One of the simplest and most effective ways to save money over the life of your home loan is to pay a little extra on your mortgage each month. Even modest additional payments can shave years off your loan term and save you tens of thousands of dollars in interest. I walk clients through this calculation regularly — and the numbers are almost always eye-opening.

Here’s what drives your mortgage payment and how extra payments can work powerfully in your favor.

What Makes Up Your Monthly Mortgage Payment?

Before you can understand how extra payments help, it’s useful to understand what your payment actually covers. A typical mortgage payment includes several components:

• Principal: The portion of your payment that reduces your actual loan balance. In the early years of a mortgage, this is a surprisingly small slice of your total payment.
• Interest: The cost of borrowing, which makes up the majority of your payment in the early years. Because interest is calculated on your remaining balance, every extra dollar of principal you pay reduces the interest charged in every future month.
• Property taxes: Often escrowed (collected monthly and paid by your lender on your behalf) based on your local tax rate. In Texas, this can be a significant portion of your payment.
• Homeowners insurance: Also typically escrowed. Required by lenders to protect their interest in the property.
• Private Mortgage Insurance (PMI): Required if your down payment was less than 20%. Once your equity reaches 20%, you can request PMI removal — and I encourage clients to do this proactively.

Why Extra Principal Payments Are So Powerful

Mortgages are amortized, meaning your early payments are heavily weighted toward interest. When you pay extra principal, you’re essentially skipping ahead on the amortization schedule — and every month you eliminate saves you the interest that would have been charged on that balance.

For example, on a $300,000 30-year mortgage at 7%, paying an extra $200 per month could save you over $60,000 in interest and shorten your loan by more than 5 years. The exact numbers depend on your loan balance, rate, and how early you start making extra payments.

Fixed vs. Adjustable Rate: Which Makes Extra Payments More Valuable?

Extra payments are valuable on any mortgage, but I find they’re most powerful on fixed-rate loans where the savings are certain and predictable. On an adjustable-rate mortgage, the interest rate — and therefore your savings from extra payments — can shift over time.

Practical Tips for Paying More on Your Mortgage

• Round up your payment: Paying $1,450 instead of $1,387 adds up significantly over time with almost no lifestyle impact.
• Make one extra payment per year: Apply a tax refund or bonus as a lump-sum principal payment each year.
• Switch to biweekly payments: This results in 26 half-payments per year, equivalent to 13 full monthly payments instead of 12.
• Apply windfalls directly to principal: Always specify that extra payments should be applied to principal, not future payments.

See How Much You Could Save

Use the calculator below to see exactly how much time and interest you’d save by increasing your mortgage payment.

USE THE MORTGAGE OVERPAYMENT CALCULATOR