Every extra dollar you send to your mortgage is a dollar you did not invest, save or spend. With mortgage rates near 7%, paying down the loan has become a far more competitive use of cash than it was when rates were 3%. This guide shows what prepaying actually earns, how it compares with investing, how taxes change the math and the order a financial planner would follow before sending the lender a single extra dollar.
Quick answer
Paying extra on your mortgage earns a guaranteed return equal to your interest rate, with no market risk. At 7%, that is hard to beat without taking risk. Before you prepay, build three to six months of emergency savings, capture any employer retirement match and pay off higher rate debt. After that, prepaying tends to win when your mortgage rate is high, you take the standard deduction and you want to retire without a payment. Investing tends to win when your rate is low, you have decades ahead and you can accept market swings. Many households split extra cash between the two.
What return do you get from paying off your mortgage early?
Every dollar of extra principal saves the interest that dollar would have cost for the rest of the loan. That makes the return equal to your mortgage rate, and it is guaranteed. If your rate is 7.03%, the average for a 30 year fixed loan in Freddie Mac’s survey for the week of September 24, 2026, prepaying earns 7.03% a year with no volatility.
Two adjustments refine that figure. If you itemize and deduct mortgage interest, your effective rate is lower, so prepaying earns less after tax. And unlike investments, that return is locked inside the house. You cannot sell a slice of your equity when you need cash.
How much do extra mortgage payments save?
Extra principal payments shorten the loan and cut total interest, especially when you start early.
| $400,000, 30 year fixed at 7.03% | Paid off in | Total interest | Interest saved |
|---|---|---|---|
| Required payment only ($2,669) | 30 years | $560,939 | None |
| Plus $200 a month | About 24 years | $433,401 | $127,537 |
| Plus $300 a month | About 22 years | $391,378 | $169,561 |
| Plus $500 a month | About 19 years | $329,613 | $231,326 |
Your required payment does not change when you prepay. The benefit arrives as an earlier payoff date and a lower balance at every point along the way. After ten years, for example, an extra $300 a month leaves a balance of about $291,500 instead of $343,500.
Is it better to pay off your mortgage or invest?
Compare two households that each have $300 a month to spare on the $400,000 loan above. One invests the $300 every month for 30 years. The other adds it to the mortgage, pays the loan off in about 22 years, then invests the full $2,969 a month it no longer owes the lender. Both spend the same amount every month and own the home free and clear at year 30.
| Hypothetical annual return on investments | Invest $300 a month for 30 years | Prepay, then invest after payoff | Result |
|---|---|---|---|
| 5% | $249,678 | $336,435 | Prepaying ahead by about $86,800 |
| 7% | $365,991 | $365,267 | Roughly even |
| 9% | $549,223 | $397,290 | Investing ahead by about $151,900 |
The break even return sits close to the mortgage rate. Investing only wins if your portfolio beats roughly 7% a year after taxes and fees, and that return is not guaranteed. The table ignores taxes, fees and market volatility, and the returns are illustrations, not predictions. A household that would panic and sell in a downturn, or that would spend rather than invest the $300, is usually better served by the guaranteed option.
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How do taxes affect paying off a mortgage early?
Mortgage interest is deductible only if you itemize, and only on up to $750,000 of debt used to buy, build or substantially improve your home ($375,000 if married filing separately). The 2025 tax law made that limit permanent. It also restored the deduction for mortgage insurance premiums starting with 2026 returns, for itemizers with adjusted gross income up to about $100,000 before the benefit phases out.
For many households, the deduction no longer matters. The 2026 standard deduction is $32,200 for married couples filing jointly and $16,100 for single filers, and taxpayers 65 and older get more, including a new $6,000 senior deduction for 2025 through 2028 that phases out at higher incomes. If your itemized deductions would not exceed your standard deduction, your mortgage interest saves you no tax, and prepaying earns the full interest rate.
Planner’s tip: Compare prepaying with other guaranteed or tax favored options before you decide. A traditional retirement contribution may cut your taxes today, a Roth account may grow tax free, and a health savings account can do both. Your tax professional can show which dollar works hardest for you.
What should you do before paying extra on your mortgage?
- Build an emergency fund. Keep three to six months of expenses in cash, more if your income is variable. Equity cannot pay the bills in a job loss.
- Capture your full employer match. A match is an instant return that no mortgage rate can beat.
- Pay off higher rate debt. Credit cards, personal loans and car loans above your mortgage rate come first.
- Stay on track for retirement. Confirm your retirement contributions are on pace for your goals.
- Then decide how to split extra cash. Weigh your mortgage rate, tax situation, time horizon and comfort with market risk. Splitting extra dollars between prepaying and investing is a sound answer for many households.
Timing matters too. Entering retirement without a mortgage lowers the income you need, which can reduce withdrawals from taxable retirement accounts. Draining those accounts to pay off a mortgage, however, can trigger a large tax bill in a single year. Our guide to getting a mortgage in retirement covers that trade off in more detail.
What is the best way to pay off a mortgage early?
Extra principal each month
Adding a set amount to each payment is simple and saves the most interest per dollar because it reduces the balance early. Make sure your servicer applies it to principal, not to future payments.
Lump sum payments
Bonuses, tax refunds and inheritances can go straight to principal. Paying once a year works nearly as well as paying monthly.
Biweekly payments
Paying half your payment every two weeks results in 26 half payments, or 13 full payments a year, which shortens a 30 year loan by several years. You can get the same effect by adding one twelfth of a payment each month. Avoid third party biweekly programs that charge setup or processing fees.
Recasting
A recast recalculates your payment after a large lump sum, lowering your required payment while keeping your rate and term. On our $400,000 example, a $50,000 payment after five years followed by a recast would lower the payment from about $2,669 to about $2,315. Many conventional loan servicers offer recasting for a fee and a minimum lump sum, while government backed loans generally do not.
Check for prepayment penalties
Conventional loans sold to Fannie Mae and Freddie Mac cannot carry prepayment penalties. Federal rules limit penalties on other qualified mortgages to 2% of the amount prepaid in the first two years, 1% in the third year and none after that. Some non qualified loans, including many investor loans, do include penalties, so read your note before you prepay.
If you have not chosen your loan yet, a shorter term builds the same discipline into the loan itself. Compare the options in our guide to the 15 year and 30 year mortgage, and see how mortgage points change the rate you start with.
Frequently asked questions
Is it smart to pay off your mortgage early?
It can be, once you have an emergency fund, your full employer match and no higher rate debt. Prepaying earns a guaranteed return equal to your mortgage rate, which is attractive when rates are near 7% and you take the standard deduction.
Does paying extra principal lower my monthly payment?
No. Extra principal shortens the loan and reduces total interest, but the required payment stays the same unless you ask your servicer to recast the loan after a large lump sum payment.
Is it better to invest or pay off a mortgage at 7%?
At 7%, prepaying is roughly equivalent to earning 7% risk free. Investing only comes out ahead if your portfolio earns more than that after taxes and fees, which is possible over long periods but not guaranteed. Many households split extra cash between both.
Can I still deduct mortgage interest in 2026?
Yes, if you itemize. Interest on up to $750,000 of acquisition debt is deductible, and mortgage insurance premiums are deductible again starting in 2026 for itemizers below the income limits. Many households take the larger standard deduction instead.
Should I use retirement savings to pay off my mortgage?
Usually not without careful planning. Withdrawals from traditional retirement accounts are taxable, may carry penalties before age 59½ and can push you into a higher bracket. Spreading withdrawals over several years or keeping a modest mortgage is often more tax efficient.
David Arvidson, MBA, CFP®
Founding partner of ARBOR Financial Group, helping clients finance homes since 1996. MBA, University of Notre Dame. CFP® professional since 2013.
NMLS #298701
DRE #01236224
Licensed in 21 states and DC
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Sources and official resources
- Freddie Mac: Primary Mortgage Market Survey
- IRS Publication 936: Home Mortgage Interest Deduction
- IRS: Tax inflation adjustments for tax year 2026
- IRS: The enhanced deduction for seniors
- Public Law 119-21
- CFPB: Regulation Z section 1026.43 (prepayment penalties)
- Fannie Mae Selling Guide: Responsible lending practices (prepayment penalties)
Information checked September 27, 2026. Rates, loan limits, tax rules and program guidelines change, so confirm current terms before you rely on them.
This article is for general education only and is not a loan offer, commitment to lend, or individualized investment, tax or legal advice. Rates, terms, fees and programs vary by lender and are subject to change without notice. All loans are subject to credit approval, underwriting guidelines and property eligibility. Examples are illustrations, not quotes or predictions. David Arvidson, NMLS #298701, DRE #01236224. ARBOR Financial Group is a DBA of The Turnkey Foundation Inc., NMLS #236669 (NMLS Consumer Access). Equal Housing Opportunity. CFP® and CERTIFIED FINANCIAL PLANNER® are certification marks owned by Certified Financial Planner Board of Standards, Inc.
