How to Pay Off Your Mortgage Early (And Save Thousands in Interest)

Your mortgage is probably the largest debt you'll ever carry — and the most expensive if you let it run its full term. A $350,000 mortgage at 7% over 30 years costs you $488,000 in interest alone. By the time you finish paying it off, you've paid nearly twice the original loan amount.

Paying off your mortgage early can save you tens of thousands of dollars and eliminate your single largest monthly expense years ahead of schedule. Here are five concrete strategies to do it — plus an honest look at the most common objection.

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Strategy 1: Make Extra Principal Payments

The simplest way to pay off your mortgage early is to pay more than the minimum each month — specifically, directing extra payments toward principal.

When you make a regular mortgage payment, it's split between interest and principal according to your amortization schedule. In the early years of a 30-year mortgage, roughly 70–80% of each payment goes toward interest, not principal. Extra principal payments bypass this ratio entirely — every extra dollar reduces your loan balance directly, which reduces future interest charges.

How to do it right: on your payment, specify that the extra amount is for "principal only." Without that designation, your servicer may apply it to next month's payment instead.

Example: On a $350,000 mortgage at 7%, adding just $200/month in extra principal payments reduces the loan term by about 5 years and saves approximately $73,000 in interest. Adding $500/month extra saves over $135,000 and cuts 9 years off the term.

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Strategy 2: Switch to Biweekly Payments

Instead of making 12 monthly mortgage payments per year, switch to biweekly payments of half your monthly amount. The result: you make 26 half-payments per year — the equivalent of 13 full monthly payments instead of 12.

That one extra payment per year doesn't sound like much, but compounded over decades, it's significant.

Example: On that same $350,000 mortgage at 7%, biweekly payments result in paying off the loan about 4–5 years early and saving approximately $70,000 in interest over the life of the loan — with essentially no change to your monthly cash flow.

How to set it up: call your mortgage servicer and ask if they offer a biweekly payment plan. Some do it for free; others charge a setup fee. Alternatively, simply divide your monthly payment by 12 and add that amount to each monthly payment — the DIY version accomplishes roughly the same result.

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Strategy 3: Apply Lump Sums to the Principal

Tax refunds, bonuses, inheritance, side income, and the proceeds from selling things are all opportunities to make lump-sum principal paydowns.

Even a single $5,000 lump sum payment in the early years of your mortgage saves far more than $5,000 over the life of the loan — because you're eliminating principal that would have accrued decades of interest.

Example: A $5,000 lump sum applied to a $350,000 mortgage at 7% in year 5 reduces total interest paid by over $20,000 over the remaining term. That's a 4× return on your money — just from not paying the bank.

The key is applying lump sums early and often, when the interest savings are largest. And again, always specify "principal only" when submitting the payment.

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Strategy 4: Refinance to a Shorter Term

If your current mortgage is at a high interest rate, or if you want a structural commitment to faster payoff, refinancing to a 15-year or 20-year mortgage is a powerful option.

A 15-year mortgage comes with a lower interest rate (often 0.5%–0.75% lower than a 30-year) and a mandatory accelerated payoff. The tradeoff: your monthly payment will be higher.

Example: Refinancing a $300,000 mortgage from 7% on a 30-year to 6.25% on a 15-year raises your monthly payment by about $500–$700 but saves approximately $180,000–$200,000 in total interest over the loan life.

Refinancing makes sense when: you can secure a meaningfully lower rate, you plan to stay in the home for at least 5 years (to recoup closing costs), and the higher monthly payment is sustainable in your budget.

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Strategy 5: Make One Extra Payment Per Year

This is the easiest method with no change to your regular cash flow. Simply make one full additional mortgage payment each year, directed entirely toward principal.

You can fund this by setting aside one-twelfth of your monthly payment each month in a separate account, then making the extra payment in December. Or use a year-end bonus, a tax refund, or any windfall.

Example: One extra payment per year on a $350,000 mortgage at 7% over 30 years reduces the loan term by approximately 4–5 years and saves roughly $65,000–$70,000 in interest.

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Addressing the Biggest Objection: Investing vs. Paying Off the Mortgage

The most common counterargument to early mortgage payoff: "The stock market returns 8–10% historically. If your mortgage rate is 7%, you'd theoretically do better investing the extra money."

This is mathematically valid — and practically complicated.

The case for investing: If you have a 30-year mortgage at 3–4% (rates many homeowners locked in during 2020–2022), investing extra money in a diversified index fund earning 7–10% historically makes sense. The spread is meaningful and in your favor.

The case for paying off the mortgage: A guaranteed 7% return (eliminating a 7% interest debt) is risk-free. Market returns are not. If your mortgage rate is 6.5% or higher, the case for extra payments gets much stronger — especially as you approach retirement. There's also a powerful psychological and practical benefit to owning your home outright: complete elimination of your largest monthly expense, which reduces the income you need to retire comfortably.

The practical answer: Do both. Make your regular retirement contributions (especially to capture any employer match), build your emergency fund, and then split remaining cash between extra mortgage payments and additional investing. You don't have to choose one or the other. The right allocation depends on your mortgage rate, your timeline to retirement, and your personal risk tolerance.

The bottom line: at today's higher mortgage rates, paying off your mortgage early is one of the most reliable, risk-free wealth-building moves you can make.