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Extra Mortgage Payments: How One Payment a Year Saves Thousands

Small extra payments on your mortgage can shave years off your loan and save tens of thousands in interest. Here's the math.

February 20, 20263 min read

The Power of Extra Payments

Most homeowners pay exactly what's required each month and never think twice. But making extra payments — even small ones — is one of the most reliable ways to build wealth faster and save a staggering amount on interest.

Why? Because in the early years of a mortgage, most of your payment goes to interest, not principal. Extra payments go directly to principal, reducing the balance that future interest is calculated on.

The Math: One Extra Payment Per Year

On a $400,000 mortgage at 7% for 30 years:

Strategy Total Interest Payoff Time Interest Saved
Normal payments $558,036 30 years
1 extra payment/year $454,871 25 years $103,165
$200 extra/month $395,403 22.5 years $162,633
$500 extra/month $298,547 18.5 years $259,489

One extra payment per year saves over $100,000 and cuts 5 years off your mortgage.

Strategies for Making Extra Payments

Biweekly Payments

Instead of 12 monthly payments, make 26 half-payments (every two weeks). This naturally results in 13 full payments per year — one extra — without feeling the pinch.

Round Up

If your payment is $2,147/month, round up to $2,200 or $2,300. The extra $53–$153 barely dents your monthly budget but compounds significantly over time.

Annual Lump Sum

Use your tax refund, bonus, or year-end savings to make one large extra payment each year. Even a single $2,000 extra payment per year makes a meaningful difference.

Pay an Extra $100–$200/Month

Set up an automatic additional payment. Many lenders let you specify that extra payments go to principal only.

Important: Principal-Only Payments

When making extra payments, ensure they're applied to principal only, not prepaying future payments. Some lenders will advance your due date instead of reducing the balance — contact them to confirm proper application.

When Extra Payments DON'T Make Sense

Extra mortgage payments aren't always the optimal move:

  • High-interest debt exists — pay off credit cards (18–25% APR) before a 7% mortgage
  • No emergency fund — build 3–6 months of savings first
  • Employer match not captured — a 50%+ guaranteed return beats 7% mortgage payoff
  • Low mortgage rate — if your rate is 3–4% (from 2020–2021 era), investing at 8%+ historical returns is mathematically better
  • Tax deduction matters — mortgage interest is deductible if you itemize (though fewer people benefit from this after the 2017 standard deduction increase)

The Psychological Benefit

Beyond the math, paying off a mortgage early provides:

  • Peace of mind — eliminating your largest monthly expense
  • Freedom — lower cost of living means more career flexibility
  • Security — you own your home outright, reducing financial vulnerability
  • Simplicity — one fewer bill to worry about forever

A Balanced Approach

Many financial planners recommend a middle path:

  1. Capture full employer match on 401(k)
  2. Pay off high-interest debt
  3. Build emergency fund
  4. Then split extra cash: half to extra mortgage payments, half to investments

This balances guaranteed return (paying off mortgage) with potentially higher returns (investing).

Key Takeaway

Extra mortgage payments are boring but powerful. You don't need to make huge lump sums — even an extra $100/month adds up to tens of thousands in savings. The earlier you start, the more interest you avoid. Run the numbers to see what's possible for your specific loan.

Put this into practice

Use our interactive Extra Payments Calculator to run the numbers for your situation.

Open Extra Payments Calculator

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