How One Extra Mortgage Payment Per Year Can Save You Thousands

Most homeowners focus on their monthly mortgage bill as a fixed cost—something you pay and forget. But there is a simple habit that can shave years off your loan and keep tens of thousands of dollars in your pocket. Making one extra principal payment per year. Not a big, painful lump sum. Just one additional payment each year, applied directly to the loan balance. The effect is surprisingly powerful.

The idea works because of how mortgage interest is calculated. Your monthly payment is split between interest and principal. Early in the loan, almost all of your payment goes toward interest. Very little touches the actual money you borrowed. That means you are paying for the privilege of borrowing money, but the debt itself shrinks very slowly. When you make an extra payment that goes straight to principal, you reduce the balance immediately. And because interest is calculated on the remaining balance, a lower balance means less interest charged next month. That saving compounds over the entire life of the loan.

Let’s look at a typical example. Suppose you have a $300,000 mortgage at a 6.5% interest rate with a 30-year term. Your regular monthly payment (principal and interest) is about $1,896. Over 30 years, you will pay roughly $382,000 in interest alone. That is more than the house cost. Now imagine you make one extra payment of $1,896 at the end of every year, applied entirely to principal. You would pay off the mortgage in about 24 years instead of 30. That saves you six years of payments—around $136,000 in total interest. And you own the home free and clear years earlier.

Notice that extra payment does not have to be huge. You can split it into twelve monthly additions. For example, add $158 to your monthly payment ($1,896 divided by 12). The result is the same: one extra full payment per year, but spread out in smaller, easier chunks. Many homeowners find that easier than coming up with a lump sum at year-end.

The key is making sure the extra money goes to principal. Some lenders automatically apply overpayments to next month’s regular payment, not to principal. You must tell your loan servicer, either online or by writing a note on your check, to apply the extra amount to principal. Otherwise, you get no benefit. Also check your loan documents for any prepayment penalty. Most conventional loans do not have one, but some adjustable-rate or government-backed loans might charge a fee if you pay off too quickly. Usually, making one extra payment per year is safe, but it is worth a quick call to your lender to confirm.

If you cannot afford an extra payment each year, even smaller amounts help. An extra $50 per month toward principal can shorten a 30-year mortgage by several years and save tens of thousands in interest. The principle is the same—every dollar you send ahead of schedule is a dollar that will never earn interest for the bank.

Another approach is to use a biweekly payment plan. Instead of paying once a month, you pay half your monthly payment every two weeks. Because there are 52 weeks in a year, you end up making 26 half-payments, which equals 13 full payments. That is one extra payment per year, done automatically. Some mortgage servicers offer this service for a fee, but you can do it yourself by dividing your monthly payment in half and sending that amount every two weeks. Just make sure the servicer applies the extra amount correctly.

The psychological benefit is also valuable. Watching your mortgage balance drop faster gives a sense of progress. You see the end date move closer. That can motivate you to find other ways to cut expenses and add even more to principal. It turns a boring monthly bill into a tool for building wealth.

A common fear is that paying off your mortgage early hurts your credit score. It does not. Your credit score reflects your history of making on-time payments, not how fast you pay off the loan. Once the mortgage is paid, you will have a paid installment loan on your report, which is positive. And you no longer have a big monthly debt, which improves your debt-to-income ratio.

The bottom line is simple: one extra payment per year is one of the easiest, most effective ways to manage your mortgage long-term. It requires no financial genius, no refinancing, and no sacrifice beyond a small adjustment to your budget. The savings are real—often six figures over the life of the loan. And the reward is a paid-off home years sooner, plus thousands of dollars that stay in your pocket instead of going to the bank. If you have a 30-year mortgage, try it for one year. See how it feels to watch your balance drop faster. It is a small change that makes a big difference.