How to Make an Extra Payment on a Conventional Loan Go to Principal

The Quick Read: Tell your servicer, in the way it accepts, that the extra money is additional principal. Send it with or after your regular payment, then check the next statement to confirm the balance dropped by that amount. Labeling is the step most borrowers skip, and it decides where the money lands. A properly labeled extra payment shortens the loan and cuts total interest. It does not lower your required monthly payment unless the servicer agrees to a recast.

What Happens to Extra Money by Default?

Extra money without instructions may not reduce your balance. A servicer can treat it as an early installment, a partial payment held aside, or a credit toward a future month. Practices differ, which is why guidance on this topic often conflicts.

The CFPB says you may be allowed to make extra payments toward principal, which can shorten the loan and reduce interest. It also tells borrowers to confirm the loan allows extra payments and to make sure the money is applied to principal, not interest. The agency’s illustration is that even $100 more per month may cut the term by several years. Treat that as an example, not a promise.

For loans owned or securitized by Fannie Mae, the Servicing Guide requires the servicer to accept and apply an additional principal payment, called a principal curtailment, when the borrower identifies it as such on a current loan. The key phrase is “identified by the borrower.” The rule rewards the borrower who labels the money.

Before You Send Anything: Three Checks

Run these checks first. Each takes minutes and prevents most problems.

1. Does the loan allow it without a penalty? Look at your note and your Loan Estimate or Closing Disclosure. The Loan Estimate must state whether the loan carries a prepayment penalty. The CFPB explains that a prepayment penalty is a fee some lenders charge for paying off all or part of a mortgage early. It typically applies to a full payoff, such as a sale or refinance, within the first few years (usually three or five). In some cases it can reach a large lump sum. Not every mortgage has one.

2. Is your loan current? The clean rules described here assume you are up to date. On a delinquent loan, extra principal may be applied differently, including toward curing the delinquency. If you are behind, ask the servicer how it will treat the money before sending it.

3. Who owns the loan? Most conventional loans follow Fannie Mae or Freddie Mac rules. A portfolio or private-investor loan follows your note and that investor’s own rules. Your note governs in every case.

How Do You Mark a Payment as Principal?

Use whichever channel your servicer offers, and make the label unmistakable. The servicer’s online portal is usually the cleanest route because it typically has a separate field for additional principal.

1. Online portal. Look for a field labeled “additional principal,” “principal only,” or “extra principal.” Enter the extra amount there, separate from the regular payment amount.

2. Payment coupon or statement stub. Many statements offer a line for additional principal. Fill it in and write the amount clearly.

3. Phone. Ask the representative to apply the extra amount as a principal curtailment. Note the date, the representative’s name, and any confirmation number.

4. Mail. Include a short written note with your loan number stating that the extra amount is additional principal. Use a separate check for the extra amount when you can, so the regular payment stays clean.

Servicer methods vary, so confirm which one yours honors. If the method is unclear, put the instruction in writing.

Does Timing Matter Within the Month?

Yes. Fannie Mae’s payment-processing guidance sets an order of application:

• If the curtailment arrives with your scheduled monthly payment, the servicer applies the scheduled payment first, then the curtailment.
• If it arrives separately during the month, the servicer applies the curtailment first, then the next scheduled payment.

Either way, your required payment stays satisfied and only the extra amount reduces the balance. Sending the extra with your regular payment is the simplest approach. It leaves less room for confusion.

Date of receipt also matters. Under Regulation Z, a servicer must credit a periodic payment as of the date it is received, though posting need not happen the same day. A periodic payment means enough to cover principal, interest, and escrow, if any, for a billing cycle. So extra principal does not reduce your taxes or insurance, because those sit in escrow.

How Do You Verify It Worked?

Check the next statement or the online transaction history. Three things should be true:

• The principal balance fell by the extra amount, in addition to the normal principal portion of your scheduled payment.
• Your next due date did not move forward.
• The extra money is not sitting in a suspense or unapplied account. If a partial payment is held there, Regulation Z requires the periodic statement to show it.

If the balance dropped but the due date also advanced, the servicer may have treated the money as paid ahead. That is not the same as paying down principal. Ask for it to be corrected.

What If It Was Misapplied?

Ask the servicer in writing to reverse the entry and reapply the money as additional principal. Include your loan number, the payment date, the amount, and how you labeled it. Keep proof of the instruction, whether a portal confirmation or a copy of the mailed note.

If the servicer does not fix it, you can file a complaint through the CFPB at consumerfinance.gov. A written trail makes that step far stronger.

Key Terms Defined

Principal curtailment: An extra payment, beyond the scheduled amount, that the borrower identifies as reducing the loan balance.

Paying ahead: Money credited toward a future installment, which can advance your due date without reducing the balance the way a curtailment does.

Recast (re-amortization): A recalculation of your required principal-and-interest payment using the current balance, rate, and remaining term.

Suspense (unapplied) account: A holding place where a servicer may keep a partial payment until enough accumulates for a full periodic payment.

Prepayment penalty: A fee some loans charge for paying off all or part of the mortgage early.

Where the General Rule Breaks

The label-it-and-verify approach works for the typical current conventional loan. These cases behave differently.

Partial payments and biweekly plans. A servicer may hold a partial payment in suspense until a full periodic payment accumulates, per 12 CFR 1026.36. A half-payment every two weeks does not always reduce principal on arrival. Freddie Mac’s Guide section 8103.3 says a partial payment that falls short by more than $50 is either held as unapplied or returned. Ask your servicer how it treats split payments before setting one up. Third-party payment services that collect biweekly are a separate arrangement with their own rules.

Modified or deferred loans. If your loan carries a payment deferral or modification, Fannie Mae’s rules send curtailments to the interest-bearing balance first. Once the extra equals or exceeds that balance, it goes to the non-interest-bearing balance first.

Interest-only periods. Under Freddie Mac’s guide, a curtailment during an interest-only period means the next interest-only payment is recalculated on the new, lower balance.

Non-conforming payments. If a servicer lists payment requirements but accepts a payment that misses them, it must credit that payment within five days of receipt.

Later modifications. Freddie Mac notes that if you made curtailments but your payment was never recalculated, the remaining term in a later Flex Modification is computed from the pre-modification balance and payment. Extra principal may not buy as much relief as you expect in that situation.

Loans outside the agencies. Portfolio and private-investor loans follow the note and the investor’s rules, not the agency guides.

Extra Principal, Recasting, or Refinancing?

Each option does a different job. Pick based on what you want the money to accomplish.

A recast is the route to a lower required payment. Fannie Mae’s recast job aid describes it as something the servicer may agree to after a substantial curtailment, using the current balance, rate, and remaining term. It is not a right. Freddie Mac likewise treats recalculation at the borrower’s request as subject to conditions, including that payments are current.

A smaller balance can also mean a smaller loan if you refinance later. Just remember a prepayment penalty, if your note has one, is most often triggered by a full payoff inside the first few years.

How Extra Payments Relate to Mortgage Insurance

This is the part most explainers skip. On a conventional purchase loan, mortgage insurance is required above 80% loan-to-value. Standard purchase leverage runs to 95% of the price, or 97% for a first-time buyer on a one-unit primary home with a fixed rate, subject to lender guidelines. Under the Homeowners Protection Act, you may request cancellation when the balance reaches 80% of the original value, with good payment history, no subordinate liens, and no decline in value. The servicer must terminate it automatically at 78%.

Extra principal gets you to that 80% mark sooner, because the balance falls faster than the scheduled amortization alone. It does not cancel anything by itself. You still make the request, and the servicer confirms the conditions. If you started with 3% to 5% down, a steady extra-principal habit and a documented request can be a meaningful way to remove that cost earlier. For a borrower weighing that tradeoff, Lendmire’s piece Is One Extra Payment Worth It on a Low-Down-Payment Conventional Loan? goes deeper. Many borrowers start by reviewing the conventional loan programs available to them.

Should You Do It? A Decision Checklist

Extra principal is a good fit when most of these are true:

• Your loan has no prepayment penalty, or the penalty will not apply.
• You hold an emergency cash cushion you will not touch.
• Higher-cost debt is already handled.
• You want a shorter term or earlier mortgage insurance removal more than you want liquidity.
• You can keep the loan current without strain.

It is a weaker fit when cash is tight, when the extra money could clear costlier debt, or when you are unsure you can get the money back out. Once principal is paid down, you generally cannot withdraw it without borrowing again.

If your goal is a lower monthly payment rather than a shorter loan, ask about a recast before assuming extra principal will deliver it.

If you are buying a home and want to see whether a conventional loan fits your file, Lendmire can help you compare the options and what each one asks of the file. Program figures are subject to lender guidelines and full file review, and nothing here is a commitment to lend.

For your own numbers, request a scenario review with Lendmire.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and home buyers in 16 states. FHA, VA, conventional and jumbo purchase and refinance loans are arranged through wholesale lending channels; Lendmire brokers the financing and the lender underwrites each application. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB – Your mortgage servicer must comply with federal rules

2. Fannie Mae Servicing Guide C-1.2-01

3. CFPB – What is a prepayment penalty?

4. Fannie Mae Servicing Guide F-1-09

5. 12 CFR 1026.36

6. Freddie Mac Guide 8103.3

7. Fannie Mae job aid – Processing a Principal Curtailment on a Recast Loan