mortgage prepayment pay ahead pay down calendar with date circled

Paying Down vs. Paying Ahead: What’s the Difference?

/15 Comments/in /by Mary Hunt

When it comes to paying off debt faster, the words “pay ahead” and “pay down” sound like the same thing—until they really don’t. I learned that lesson the hard way, and trust me, it’s one I’ll never forget. If you’ve ever thought about throwing a little extra money at your mortgage (good idea!), make sure you know how to do it without giving your lender a free pass to misapply your payment.

mortgage prepayment pay ahead pay down calendar with date circled

Paying down your mortgage means making a payment directly toward your loan’s principal balance. This reduces the amount of money you owe, and it means you’ll pay less in interest over time. However, your regularly scheduled payments are still due each month, like clockwork. No skipping allowed.

Let’s say you make your regular mortgage payment in April and then send in three additional payments marked “principal only.” You’re on a mission to pay off your home faster and save thousands in interest. Good plan! But just know: May, June, and July payments are still expected, regardless of your prepayment.

When Paying Ahead Can Backfire

Years ago, during a season when mortgage rates had taken a nosedive, we refinanced our loan to take advantage of better terms. The closing was in late August, with the first new payment due in October. Rather than take a break in September, we sent a payment early, labeled clearly as “Principal Prepayment” and included a note.

A few weeks later, we received a statement showing the payment had been applied to October’s regular payment—not to the principal, as we’d instructed. When I called, the customer service rep was kind, but not exactly helpful. “Someone must have assumed you wanted to pay ahead,” she explained.

Had that payment been applied as intended, we would cut over $4,000 in interest and three months off the loan term. Thankfully, we persisted and got it corrected. But what if we hadn’t followed up?

Here’s the kicker: applying it to October’s payment would have put almost the entire amount toward interest, not principal—a win for the lender, not for us.

How to Prepay Your Mortgage the Right Way

If you’re ready to make an extra payment toward your mortgage (go you!), the key is making sure that payment does exactly what you intend—reduce your principal balance. This is where things can get a little murky if you’re not careful. Lenders don’t always default to your best interest, so clarity is everything.

Here’s how to make sure your payment is applied to the principal only:

  1. Write “Apply to Principal Only” in the memo line of your check.
  2. Include a brief note with the payment clearly stating your intent—something like: “Please apply this additional payment to principal only. Do not advance my due date.”
  3. Use the correct selection in your lender’s online payment portal. Look for a specific option to apply additional funds to principal (not future payments).
  4. Call your lender’s customer service to confirm the steps and ask how to label extra payments for your specific loan.
  5. Follow up after the payment has posted to verify it was applied correctly.

And just to cover your bases? Snap a photo of your check and written note or take a screenshot of your online payment confirmation. If anything gets misapplied, you’ll have a paper trail to back up your instructions.

Some lenders apply additional payments to the next due payment by default—unless explicitly told otherwise. Don’t assume your intentions are understood. Spell it out, follow up, and protect your progress.

Why Clear Instructions Matter More Than Ever

In 2025, many mortgage lenders are automating everything—and while that sounds convenient, it can also lead to big mistakes if your intentions aren’t crystal clear.

Some lenders return extra payments if the purpose isn’t obvious. Others apply them automatically to the next scheduled payment (“pay ahead”) instead of toward the balance (“pay down”).

In the worst-case scenario, a misunderstanding could lead to missed payments or even foreclosure warnings if you mistakenly assumed you were paying ahead and your lender applied those funds elsewhere.

And don’t let a customer service hiccup stop you. You have every legal right to pay down your mortgage—unless your loan has a prepayment penalty clause (less common these days, but still worth checking).

The takeaway? Paying extra on your mortgage can be a powerful financial move. Just make sure your money is working for you, not lining your lender’s pockets by mistake.

 

Question: Have you ever tried paying down a loan early—did it go as planned or did your lender get creative? Share your story in the comments below.

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15 replies
  1. Ann Laing says:

    I did this with a large home improvement loan. I knew there would be extra money coming in the first few months of the year so I started paying the first day I could make a payment online even though the first auto payment was not due for 2 months. Each time over the next 2 months that we had extra money I paid it to the loan online. The site was not real time, so I checked at the end of each month to see how my payments were applied. I kept a close eye on it. Luckily we were on track to pay it off just after the first auto payment was due. The week of the auto payment came and the auto payment was not taken out by the lender. I did not receive any notices from them. Then, when I looked at the auto payment screen, it now said balance to be paid in full with the following months payment, instead of the $450 that it should have said. Luckily, we were able to pay it off before that payment was due!!! By making payments as soon as we had the money and not waiting till it was due we saved a ton in interest! Be sure to check and double check and triple check your payments on any loan!

    Reply
  2. Frances says:

    Hello Mary and thanks for the valuable useful info. We already do this with our mortage and cut down the years on our loan and interest by 10 years. Woo! Hoo! Unfortunately, this tactic doesn’t work with every company. We purchased a new vehicle before Christmas and have been making extra payments toward our principal. At least we thought we were. Evidently, we discovered to our chagrin that no matter what we note on our check on on the accompanying letter we send with it, Capital One Auto Finance doesn’t apply extra payments to principal, though they said they did. Instead, all our extra payments are applied to interest, which doesn’t exactly help us. Yes, we’ve gone back and forth with this with different Cust Service Reps, which are all located overseas and difficult to understand. One says, just write “For Principal” on checks and it will go toward principal. No dice. Another says differently. When we pointed out this is not in the contract, they state, “This is our practice.” Nice, huh? Learn from our mistake. Stay away from Capital one and other big banks. We got a great APR, but we’re not building any equity in our new car. Not as quickly as we hoped anyway. Needless to say, we can’t recommend them and wouldn’t use them again no matter what the APR was! Thanks again. Stay safe!

    Reply
  3. Carolyn says:

    I had a prepayment misapplied as you described (a long time ago) and I had to threaten reporting it to the bank oversight agency for disregarding the banking rules to get the prepayment amount credited after demanding to speak to a supervisor. I got it worked out but I will never willingly do business at that bank again (it had bought the original mortgage so not my choice to deal with them at all).

    Reply
  4. MaryBB says:

    Yes! Not only did i refinance to reduce the amount of interest I’ll be paying, but I’ve also been working with my bankers to make additional principle-only payments every month.

    Reply
  5. Margaret says:

    My husband and I have always disciplined ourselves to payoff our mortgage early. The first mortgage we ever took out was a 30 year. We always paid a little extra toward the principal, but we also refinanced twice, cutting our interest rate in half. When we had to move, we only had 10 years left to pay on our home after having lived in it only 10 years! Not bad if you ask me. We are currently working on the mortgage for our 2nd home which we have lived in for 3 1/2 years, and have already refinanced it shaving off 2% from the original mortage and are continuing to pay extra toward the principal each month. We don’t consider ourselves financially sauvy; we just hate owing anyone money and hate giving our hard earned money away to a big institution.

    Reply
  6. Rose says:

    We have a loan through HSBC for a second mortgage. We pay 13 payments a year, however, they will not allow us to pay ahead on the principal. We have contacted them several times to get this changed, but they won’t. Has anyone else have had this happen? They put the money in something called “unapplied funds”.

    Reply
  7. Beck says:

    We paid about $2.50 a month for an equity enhancement program the bank took out a half payment every 2 weeks. Thus making principal payments earlier in the month then the regular date plus an additional full payment per year since there was 13 full payments made each year. Eventually we added more and more to each half payment. The payments were automatically deducted from my checking account then we got a lump sum together and totally paid it in full It is great not to have a mortgage. That amount – some of it went then to save for the kids college which came in handy. As soon as they both graduate it will be put in for retirement. I had worked for a bank that had trouble splitting payments that came in so I didn’t mind paying the $2.50 a month for the service even though a lot of experts say do it yourself I didn’t want the hassle. So we paid off our 15 year loan in 7 years. What a relief.

    Reply
  8. miss judi says:

    Howdy Mary! I don’t know if my small loan works the same as a regular mortgage-I have a little trailer house. Soon after I moved in, with a loan for $10,000, I started working on how to do the ‘principal only payment’. Some months have been smoother than others. Sometimes when I call to make this ‘pop’, the computer system asSumes that I’m making a loan prepayment. But aMazingly!! While living on unemployment and student loans, I have it pared down to just over $2,000! In 3 years! I am Soo Blessed! I will own my little trailer before my student loan payments start!!

    The tricky part is that the loan payment is taken out automatically, and so I need to call on That day to maximize my ‘pop’…but some of the folks at the bank have to be conVinced I can do this ;-)…it is Well worth the effort!

    Reply
  9. Vonnie says:

    We pay our mortgage online and have it set up to pay an extra $100 per month that goes directly to principal. That means that we will pay the 15-yr loan off 18 months early and save us about $15,000 over the life of the loan.

    Reply
  10. KellyJMF says:

    When I left college, my student loans had a 6-month period before payments needed to start. Since I had a job, I started making payments right away in case there came a time when I didn’t have enough to make the payment that month. It was a huge help when finances got tight so I could always keep my obligations current. Later when I got a better job, I started paying extra each month and saved a nice chunk of interest just rounding up the payments a bit.

    Reply
  11. Jenn says:

    My mortgage lender’s online payment screen includes a field specifically for extra principal payments. So far so good. Even though I can only afford to pay an extra $5/month on my mortgage, that small amount reduces my total payments by 1-2 over the life of the mortgage.

    Reply
  12. Naomi W. says:

    Ever since we refinanced our home for the first time 9 years ago, we have rounded off the payment to a higher number, adding about $150 to our payment each month. Just this little bit of extra principal adds up. A friend told me what I should have done is add the same percentage to my mortgage as what my employer gives me as a raise. So if my raise is 5%, then up your house payment 5%. All of the additional amount is principal. Do this every year! Boy will that help pay the mortgage down!

    Reply
  13. lynnemp says:

    My home is now paid for but we went through some very rough times. The original loan was taken over by a bank, and then things went sour. Our payments weren’t credited etc. I began making the payments in person at the local branch and continued to have problems. Each month I paid the regular payment plus an additional amount to be credited on the principal. Even though the teller assured me it was entered as instructed (on my papers & check & personally) each month my statement would be incorrect. I’d have to go back to the bank and get it straightened out. This went on for several years. I finally had them call the main office & I talked to a manager and was assured that there would be no further “mistakes”. There weren’t. This was especially important because we bought our home on a mortgage rate that was adjustable & it kept going up, up & up. Fortunately by pre-paying even just a small amount each month, we were able to chisel away the principal & pay it off early.

    Reply
  14. Dar says:

    We bought our first home in 1976 for $31,500, borrowing $28,300. After living there eleven years (and paying a little extra on the principal), we only reduced the amount owing by only $3,000! Fast forward to July, 2009. We purchased a home with a mortgage of $131,000. Since we are entering our 60’s, we decided to pay extra on the principal each month to pay the house off in less than 30 years. Our lender allows us to make online principal only payments by transferring money from our checking account. As of November, 2012, we only owe $27,870! I predict, Lord willing, we’ll have the house paid off in less than a year. Paying extra on the principal definitely pays off!

    Reply
  15. kaetra says:

    Just when you think you know the answer (e.g. pre-pay the principal) they change the question (e.g. “What does pre-pay mean?”)!

    Reply

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