What a principal-only payment is and why you might make one
A principal-only payment is extra money you send to your lender that goes entirely toward reducing the loan balance, not toward interest or your regular monthly payment. When you make your standard mortgage payment, part of it covers interest, part covers principal, and part may cover taxes and insurance. A principal-only payment skips all of that—every dollar reduces what you owe.
Homeowners make these payments for one reason: to pay off the mortgage faster and spend less on interest over the life of the loan. The earlier you reduce the principal, the less interest the lender can charge on that smaller balance in future months. Over 15 or 30 years, even occasional principal-only payments add up.
Key Takeaways
- Principal-only payments must be sent separately from your regular payment and clearly labeled, or your lender may apply them to next month's payment instead.
- Making principal-only payments reduces the total interest you pay and shortens your loan term, but does not lower your monthly payment amount unless you refinance.
- Your lender may charge a fee for principal-only payments or require a minimum amount, so check your loan documents or call before sending one.
- Principal-only payments work best if you have stable income and an emergency fund, because your monthly payment obligation stays the same even after you've paid down principal.
How principal-only payments are applied to your loan
The mechanics depend on how you send the payment and how your lender processes it. If you send a check or make an online payment without a note, many lenders will assume it's an early payment on next month's bill. To ensure the money goes to principal only, you must contact your lender first and ask for their procedure—some require a written request, others accept a note with the check, and some have a specific online option.
Once the lender receives and correctly applies a principal-only payment, it reduces your loan balance immediately. Your next regular payment is still due on the same date and in the same amount. The lower principal means slightly less of your next payment goes to interest and slightly more goes to principal, but your monthly payment itself does not change unless you refinance or modify the loan.
The real impact on interest and loan term
The benefit of principal-only payments compounds over time. On a $300,000 mortgage at 6.5% interest over 30 years, your regular monthly payment is roughly $1,896. If you send an extra $200 toward principal each month, you'll pay off the loan in about 25 years instead of 30 and save roughly $60,000 in interest. A single $5,000 principal-only payment early in the loan saves less interest than the same payment made later, because the balance is higher and the interest rate applies to a larger amount for longer.
The catch: your monthly payment obligation does not shrink. You still owe $1,896 every month. If your income drops or an emergency hits, you cannot reduce that payment just because you've paid down principal. This is why financial advisors often recommend having an emergency fund before making principal-only payments—you're choosing to reduce flexibility in exchange for long-term savings.
Fees and restrictions your lender may impose
Not all lenders treat principal-only payments the same way. Some charge a fee—typically $15 to $50—for processing a payment that doesn't follow the standard schedule. Others require a minimum amount, such as $500 or $1,000, to accept a principal-only payment. A few lenders have no restrictions at all. Your loan documents or lender's website should state the policy, but calling to confirm takes five minutes and prevents mistakes.
Some loans, particularly older ones or those with specific terms, may have prepayment penalties—a fee charged if you pay down principal faster than the loan schedule allows. These are less common now, but they exist. If your loan was issued before 2010 or has unusual terms, ask your lender whether a prepayment penalty applies before sending a large principal-only payment.
When principal-only payments make sense for your situation
Principal-only payments work best if you have a stable income, an emergency fund covering three to six months of expenses, and no high-interest debt like credit cards. If you're living paycheck to paycheck or carrying credit card balances at 15% to 20% interest, paying down a 5% mortgage faster is usually the wrong priority. The math favors eliminating high-interest debt first.
They also make sense if you plan to stay in the home long enough to benefit from the interest savings. If you're likely to sell or refinance within five years, the savings may not justify the reduced flexibility. And they're worth considering if you receive a bonus, tax refund, or inheritance and want to put that money to work without taking on new debt.
How to set up and track principal-only payments
Start by calling your lender's customer service line and asking: "What is your procedure for making a principal-only payment?" Write down the answer, including any fees, minimum amounts, and the exact mailing address or online method. Ask whether they accept a note with a check or require a separate form. Some lenders have a specific payment code you enter online; others need a written request on file.
When you send the payment, include a letter or note stating: "This payment is for principal only and should not be applied to my regular monthly payment." Keep a copy of the letter and the cancelled check or payment confirmation. After the payment posts—usually within 7 to 10 business days—log into your account and verify that the principal balance decreased and your regular payment due date did not change. If something looks wrong, contact the lender immediately.
Alternatives if principal-only payments don't fit your budget
If you want to pay off your mortgage faster but can't afford separate principal-only payments, you have other options. The simplest is to increase your regular monthly payment by a fixed amount each month—say, an extra $100 or $200. This accomplishes the same goal without the complexity of separate transactions, and most lenders accept it without special procedures.
Another route is to refinance to a shorter loan term, such as moving from a 30-year to a 15-year mortgage. This raises your monthly payment but locks in a faster payoff and often comes with a lower interest rate. A third option is to make one large principal-only payment per year—perhaps with a tax refund or bonus—rather than monthly payments. This reduces the number of transactions and fees while still cutting interest over time.
Frequently Asked Questions
Will a principal-only payment lower my monthly payment?
No. Your monthly payment stays the same unless you refinance or modify your loan. The principal-only payment reduces your total loan balance and the interest you'll pay over time, but it does not change the amount due each month. If you want a lower monthly payment, you would need to refinance.
Can I make a principal-only payment if I'm behind on my mortgage?
Most lenders will not accept a principal-only payment if you're behind. They'll apply any payment you send to the oldest missed payment first. Contact your lender to discuss your options—forbearance, a loan modification, or a repayment plan—before attempting a principal-only payment.
What happens if my lender applies my principal-only payment to next month's bill by mistake?
Call the lender immediately and ask them to correct it. Explain that you intended the payment for principal only and provide the letter or note you sent with the payment as proof. Most lenders will reverse the error and reapply the payment correctly, though it may take a few business days.
Is there a limit to how many principal-only payments I can make per year?
Most lenders do not limit the number of principal-only payments, but some charge a fee for each one. Check your loan documents or ask your lender about their policy. If fees apply, you might choose to make fewer, larger payments instead of many small ones.
Should I make principal-only payments or invest the money instead?
That depends on your interest rate and investment returns. If your mortgage is at 3% and you could earn 7% in the stock market, investing might build more wealth. If your mortgage is at 6% and you're risk-averse, paying down the mortgage provides a may provide "return" equal to your interest rate. Consider your comfort with risk and your overall financial goals before deciding.