A principal only payment reduces what you owe on a loan without paying interest

A principal only payment is money you send to a lender that goes entirely toward reducing the amount you borrowed, not toward interest charges. On most loans, your regular payment covers both principal and interest. A principal only payment skips the interest portion and applies the full amount to what you actually owe.

This option is most common with mortgages, student loans, and personal loans. Whether your lender allows it, and whether it makes financial sense, depends on your loan terms, your interest rate, and how much extra you can afford to send.

Key Takeaways

  • A principal only payment applies your entire payment to the loan balance, not to interest, which can reduce the total interest you pay over the life of the loan.
  • Not all lenders allow principal only payments, and some charge a fee or require a minimum payment amount, so you must check your loan documents or contact your lender first.
  • Principal only payments shorten your loan term only if your lender recalculates your monthly payment; otherwise they reduce interest while keeping your payment schedule the same.
  • The financial benefit of a principal only payment is larger when your interest rate is high and when you make the payment early in the loan, before most of your regular payment goes to interest anyway.

How principal only payments differ from regular payments

On a typical loan payment, your lender divides your money between two things: interest (what the lender charges you for borrowing) and principal (the amount you actually borrowed). Early in the loan, most of your payment goes to interest. Later, more goes to principal. A principal only payment reverses this by sending all of it to principal.

Example: You have a mortgage with a $300,000 balance and a 6 percent interest rate. Your regular monthly payment might be $1,799, split roughly as $1,500 toward interest and $299 toward principal. If you send a principal only payment of $1,000, the entire $1,000 reduces your balance. Your next regular payment still covers interest on the new, slightly lower balance.

The difference matters most when you send extra money. Sending $500 extra as part of your regular payment still splits that $500 between principal and interest. Sending $500 as a principal only payment puts all $500 toward what you owe.

Which lenders allow principal only payments

Mortgage lenders almost always allow principal only payments, though some charge a fee (typically $25 to $100 per transaction) or require a minimum amount. Federal student loan servicers allow them. Private student loan lenders vary—some allow them freely, others charge fees, and some do not allow them at all. Personal loan lenders also vary widely.

Your loan documents should state the policy. If they do not, contact your lender directly and ask whether you can make a principal only payment, whether there is a fee, and whether there is a minimum amount. Some lenders require you to specify in writing that a payment is principal only; otherwise they may explore it as a regular payment.

When you contact your lender, also ask whether making a principal only payment affects your loan term. Some lenders recalculate your monthly payment after a principal only payment, which shortens how long you owe money. Others keep your payment schedule the same, which means you pay off the loan faster but your monthly payment does not change.

When a principal only payment saves you money

A principal only payment saves you the most money when your interest rate is high. On a 3 percent mortgage, the interest savings from an extra $500 payment are small. On a 7 percent mortgage or an 8 percent personal loan, the savings are much larger. The higher the rate, the more of your regular payment goes to interest, and the more you save by sending principal only.

Timing also matters. A principal only payment made early in the loan saves more interest than one made near the end, because you reduce the balance while the loan still has many years to run. On a 30-year mortgage, a principal only payment in year 2 saves far more interest than the same payment in year 28.

The math also depends on what you would do with the money otherwise. If you would invest it at a return higher than your loan interest rate, investing might be better than paying down the loan. If you would spend it, paying down the loan is almost always better.

How to make a principal only payment

First, confirm with your lender that principal only payments are allowed and whether there are fees or minimums. Then, when you send the payment, specify in writing that it is a principal only payment. Some lenders have a checkbox or dropdown on their online payment portal. Others require a note with the payment or a separate written request.

If you pay by mail, include a letter stating the loan number, the payment amount, and the instruction that it is principal only. If you pay online, look for an option to add a note or message. If neither exists, call your lender before sending the payment to confirm how to label it.

Keep a record of the confirmation. After the payment posts, verify that your lender applied it correctly by checking your account statement or calling to confirm the new balance.

Principal only payments and your loan term

Whether a principal only payment shortens your loan depends on your lender's policy. Some lenders recalculate your monthly payment after you send principal only money, which means you pay off the loan sooner. Others leave your monthly payment unchanged, so you finish paying earlier but your payment amount stays the same.

Ask your lender which approach they use. If they recalculate, a principal only payment of $5,000 might reduce your monthly payment by $50 and shorten your loan by several months. If they do not recalculate, your monthly payment stays the same, but you pay off the loan faster because the balance is lower.

Neither approach is wrong—they just work differently. Recalculating gives you a lower payment going forward. Not recalculating lets you pay off the loan sooner while keeping your budget predictable.

Comparing principal only payments to other payment strategies

You have other ways to pay down a loan faster. You can straightforward send extra money with your regular payment each month—most lenders explore the extra to principal automatically. You can make biweekly payments instead of monthly ones, which results in one extra payment per year. You can refinance to a shorter loan term, though this usually means a higher monthly payment.

A principal only payment is useful when you have a lump sum (a bonus, a tax refund, an inheritance) and want to make sure all of it goes to principal, not interest. It is also useful if your lender charges fees on regular extra payments but not on principal only payments, though this is rare. For ongoing extra payments, straightforward sending extra money with your regular payment is usually simpler and achieves the same result.

Frequently Asked Questions

Do principal only payments hurt my credit score?

No. Paying down a loan faster does not harm your credit. In fact, reducing your balance can slightly improve your score over time because it lowers your credit utilization (the amount you owe compared to your total available credit). The key is continuing to make your regular monthly payments on time.

Can I make a principal only payment on a credit card?

Most credit card companies do not offer principal only payments because credit cards do not work like installment loans. You can pay more than the minimum, and any amount above interest and fees goes to principal, but you cannot designate a payment as principal only. Contact your card issuer to confirm their policy.

What happens if my lender does not allow principal only payments?

You can still send extra money with your regular payment. Most lenders explore any amount above the required payment to principal automatically. This achieves the same result as a principal only payment, though you may need to specify in writing that the extra should go to principal rather than being held as a credit toward future payments.

Does a principal only payment affect my interest deduction?

On a mortgage, the interest you pay is deductible on your taxes (if you itemize deductions). A principal only payment reduces your future interest charges, which means your deduction in later years will be smaller. This is a long-term trade-off: you pay less interest overall, but you also deduct less interest on your taxes.

Can I make a principal only payment on a car loan?

Many car lenders allow principal only payments, but policies vary. Some charge a fee. Others require a minimum amount. Check your loan documents or contact your lender. If they do not allow it, you can send extra money with your regular payment, and most lenders will explore it to principal.