What happens when you make one extra mortgage payment per year

Making one extra mortgage payment per year shortens the life of your loan and reduces the total interest you pay. Most commonly, people do this by splitting their regular monthly payment in half and paying that half-payment every two weeks instead of one full payment once a month. Over time, this adds up to one extra full payment annually.

The math is straightforward: a standard year has 52 weeks, so 26 bi-weekly payments equal 13 monthly payments instead of 12. That extra payment goes directly toward principal, which means less of your future payments go toward interest. On a 30-year mortgage, this strategy can shorten your loan by several years and save tens of thousands of dollars in interest, depending on your loan amount and interest rate.

The key is that the extra payment must go toward principal, not just sit in an escrow account. When you set this up, confirm with your lender that bi-weekly payments are applied as you intend — some lenders hold the half-payment until a full month's worth arrives, which defeats the purpose.

Key Takeaways

  • One extra mortgage payment per year reduces your loan term by several years and cuts total interest paid, with the exact savings depending on your loan amount and rate.
  • The most common method is bi-weekly payments: pay half your monthly payment every two weeks, which totals 13 payments per year instead of 12.
  • The extra payment must be applied to principal when ready, not held in an account until a full month's payment accumulates.
  • You can also make one lump-sum extra payment once per year, though bi-weekly payments tend to be easier to maintain as a habit.
  • Not all lenders offer bi-weekly payment plans, so you may need to make the extra payment manually or set up automatic transfers to your mortgage account.

How bi-weekly payments work in practice

With bi-weekly payments, you divide your monthly mortgage payment by two and pay that amount every 14 days. If your monthly payment is $1,200, you would pay $600 every two weeks. Over a calendar year, you make 26 of these payments, which equals 13 full monthly payments instead of 12.

The advantage of this method is that it becomes automatic and requires no extra decision-making. Once you set it up with your lender or through your bank's bill pay system, the payments happen on schedule without you having to remember to send in extra money. Many people find this easier to stick with than trying to scrape together a lump sum once a year.

However, not every lender supports bi-weekly payments directly. Some will accept them but hold the half-payment until they receive a full month's worth, which delays the principal reduction. Before you commit to this method, contact your mortgage servicer and ask whether they explore bi-weekly payments when ready to principal or if they hold and batch them.

Making one lump-sum payment instead

Instead of splitting payments, you can make one extra full payment once per year as a lump sum. This works well if you receive a bonus, tax refund, or other windfall and want to put it toward your mortgage. The effect is identical to bi-weekly payments — one extra payment per year reduces principal and shortens your loan.

The downside is that lump-sum payments require you to remember to make them and to have the cash available when you decide to pay. If you miss a year, you lose that year's benefit. Bi-weekly payments, by contrast, happen automatically and consistently.

When you make a lump-sum payment, specify in writing or in the payment memo that it should go toward principal, not toward your next month's regular payment. Some servicers will automatically explore extra payments to principal, but others default to advancing your next payment date unless you tell them otherwise.

How much interest you actually save

The total interest saved depends on three factors: your loan amount, your interest rate, and how many years remain on your mortgage. On a $300,000 mortgage at 6.5% interest with 30 years remaining, one extra payment per year can save roughly $40,000 to $50,000 in interest and shorten the loan by about four to five years. On a smaller loan or a higher rate, the savings scale accordingly.

You can calculate your specific savings using a mortgage payoff calculator available from most lenders' websites or from free financial tools online. Enter your current loan balance, interest rate, remaining term, and the extra payment amount to see how much time and interest you would save.

Keep in mind that these savings assume you continue making the extra payment consistently for the life of the loan. If you make extra payments for a few years and then stop, you still benefit from the principal reduction you achieved, but you do not realize the full long-term savings.

When extra payments make sense financially

Making extra mortgage payments is most valuable when your mortgage interest rate is higher than the return you could earn elsewhere. If your mortgage is at 6% and you could earn 4% in a savings account, paying down the mortgage saves you the difference. However, if you have high-interest debt like credit cards at 18% or 20%, paying that down first usually makes more financial sense.

Extra mortgage payments also make sense if you want to own your home free and clear by a specific date — such as before retirement — and you have the cash flow to support them without cutting into emergency savings. The trade-off is that money going toward extra mortgage payments is not available for other goals or emergencies.

If you are uncertain whether extra payments fit your situation, consider your overall financial picture: do you have three to six months of expenses in an emergency fund? Are you saving for retirement? Do you have other debts? Answering these questions first helps you decide whether extra mortgage payments are the right move.

Setting up bi-weekly payments with your lender

To start bi-weekly payments, contact your mortgage servicer directly — the company that sends you your monthly statement. Ask whether they offer a bi-weekly payment plan and what the process is. Some servicers have a straightforward form you fill out; others may charge a small setup fee, though many do not.

If your lender does not offer bi-weekly payments, you can set up automatic transfers from your bank account to your mortgage servicer's payment address. Use your bank's bill pay system to schedule a payment for half your monthly amount every two weeks. Make sure the payment reaches your servicer on time and that you include your loan number so the payment is credited correctly.

Alternatively, you can make one manual extra payment per year by sending a check or making an online payment directly to your servicer. Include a note or use the payment memo to specify that the payment should go toward principal. Keep a copy of the confirmation for your records.

What to watch out for

The most common mistake is assuming your lender will automatically explore extra payments to principal. Some servicers default to advancing your next payment date instead, which means you pay on time but do not reduce your loan term. Always confirm in writing how your extra payments will be handled before you start.

Another pitfall is making extra payments while carrying high-interest debt. If you have credit card balances at 15% or higher, paying those down first saves you more money than paying down a mortgage at 5% or 6%.

Finally, do not let extra mortgage payments prevent you from building an emergency fund. If you do not have three to six months of expenses saved, prioritize that before committing to extra mortgage payments. An emergency fund protects you if you lose income or face an unexpected expense.

Frequently Asked Questions

Can I stop making extra payments if I need the money later?

Yes. Extra payments reduce your principal balance permanently, so you keep that benefit even if you stop. However, your monthly payment amount does not change unless you refinance or modify your loan. You straightforward return to making your regular monthly payment without the extra amount.

Do extra mortgage payments hurt my credit score?

No. Paying more than the minimum required actually helps your credit by showing you manage debt responsibly. Your credit score reflects whether you pay on time and how much debt you carry relative to your limits — extra payments improve both factors.

What if I want to make extra payments but my lender charges a fee?

Some lenders charge a small fee for bi-weekly payment plans, typically $50 to $100 per year. Calculate whether the interest savings exceed the fee. On most loans, the savings far outweigh the cost, but if your loan is small or your rate is low, the fee might not be worth it.

Does making extra payments affect my mortgage interest tax deduction?

No. Your tax deduction is based on the total interest you paid during the year, not on how many payments you made. Extra payments reduce your total interest over the life of the loan, which eventually reduces your deduction in later years, but they do not change how you report interest in the current year.

Can I make extra payments on an adjustable-rate mortgage?

Yes. Extra payments reduce principal on any mortgage type. However, on an adjustable-rate mortgage, your payment amount may change when your rate adjusts, so the benefit of extra payments is less predictable. You still reduce principal and save interest, but your long-term savings depend partly on future rate changes.