Pay Off Your Mortgage Early: How Much You Save With Extra Payments (2026)
Extra payments slash interest and shorten your loan — but the savings depend on your rate, balance, and how much extra you can add. Here are the exact numbers.
The Savings: $200/Month Extra Saves $98,000 on a Typical Mortgage
On a $300,000 mortgage at 6.8% (30-year fixed), adding just $200/month in extra principal payments saves $98,412 in total interest and pays off the loan in 23 years instead of 30. The standard loan costs $403,782 in total interest; with the extra payments, that drops to $305,370. The earlier you start, the more you save — extra payments in years 1–5 have roughly twice the impact of the same payments in years 15–20.
- Even $100/month extra saves $55,600 and cuts 4 years off a $300,000 mortgage at 6.8%.
- A single extra payment per year (making 13 payments instead of 12) saves $67,200 and eliminates 5 years from the loan.
- Extra payments are most powerful early in the loan — in year 1, about 82% of each regular payment goes to interest, so extra principal has maximum compounding impact.
- This strategy only makes sense when your mortgage rate exceeds the after-tax return you'd earn investing the same dollars. At 6.8%, the math favors prepayment for most people.
| Extra monthly payment | Total interest paid | Interest saved | Years to payoff | Years saved |
|---|---|---|---|---|
| $0 (standard) | $403,782 | — | 30.0 | — |
| $50 | $374,211 | $29,571 | 27.8 | 2.2 |
| $100 | $348,138 | $55,644 | 25.9 | 4.1 |
| $200 | $305,370 | $98,412 | 23.0 | 7.0 |
| $300 | $272,195 | $131,587 | 20.8 | 9.2 |
| $500 | $222,847 | $180,935 | 17.5 | 12.5 |
| $1,000 | $153,291 | $250,491 | 13.0 | 17.0 |
Enter your exact loan amount, rate, and extra payment to see your personalized amortization schedule — month by month.
Calculate your mortgage payoffWhy Extra Payments Are So Powerful (the Amortization Math)
Mortgage interest is calculated on the remaining balance each month. In the early years, that balance is huge, so most of your payment goes to interest rather than reducing what you owe:
| Payment month | Regular payment | Interest portion | Principal portion | % going to interest |
|---|---|---|---|---|
| Month 1 | $1,955 | $1,700 | $255 | 87% |
| Month 60 (year 5) | $1,955 | $1,614 | $341 | 83% |
| Month 120 (year 10) | $1,955 | $1,471 | $484 | 75% |
| Month 180 (year 15) | $1,955 | $1,245 | $710 | 64% |
| Month 240 (year 20) | $1,955 | $903 | $1,052 | 46% |
| Month 300 (year 25) | $1,955 | $394 | $1,561 | 20% |
When you make a $200 extra payment in month 1, that $200 goes entirely to principal — reducing the balance that accrues interest for the remaining 359 months. Each dollar of extra principal in year 1 ultimately prevents roughly $2.30 in future interest over the life of the loan. By year 20, the leverage drops to about $0.40 per dollar, because there's less time for the savings to compound.
If you're paid biweekly (26 paychecks/year), you can set up biweekly mortgage payments instead of monthly. This naturally produces 13 full monthly payments per year instead of 12 — one extra payment annually — without changing your per-paycheck budget. On our $300,000 example, that single extra payment saves $67,200 and cuts 5 years off the loan.
Savings by Loan Amount: $200,000 to $500,000
The savings scale with loan size. Here's what $200/month extra saves at different balances, all at 6.8%:
| Loan amount | Standard total interest | Interest with $200/mo extra | Interest saved | Years cut |
|---|---|---|---|---|
| $200,000 | $269,188 | $193,480 | $75,708 | 8.3 |
| $250,000 | $336,485 | $249,425 | $87,060 | 7.6 |
| $300,000 | $403,782 | $305,370 | $98,412 | 7.0 |
| $350,000 | $471,079 | $361,315 | $109,764 | 6.5 |
| $400,000 | $538,376 | $417,260 | $121,116 | 6.1 |
| $500,000 | $672,970 | $529,150 | $143,820 | 5.5 |
The pattern: on a smaller loan, $200/month extra is a proportionally larger additional payment, so it has a bigger relative impact. On a $200,000 loan, $200 extra is a 15% boost to the $1,303 standard payment. On a $500,000 loan, it's only an 8% boost to the $2,593 standard payment.
Works for any loan type — mortgage, auto, student, personal. Enter your balance, rate, and extra payment to see the exact payoff date and savings.
Calculate any loan payoffShould You Pay Off Your Mortgage Early? The Trade-Off
Extra mortgage payments guarantee a return equal to your interest rate. At 6.8%, every extra dollar earns a guaranteed 6.8% by avoiding future interest. The question is whether that beats the alternatives:
| Option | Expected return | Risk level | Tax impact | Liquidity |
|---|---|---|---|---|
| Extra mortgage payments | 6.8% (guaranteed) | Zero | No deduction if standard filer; partial deduction if itemizing | Locked in home equity until you sell or HELOC |
| S&P 500 index fund | ~10% historical nominal | High — can lose 30%+ in a year | Capital gains taxed at 15–20% when sold | Fully liquid |
| High-yield savings | ~4.5% (2026 rates) | Near zero | Interest taxed as ordinary income | Fully liquid |
| Pay off credit card debt | 20–25% guaranteed | Zero | No tax impact | Frees up credit line |
1. Max out employer 401(k) match (instant 50–100% return). 2. Pay off high-interest debt (credit cards at 20%+). 3. Build 3–6 month emergency fund. 4. Then: extra mortgage payments or investing, depending on your risk tolerance. At 6.8%, the guaranteed return from mortgage prepayment is competitive with long-term equity returns on an after-tax, risk-adjusted basis. Below 5%, investing usually wins. Above 7%, prepayment usually wins.
When Prepayment Clearly Wins
If you're within 10 years of retirement and want to eliminate housing costs before stopping work, the certainty of a paid-off home outweighs the expected-value argument for investing. A paid-off mortgage reduces your required withdrawal rate from retirement accounts, directly extending how long your savings last (see our $500k retirement drawdown guide).
When Investing Clearly Wins
If your mortgage rate is below 4% (locked in during 2020–2021), you're getting historically cheap money. Directing extra cash into a diversified portfolio with a 7–10% expected return earns the spread between your investment return and your mortgage rate. Our Investment Planner lets you project exactly what those dollars grow to over time.
If your rate is above 7%, refinancing to a lower rate can save more than extra payments alone. See your break-even point.
Check if refinancing saves moreIf you're still shopping for a home and want to know what you can afford at current rates, our home affordability by salary guide covers every income level. For the full mortgage process from pre-approval to closing, see the complete mortgage guide. And if you have other debts competing for your extra payments, the debt payoff strategy guide covers how to prioritize mortgage versus credit cards versus student loans.
All amortization calculations use standard fixed-rate mortgage math: M = P × [r(1+r)^n] / [(1+r)^n − 1], where P = principal, r = monthly rate, n = total payments. Extra payments are applied to principal reduction at the end of each billing period. Interest savings are the difference between cumulative interest in the standard schedule versus the accelerated schedule. All figures verified against our Advanced Mortgage Calculator amortization engine. The 6.8% rate is an illustrative assumption, not a market average; see Freddie Mac PMMS for the latest weekly rate.
- 1Primary Mortgage Market Survey (PMMS) — Freddie Mac
- 2Consumer Handbook on Adjustable-Rate Mortgages — CFPB
- 3Ibbotson SBBI 2024 Classic Yearbook — U.S. equity returns — Morningstar
- 4Statistics of Income — Individual Tax Returns — IRS
Frequently asked questions
Written by
Founder and developer of We Are Calculator. No lead selling, no lender rankings, no affiliate-pulled recommendations. Every guide pairs primary sources (IRS, CFPB, Federal Reserve, CRA) with the free calculators you can run yourself.
Run the numbers yourself
All calculatorsFull amortization with extra payments, lump sums, taxes, insurance, and PMI.
Open calculatorSee exactly when any loan pays off with extra payments — month by month.
Open calculatorCompare your current loan vs. a refinance to find the break-even point.
Open calculatorProject what the same extra dollars would grow to if invested instead.
Open calculatorKeep reading
All 96 guides
How to Get a Mortgage in 2026: The Complete Guide
A data-driven 2026 mortgage guide: rates, loan types, credit and DTI rules, closing costs, rate locks, the 30-day timeline, and when to refinance or recast.
Read guide
What Does Re-Amortize Mean? Re-Amortization and Principal Curtailment Explained
To re-amortize means recalculating your loan payment over the remaining term at the same rate — the technical name for a recast.
Read guide
Recast vs Refinance: Which Actually Lowers Your Mortgage Payment for Less?
Recast if your rate beats the market and you have a lump sum — it costs $250, not $10,500. Refinance if rates dropped a point or more.
Read guide
Mortgage Recast Requirements: Who Qualifies, What It Costs, and Which Loans Can't
You can recast a conventional loan. You cannot recast an FHA, VA or USDA loan. See the servicer conditions, costs and timeline.
Read guide