What a principal-only payment is
A principal-only payment is money you send to your lender that goes entirely toward reducing the amount you borrowed, not toward interest or fees. When you make a regular payment on a loan, your lender splits it: part goes to interest (what they charge you for lending), part goes to principal (what you actually owe), and sometimes part goes to escrow or insurance. A principal-only payment skips the interest and fees and reduces only the balance.
Most lenders allow principal-only payments, but you have to ask for it explicitly or send the money with a written instruction. If you just send extra money without specifying, many lenders will apply it to your next scheduled payment instead of to principal. Some lenders charge a fee for principal-only payments; others do not. Check your loan documents or call your lender to confirm whether they allow them and whether there is a cost.
The math is straightforward: if you owe $200,000 on a mortgage and send a $10,000 principal-only payment, your new balance is $190,000. That $10,000 never touches interest. On your next regular payment, you will owe less interest because the balance is smaller.
Key Takeaways
- A principal-only payment reduces only what you borrowed, not the interest your lender charges, and must usually be requested in writing or marked clearly when you send it.
- Principal-only payments lower your loan balance immediately, which means less interest accrues on future payments and you pay off the loan faster.
- Some lenders charge a fee for principal-only payments, while others allow them at no cost; you must confirm your lender's policy before sending one.
- Principal-only payments work best on mortgages and long-term loans where interest compounds over years, and are less useful on short-term or low-interest loans.
- If you cannot afford a principal-only payment, making regular payments on time builds equity faster than missing payments or paying late.
How principal-only payments reduce what you owe over time
When you make a principal-only payment, you shrink the balance that interest is calculated on. On a mortgage, interest is usually calculated daily based on your outstanding balance. If you owe $200,000 and your interest rate is 6 percent annually, you accrue roughly $32.88 per day in interest. If you send a $10,000 principal-only payment, your new balance is $190,000, and you now accrue roughly $31.23 per day. That $1.65-per-day difference compounds over months and years.
The larger effect is on your payoff timeline. A 30-year mortgage with a principal-only payment strategy can be paid off in 20 or 25 years, depending on how often and how much you pay. Each principal-only payment is money that would have gone to interest instead; it goes straight to shortening your loan term. On a $300,000 mortgage at 6 percent, a single $5,000 principal-only payment can save you thousands in total interest and shorten your loan by several months.
This effect is most dramatic on mortgages and car loans, where the balance is large and interest accrues over years. On a credit card or short-term personal loan, the benefit is smaller but still real. The key is that every dollar of principal you pay down is a dollar that will not accrue interest in the future.
When principal-only payments make financial sense
Principal-only payments are worth making if you have money left over after your regular payment and you want to reduce the total interest you pay. They make the most sense on loans with high balances, long terms, or high interest rates—mortgages, home equity loans, and auto loans are the clearest examples. On a 30-year mortgage, even small principal-only payments add up to significant interest savings.
Principal-only payments make less sense if you are carrying high-interest debt elsewhere. If you have a credit card balance at 18 percent and a mortgage at 5 percent, paying down the credit card first saves you more money overall. Similarly, if you do not have an emergency fund, sending extra money to principal leaves you vulnerable if an unexpected expense arises. Build your emergency fund first, then consider principal-only payments.
Principal-only payments also do not make sense if your lender charges a fee for them that is higher than the interest you would save. Some lenders charge $25 to $50 per principal-only payment. On a low-balance loan or a loan with a short remaining term, that fee can wipe out the benefit. Ask your lender what the fee is before you commit to a strategy.
How to send a principal-only payment to your lender
The process varies by lender, but the basic steps are the same. First, contact your lender and ask how they handle principal-only payments. Some lenders have a specific form you fill out; others accept a written note with your payment. Ask whether there is a fee and whether you can make principal-only payments online, by phone, or by mail.
When you send the payment, include a written instruction that says "Apply this payment to principal only" or "Do not apply this payment to interest or fees." Include your loan number, the amount, and the date. If you are mailing a check, write the instruction on the check itself or include a separate note. If you are paying online, look for a field that lets you specify how the payment should be applied; if there is none, call your lender before you submit.
Keep a record of every principal-only payment you make. Ask your lender for written confirmation that it was applied correctly. Some lenders make mistakes or apply the payment to the wrong account. Checking your loan statement after each payment ensures the balance dropped by the amount you sent, not by a smaller amount.
The difference between principal-only payments and regular extra payments
A regular extra payment is money you send on top of your scheduled payment, but you do not specify how it should be applied. The lender decides: they may apply it to your next scheduled payment, or they may apply part to interest and part to principal according to their standard formula. An extra payment reduces your loan balance, but not as efficiently as a principal-only payment.
A principal-only payment is explicit: you tell the lender that 100 percent of the money goes to principal. No part goes to interest or fees. Over time, this difference compounds. If you send $500 extra per month for 10 years, a regular extra payment might reduce your balance by $55,000 while a principal-only payment strategy reduces it by $60,000 or more, depending on your interest rate and how the lender applies regular payments.
Some lenders make this distinction easy; others do not. If your lender does not offer a principal-only option, ask whether you can pay your regular payment early and then send a separate payment marked "principal only." This workaround often works even when the lender does not advertise the option.
Risks and limits of principal-only payments
The main risk is that you send a principal-only payment and the lender applies it incorrectly. This happens more often than it should. Always get written confirmation and check your statement. If the payment was misapplied, contact your lender immediately and ask them to correct it.
Another limit is that principal-only payments do not lower your monthly payment. If you owe $200,000 on a mortgage and send a $10,000 principal-only payment, your next monthly payment is still the same amount. You are not getting relief from your monthly obligation; you are just paying off the loan faster. If you are struggling to make your regular payment, a principal-only payment will not help.
Some loan agreements prohibit principal-only payments or charge a penalty if you pay off the loan early. This is rare on mortgages but more common on certain personal loans and auto loans. Read your loan documents or ask your lender before you start making principal-only payments. If there is a prepayment penalty, calculate whether the interest you save outweighs the penalty.
Principal-only payments versus refinancing
If your goal is to pay off a loan faster and save on interest, you have two main strategies: principal-only payments or refinancing to a shorter term. Refinancing means taking out a new loan at a new interest rate to pay off the old one. If interest rates have dropped since you took out your original loan, refinancing to a shorter term (like 15 years instead of 30) can save you money and get you out of debt faster.
Principal-only payments require no application, no credit check, and no closing costs. Refinancing requires all three and can take weeks. If you are already in a low-interest-rate environment or your credit has declined, refinancing may not be worth it. Principal-only payments are simpler and have no upfront cost.
The trade-off is that refinancing locks in a new rate and a new term, which gives you certainty. Principal-only payments depend on you having money left over each month to send. If your income is unstable, refinancing to a shorter term might be riskier because your monthly payment will be higher. Talk to your lender about both options and run the numbers for your specific situation.
Frequently Asked Questions
Do principal-only payments hurt my credit score?
No. Paying down principal does not hurt your credit. In fact, reducing your loan balance can help your credit over time because it lowers your debt-to-income ratio. The only risk is if you miss a regular payment while saving money for a principal-only payment; missing payments damages your credit. Always make your regular payment on time first.
Can I make a principal-only payment on a credit card?
Most credit card companies do not offer principal-only payments in the traditional sense because credit cards do not have principal and interest separated the way loans do. However, you can pay more than the minimum and request that the extra money be applied to your balance rather than held as a credit. Call your card issuer to ask how they handle overpayments.
What happens if I make a principal-only payment and then miss my next regular payment?
The principal-only payment reduces your balance, but it does not reduce your monthly obligation. If you miss your next regular payment, your account will be reported as late to credit bureaus, and you may face late fees and interest charges. Principal-only payments are not a substitute for making your regular payment on time.
Can I make principal-only payments on a student loan?
Federal student loans allow extra payments, but they do not always allow you to specify that the money go to principal only. Extra payments are usually applied to your next scheduled payment. Private student loans vary by lender; some allow principal-only payments and some do not. Contact your loan servicer to ask about their policy.
How often should I make principal-only payments?
There is no set schedule. Some people make one large principal-only payment per year; others make small ones monthly. The frequency does not matter as much as the total amount. More frequent payments mean the balance drops sooner and you accrue less interest, but the difference is small. Make principal-only payments whenever you have money available and your lender allows it.