How to close an IOU when it’s fully paid

Most loans between friends do not end with a ceremony. The last transfer goes through, somebody sends a thumbs-up, and that is that. It feels finished, but on paper it is not. To close an IOU properly you need one more thing than the final payment: a written record that the debt is paid in full. It takes ten minutes, and it is the piece both people will be glad to have if the question ever comes up again.

Why the last step is the one people skip

By the final payment, everyone is tired of the loan. The borrower wants to stop thinking about it, the lender feels awkward making a fuss about the end, and both assume the bank record says it all. It does not. A transfer shows that money moved. It does not show that the lender accepted it as the last payment, or that nothing else is owed.

That gap matters more than it seems. Memories fade, phones get replaced, and an IOU sitting in a drawer with no “paid” mark on it still looks like an open debt to anyone who finds it, including the lender, years later, half-remembering. A paid-in-full note closes that door.

The plan: four weeks to close an IOU cleanly

Here is the whole plan at a glance, counting back from the final payment. The steps are small; the timing is what makes them easy.

1. 4 weeks before

   Both people check the balance against their records. Any mismatch is still small and easy to fix.

2. 2 weeks before

   Agree the exact final amount in writing, including any odd last payment or rounding.

3. Final payment day

   The borrower pays by a method that leaves a record, labeled “final payment.”

4. Same day

   The lender confirms receipt in writing.

5. Within a week

   The lender signs a paid-in-full note. The original IOU is returned, marked paid, or both.

6. After

   Both people file the note with the IOU and payment records, and keep them for years.

Four weeks out: check the balance together

Parker borrowed $1,800 from Reese for a used scooter and has been paying $150 on the 1st of each month. With one or two payments left, it is time to check that both of them see the same number.

Each person adds up their records: bank or app transfers, any cash receipts, any agreed changes. If they match, great. If not, this is the moment to find out why. The usual culprits are a cash payment one person forgot to log, a payment that was split across two transfers, or a skipped month that was moved to the end. Our guide on proof of repayment explains how to rebuild a trail if yours has gaps.

Two weeks out: agree the amount that will close an IOU

Loans rarely end on a perfectly round number. Maybe there was a partial payment in the spring, or interest left a few dollars of change, or the plan always ended with a smaller payment. Agree the exact final figure now, in writing: “Final payment: $150 on June 1. After that the loan is fully paid.” If you plan to forgive a small leftover amount, say so clearly at this stage, not after.

Final payment day: pay it so it is obvious

The final payment should be the clearest one of the whole loan. Use a method that leaves a record, and label it so nobody could mistake it for anything else: “Final payment, IOU of Dec 1, 2025, $150.” If the final payment is cash, the lender should write and sign a receipt on the spot.

Borrowers, this is also the moment to ask for the closing note. One message covers both:

The same week: the note that will close an IOU

This is the document that lets you actually close an IOU. It comes from the lender, since the lender is the one confirming nothing more is owed, and it should be signed and dated. If the original IOU was signed by both people, have both sign this too.

PAID IN FULL

I, [Reese Patel], confirm that [Parker Nguyen] has
repaid in full the loan of $[1,800]
([one thousand eight hundred] dollars) made on
[December 1, 2025], as set out in our IOU of that date.

Total repaid: $[1,800]
Final payment: $[150] on [June 1, 2026]

Nothing further is owed under this loan.

Lender:   ____________________  Date: __________
Borrower: ____________________  Date: __________

That is all it needs. Avoid adding anything that is not true, such as “all debts between us are settled” if there is also a separate loan or an unpaid share of a trip. Keep the note about this loan.

The last payment ends the money. The paid-in-full note ends the question.

Receipt, paid-in-full note or release of debt?

You will see three kinds of closing documents mentioned online, and they do slightly different jobs.

• A receipt confirms one payment: “Received $150 on June 1.” Useful for every installment, especially cash ones, but it does not say the loan is finished.
• A paid-in-full note confirms the whole debt has been repaid and nothing more is owed under this loan. This is what most people need to close an IOU between friends.
• A release of debt is a broader statement in which the lender gives up any further claim, often used when a debt is settled for less than the full amount or forgiven. The UCC recognizes something similar for formal notes: a person entitled to enforce a note can discharge it by renouncing their rights in a signed record.

For a loan that was simply repaid as agreed, the paid-in-full note is enough. If the loan ended with a settlement or forgiveness, write it more like a release, naming exactly what was accepted and stating that nothing further is owed. For larger or disputed amounts, have a lawyer look at the wording.

What to do with the original IOU

You have three good options, and you can combine them:

• Return it to the borrower. This is the traditional move, and it mirrors how formal notes work. Under the Uniform Commercial Code, when a negotiable note is paid in full, the person paid can be asked to surrender the instrument, and surrendering, destroying or marking a note as canceled are recognized ways to discharge it.
• Mark it paid. Write “PAID IN FULL on [date]” across it, and have the lender sign next to it. Then take a photo so both people have the marked copy.
• Keep a copy, clearly marked. If both people want a copy, mark both and keep them with the paid-in-full note.

What we would not do is quietly throw it away. Destroying the only copy removes the record that the loan existed and was repaid, which is exactly the record you might want in a few years. Mark it, photograph it, then decide.

When you close an IOU with the last bit forgiven

Sometimes a lender decides to let the final $100 or $300 go. That is a kind thing to do, and it should still be written down. Add a line to the paid-in-full note: “Reese forgave the remaining $300 as a gift on May 20, 2026. Nothing further is owed.” Now nobody wonders later whether that $300 is still hanging there.

For most friendly loans, the tax side is a non-issue. The IRS can treat forgiving a debt as a gift, and gifts above the annual exclusion amount require a gift tax return; that threshold is far above what most people forgive at the end of a personal loan. If you are forgiving a large balance, check with a tax professional first. If you change your mind partway through and want to restructure instead, see how to change the terms of an IOU.

After you close an IOU: file it and keep it

Put the original IOU (or its marked copy), any amendments, the payment records and the paid-in-full note in one folder, digital or paper. Both people should keep their own set.

How long? Longer than feels necessary. Each state sets its own time limit for suing over a debt, and the CFPB notes that most fall between three and six years. If the loan carried interest, the lender generally has to report it as income, and the IRS advises keeping records that support your tax return until the period of limitations for that return runs out. We keep a closed loan’s file for at least six years after the final payment. It costs nothing, and you will never have to reconstruct it.

If you use IOUEZ, the record closes itself in a sense: when the recorded payments reach the agreed total, the agreement shows as settled for both people, with the date it was paid, and the payment history stays attached to it. It is still worth keeping your own copy outside the app; our guide to exporting your records covers how to keep one. For the full set of steps from the very start, see how to write an IOU.

How to close an IOU that did not go to plan

Not every loan ends neatly. If a loan is being closed for less than the full amount because the borrower genuinely cannot pay, the same steps apply with one change: the note says what was agreed, not “paid in full.” For example: “Reese accepts $1,200 as full settlement of the $1,800 loan. Nothing further is owed.” In legal terms, an agreement to accept something different as full settlement is called accord and satisfaction, and it works only when both people clearly agree. A partial payment on its own does not settle the rest.

If you are not yet at the closing stage and payments have stopped, start with what to do when a friend can’t pay you back. Closing comes after the plan, not instead of it.

The close, in one minute

When people ask us how to close an IOU, this is the short version: check the balance a month out, agree the last amount, label the final payment, get a signed paid-in-full note, mark the original, and file everything. Six small steps, spread across four weeks. The loan ends the way it started: clearly, in writing, with both people looking at the same page.