Principal-only payments go directly to reducing what you owe, not toward interest or fees
A principal-only payment is money you send to your lender that reduces only the amount you borrowed—not the interest that accrues on top of it. On a car loan, this means your payment skips the interest portion entirely and goes straight to lowering your balance. Most lenders allow this, but the process and restrictions vary by lender and loan type.
The key difference: a regular payment covers both interest and principal. A principal-only payment covers only principal. If your lender allows it, you can send extra money and specify that it go toward principal alone, which shrinks your loan faster and saves you money on total interest paid.
Not every lender makes this easy. Some require you to call and request it. Others have online portals where you can designate the payment type. A few charge a fee or have restrictions on how often you can make them. Before you send money, contact your lender to confirm they accept principal-only payments and what method they require.
Key Takeaways
- Principal-only payments reduce only what you owe, not the interest charged, and must be requested separately from your regular payment.
- Contact your lender by phone or check your online account to confirm they accept principal-only payments and what method they require.
- Some lenders restrict how often you can make principal-only payments or charge a fee, so ask about limits before sending money.
- Principal-only payments shorten your loan term and lower total interest paid, but they do not change your regular monthly payment amount unless you refinance.
- Make sure your lender applies the payment correctly by checking your next statement to confirm the principal balance dropped and interest stayed the same.
How to contact your lender and request the option
Start by calling the customer service number on your loan statement or car loan agreement. Tell them you want to make a principal-only payment and ask three things: whether they allow it, what method you should use, and whether there are any restrictions or fees.
Write down the name of the person you speak with, the date, and what they told you. This protects you if a payment is applied incorrectly. Ask them to confirm in writing—some lenders will email or mail you a summary of the call, or you can request they note it in your account.
If your lender has an online account portal, log in and look for payment options. Some lenders let you choose "principal only" or "extra principal" when you set up a payment. If you see that option, use it. If not, call and ask whether they can set up a standing instruction to apply extra payments to principal automatically.
Methods for sending a principal-only payment
The most common methods are phone, online portal, mail, and automatic transfer. Phone is the safest for a one-time payment because you can confirm the amount and terms with a person before the money leaves your account.
Online portals let you schedule the payment yourself and often show you exactly how it will be applied. This works well if your lender's system clearly separates principal-only from regular payments. Mail is slower—typically 7 to 10 business days to process—but creates a paper trail if you include a letter stating "principal only" and keep a copy.
Automatic transfers from your bank account are fast and reliable, but only use this method if your lender has confirmed in writing that they will apply it as principal-only. Do not assume an automatic payment will be treated differently from a regular payment without explicit confirmation.
What happens to your regular monthly payment
Making a principal-only payment does not change your regular monthly payment amount. Your loan agreement specifies a fixed payment—usually principal plus interest—and that payment stays the same unless you refinance or modify the loan.
Here is the math: if your regular payment is $400 and you make a $200 principal-only payment in addition, you still owe $400 the next month. The principal-only payment simply reduces your balance faster, which means you pay less interest over the life of the loan and finish paying it off sooner.
Some borrowers confuse principal-only payments with making extra payments toward the next month's bill. They are different. An extra payment reduces what you owe overall. A principal-only payment reduces what you owe and specifies that none of it goes to interest.
Restrictions and fees to watch for
Some lenders limit how often you can make principal-only payments—for example, once per month or once per quarter. Others charge a fee, usually $10 to $25 per transaction. A few lenders do not allow them at all, particularly if your loan is held by a third-party servicer.
Prepayment penalties are rare on car loans but do exist on some older loans or loans from certain lenders. A prepayment penalty charges you a fee if you pay off the loan early. Before making large principal-only payments, ask your lender whether your loan has a prepayment penalty and what it costs.
If your loan is in default or you are behind on payments, some lenders will not accept principal-only payments. They may require you to bring the account current first. If this applies to you, ask whether paying the overdue amount plus a principal-only payment is an option.
How to verify the payment was applied correctly
After you make a principal-only payment, wait for your next statement. Check three things: the principal balance should have dropped by the amount you sent, the interest charged should be calculated on the new lower balance, and your regular payment amount should not have changed.
If the payment was applied as a regular payment instead of principal-only, contact your lender immediately. Ask them to correct it. Most lenders will reverse the incorrect application and reapply it correctly, though this may take one or two billing cycles.
Keep records of every principal-only payment you make: the date, amount, confirmation number, and the name of the person who processed it. If a dispute arises later, you will have proof of what you sent and when.
When principal-only payments make the most sense
Principal-only payments are most useful if you have extra money and want to reduce the total interest you pay without changing your monthly budget. They work well if you are ahead on your regular payments and want to accelerate payoff.
They are less useful if you are struggling to make your regular payment. In that case, focus on paying on time first. A late payment damages your credit and costs more in fees than you would save with a principal-only payment.
Principal-only payments also make sense if your interest rate is high—say, above 7 percent. The higher the rate, the more interest you save by reducing principal faster. If your rate is very low—below 3 percent—the savings are smaller, and you might get better returns by investing the extra money instead.
Frequently Asked Questions
Can I make a principal-only payment if I am behind on my loan?
Most lenders will not accept a principal-only payment if your account is in arrears. They typically require you to bring the account current first. Contact your lender and ask whether you can pay the overdue amount plus a principal-only payment in one transaction, or whether you must catch up before making extra principal payments.
Will a principal-only payment lower my monthly payment amount?
No. Your regular monthly payment stays the same unless you refinance or modify your loan agreement. A principal-only payment reduces your total balance and the amount of interest you pay over time, but it does not change the amount due each month.
What if my lender will not accept principal-only payments?
Some lenders do not offer this option, particularly if your loan is serviced by a third party. If yours does not, you can still pay extra—just make a regular extra payment. It will reduce your balance faster, though some of it will go to interest. Ask your lender whether they will apply extra payments to principal automatically or if you must request it each time.
Does making a principal-only payment hurt my credit score?
No. Paying down your loan balance improves your credit over time by lowering your credit utilization and showing you are managing debt responsibly. Making a principal-only payment has no negative effect on your score.
How often should I make principal-only payments?
That depends on your budget and your lender's rules. Some lenders allow one per month, others allow one per quarter. Make them as often as you can afford to without missing a regular payment. Even one principal-only payment per year saves you money on interest.