Paying off a mortgage early is one of the most impactful financial moves a homeowner can make. On a typical $350,000 mortgage at 6.5% for 30 years, the total interest over the life of the loan is approximately $446,000 — more than the original loan amount. Even modest extra payments can cut that figure by $50,000 to $150,000 and shave years off your payoff date.
The key is understanding which strategies work best for your situation. Some methods require consistent monthly discipline, others involve one-time actions, and a few can be combined for compounding effect.
Strategy 1: Make Biweekly Payments
Instead of making one monthly payment, split it in half and pay every two weeks. This simple change results in 26 half-payments per year — the equivalent of 13 full monthly payments instead of 12. That one extra payment per year goes entirely toward principal.
On a $350,000 loan at 6.5%, switching to biweekly payments saves approximately $68,000 in interest and pays off the mortgage about 4.5 years early. You never feel the extra payment because each biweekly amount is half your normal monthly payment.
Not all lenders process biweekly payments directly. Some require you to enroll in a biweekly program (watch for fees) or simply accumulate the half-payments and apply them monthly. An alternative is to divide your monthly payment by 12 and add that amount to each payment. On a $2,212 monthly payment, add $184 ($2,212 divided by 12) each month for the same effect as biweekly payments.
Use our extra payment calculator to see exactly how biweekly payments affect your specific loan.
Strategy 2: Round Up Your Monthly Payment
If your monthly payment is $1,897, round it up to $2,000. That $103 extra per month, applied to principal, saves approximately $28,000 in interest and pays off a $300,000 loan at 6.5% about 2.5 years early.
The beauty of rounding up is its simplicity. You set it once in your autopay and forget about it. The amount is small enough that most budgets absorb it without pain, but over 25+ years the compound effect is substantial.
If rounding to the nearest hundred is too much, try rounding to the nearest fifty. Even $50 extra per month saves over $18,000 on a typical 30-year mortgage.
Strategy 3: Apply Windfalls to Principal
Tax refunds, work bonuses, inheritance checks, insurance settlements, and other irregular income represent opportunities to make lump sum principal payments. The earlier in the mortgage you apply these, the greater the savings.
According to IRS data, the average federal tax refund in 2025 was approximately $3,100. Applying that single payment to principal in year 5 of a $300,000 mortgage at 6.5% saves about $8,500 in lifetime interest. Apply that same refund every year for 10 years, and the total savings exceed $55,000.
When sending a lump sum payment, always specify that it should be applied to principal — not future payments. Some lenders default to advancing your due date rather than reducing principal unless you explicitly request otherwise.
Strategy 4: Refinance to a Shorter Term
If interest rates drop or your credit improves, refinancing from a 30-year to a 15-year mortgage dramatically reduces total interest. According to Freddie Mac Primary Mortgage Market Survey data, 15-year rates typically run 0.5% to 0.75% lower than 30-year rates, amplifying the savings.
Run the numbers for your situation: Use our free extra payment calculator to see exactly how much time and interest you save with additional payments.
On a $300,000 loan, refinancing from a 30-year at 6.5% to a 15-year at 5.85% increases your monthly payment by approximately $725 but saves roughly $267,000 in total interest. The trade-off is higher monthly payments, so this strategy works best if your income has increased since you originally took out the mortgage.
Even if rates have not dropped, refinancing from a 30-year to a 20-year loan offers a middle ground with more moderate payment increases. Use our refinance calculator to model different scenarios.
Strategy 5: Recast Your Mortgage
Recasting is one of the least-known mortgage strategies. After making a large lump sum payment toward your principal (typically $5,000 or more), you ask your lender to reamortize your remaining balance over the remaining term. This reduces your monthly payment while keeping the same interest rate and term.
Recasting differs from refinancing in several important ways: there is no credit check, no appraisal, no closing costs (just a small processing fee of $150 to $500), and the interest rate stays the same. It simply recalculates your payment based on the lower balance.
This strategy is particularly useful after receiving a large sum (selling another property, receiving an inheritance, or saving a significant amount). Rather than paying off a chunk and continuing with the same high payment, recasting reduces the payment so you can redirect the savings toward other financial goals.
Not all loan types support recasting. Conventional loans typically allow it, but FHA and VA loans generally do not. Check with your lender about their recasting policy and minimum lump sum requirements.
Strategy 6: Eliminate PMI and Redirect the Savings
If you bought your home with less than 20% down, you are paying Private Mortgage Insurance. According to MGIC and Radian PMI rate cards, PMI typically costs 0.5% to 1.5% of the original loan amount per year — that is $125 to $375 per month on a $300,000 loan.
Under the Homeowners Protection Act, your lender must automatically cancel PMI when your loan balance reaches 78% of the original home value. You can also request cancellation at 80%. Once PMI is removed, take that entire monthly savings and apply it as an extra principal payment. You were already used to paying that amount, so your budget does not change, but your mortgage payoff accelerates dramatically.
If your home has appreciated significantly since purchase, you may be able to request early PMI removal by getting a new appraisal that shows your loan-to-value ratio is below 80%. Check your lender's specific requirements. Use our PMI calculator to estimate when your PMI can be removed.
Strategy 7: The Dollar-a-Month Method
This strategy starts small and builds momentum. In month 1, add $1 extra to your payment. In month 2, add $2. Month 3, add $3. By month 12, you are adding $12 per month. In year 2, continue the pattern from $13. By year 5, you are adding $60 per month.
The dollar-a-month method works psychologically because the increases are so gradual that your budget adjusts without strain. Over a 30-year mortgage, this approach saves approximately $35,000 to $50,000 in interest depending on your loan amount and rate. The key is consistency — set it up in a spreadsheet and adjust your payment each month.
Should You Pay Off Your Mortgage or Invest?
This is the most common question homeowners ask when considering extra payments. The answer depends on your mortgage rate, expected investment returns, and risk tolerance.
If your mortgage rate is above 6%, extra payments provide a guaranteed, risk-free return equal to your interest rate. No investment can guarantee 6%+ returns. In this case, paying down the mortgage is often the safer and mathematically favorable choice.
If your rate is below 4-5%, investing the difference in a diversified portfolio may earn more over time. The historical average return of the S&P 500 is approximately 10% annually (7% after inflation), according to data from NYU Stern. However, investment returns are not guaranteed, while mortgage interest savings are.
Many financial advisors, including those at Vanguard and Fidelity, recommend a balanced approach: maximize employer-matched retirement contributions first (that is an immediate 50-100% return), then split additional savings between extra mortgage payments and investment accounts.
Combining Strategies for Maximum Impact
The most effective approach combines multiple strategies:
1. Switch to biweekly payments (saves 4.5 years) 2. Round up each biweekly payment to the nearest $50 (saves an additional 1-2 years) 3. Apply all tax refunds and bonuses to principal (saves 1-3 years depending on amounts) 4. When PMI is removed, redirect the full PMI amount to extra principal
Using all four strategies on a $350,000 mortgage at 6.5% could pay off the loan in 18-20 years instead of 30 and save $150,000 to $200,000 in interest. Enter your numbers into our extra payment calculator to see your personalized savings.