes. Because interest compounds monthly, even small extra repayments in the early years can snowball into huge savings over time.
What if my lender charges a penalty for extra payments?
Check your loan terms. Most modern variable-rate loans allow extra payments without penalty, but fixed-rate loans might have limits.
Should I pay off the mortgage or invest?
It depends on your goals and tax situation. Some prefer the guaranteed return of debt reduction, while others invest for higher potential gains. A balanced approach works best for most households.