The Power of Extra Payments
Making extra payments toward your principal can save you tens of thousands of dollars in interest and help you pay off your mortgage years earlier. Even an extra $100 per month makes a significant difference over a 30-year loan. Here’s why it works, how much you can save, and how to do it the right way.
Why Extra Payments Work So Well
Mortgage interest is charged on your remaining balance every month. In the early years most of your payment goes to interest. On a $240,000 loan at 6.75%, the first payment of about $1,557 includes roughly $1,350 of interest and only about $207 of principal.
Every extra dollar you send goes straight to principal. That lowers the balance that all future interest is calculated on, so the savings compound for the rest of the loan. An extra dollar paid in year one saves more than a dollar paid in year twenty.
How Much You Can Save
Here’s what different strategies do to a $240,000, 30-year fixed loan at 6.75% (principal-and-interest payment of about $1,557, total interest of about $320,400 if you never pay extra):
| Strategy | Paid off in | Interest saved |
|---|---|---|
| No extra payments | 30 years | – |
| Extra $100 per month | About 25 years | About $62,000 |
| One extra payment per year (≈ $130/month) | About 24 years | About $76,000 |
| Extra $200 per month | About 21.7 years | About $102,000 |
| Extra $500 per month | About 15.9 years | About $169,000 |
| One-time $10,000 lump sum at the start | About 26.4 years | About $57,000 |
Figures are estimates rounded for illustration. Your savings depend on your rate, balance, and how far into the loan you start. Model your own numbers in the mortgage calculator, which shows the payoff date and interest saved for any extra monthly amount.
Ways to Make Extra Payments
- Round up: pay $1,600 instead of $1,557. It’s easy to forget you’re doing it, and it adds up.
- A fixed extra amount each month: $100, $200, or whatever fits your budget, set up as automatic.
- One extra payment a year: add 1/12 of a payment each month, or make one extra full payment annually. Some lenders offer true biweekly plans (26 half-payments a year), but avoid third-party services that charge fees for the same result.
- Windfalls: put part of a bonus, tax refund, or raise toward principal.
- Recasting: after a large lump-sum payment, some lenders will re-amortize your loan for a small fee. That lowers your required monthly payment instead of shortening the term.
Do It the Right Way
- Label it “principal only.” Otherwise some servicers apply extra money to next month’s payment instead of your balance. Check your statement to confirm.
- Check for prepayment penalties. They’re uncommon on standard home loans, but read your note to be sure.
- Remember escrow doesn’t shrink. Extra principal shortens your loan, but property taxes and insurance continue as long as you own the home.
When Extra Payments Aren’t the Best Move
Paying down a mortgage early is a guaranteed return equal to your interest rate, but it isn’t always the top priority. Consider these first:
- An emergency fund: money in your house is hard to access quickly. Keep three to six months of expenses in cash.
- Higher-interest debt: credit cards and personal loans usually cost far more than a mortgage. Our debt payoff planner helps you prioritize them.
- Employer retirement matches: a 401(k) match is an instant return that’s hard to beat.
- Low-rate mortgages: if your rate is low, long-term investing may grow your money faster. Compare scenarios with the investment calculator.
Smart homeowners also plan their overall strategy around their real income. Use the paycheck calculator to see your take-home pay and how much you can comfortably set aside for extra payments and savings.
Final Thoughts
You don’t need to double your payment to make a real difference. A consistent extra $100 to $200 a month, started early, can cut years off your loan and save a remarkable amount of interest. Once your emergency fund and high-interest debt are handled, extra principal payments are one of the simplest, lowest-risk ways to build wealth through your home.
