IOU Form Template

A free IOU form: a short, signed record that one person owes another a specific amount, with a repayment date and an optional payment schedule. Download in PDF or Word, fill in the bracketed fields, and sign.

Last updated: August 5, 2026

What Is a IOU Form?

An IOU is the simplest debt document there is — a written acknowledgment that one person owes a stated sum to another. It is the paper version of "I owe you," and its whole purpose is to remove any argument about whether a debt exists and how much it is. This version goes slightly further than a bare IOU by adding a repayment date, an optional installment schedule, and a signature line, which is what makes it practical rather than symbolic.

An IOU is not the same thing as a promissory note. A note contains an express, unconditional promise to pay on defined terms and is generally enforced as a negotiable instrument; an IOU mainly evidences that a debt exists. Courts will usually enforce a clear signed IOU as evidence of a loan, but if the amount is significant, or interest and default remedies matter, a promissory note or full loan agreement is the better instrument.

When to Use This Template

  • You lent a modest amount and want a same-day written record of it
  • A friend or coworker owes you money and you want the amount and date confirmed
  • You are documenting a small advance until a fuller agreement can be prepared
  • A shared expense, deposit, or reimbursement needs to be acknowledged in writing
  • You need something a person can sign on the spot, on paper or on a phone
  • The amount is small enough that a full loan agreement would be more paperwork than it is worth

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Full text of the template. Fields in [BRACKETS] are placeholders you fill in.

IOU Form

  1. 1. 1. IOU

    IOU (Acknowledgment of Debt). Date: [DATE]. Amount: [AMOUNT IN NUMBERS] ([AMOUNT IN WORDS] dollars). I, [DEBTOR NAME], residing at [DEBTOR ADDRESS], acknowledge that I owe [CREDITOR NAME], residing at [CREDITOR ADDRESS], the amount stated above. This document is written evidence of that debt and of my agreement to repay it on the terms set out below.

  2. 2. 2. Reason for the Debt

    This amount is owed because of the following: [REASON FOR THE DEBT, e.g., cash lent on [DATE], payment made on my behalf to [THIRD PARTY], my share of a shared expense, reimbursement for goods purchased]. The funds or value were received by me on [RECEIPT DATE] by [METHOD, e.g., cash, bank transfer, direct payment to a third party]. I confirm that this amount is a debt and not a gift, and that no part of it has already been repaid except as noted here: [PRIOR PAYMENTS, if any].

  3. 3. 3. Repayment Date

    I will repay the full amount on or before [REPAYMENT DATE]. If a payment schedule is used instead of a single payment, the schedule in Section 4 controls and the date above is the final payoff date. If no date is filled in, the amount is payable within [DEMAND PERIOD, e.g., 15 days] after the creditor asks for it in writing. Payment will be made by [PAYMENT METHOD, e.g., bank transfer, cash with receipt, check] to [PAYMENT DETAILS], and is considered made when the funds are actually received.

  4. 4. 4. Payment Schedule (optional)

    If the debt is being repaid over time, I will pay [INSTALLMENT AMOUNT] every [FREQUENCY, e.g., week, two weeks, month], beginning on [FIRST PAYMENT DATE], until the full amount is repaid. Each payment will be recorded by both parties, and either party may request a running total of what has been paid and what remains. Payments are applied to the balance in the order received. Paying more than the scheduled amount, or paying the balance in full early, is allowed at any time and reduces the total owed.

  5. 5. 5. Interest

    Select one. No interest: this debt does not carry interest, and only the amount stated in Section 1 is payable. Interest: this debt accrues simple interest at [INTEREST RATE] percent per year from [INTEREST START DATE] until paid in full, and the total payable is the principal plus that interest. Any interest charged will not exceed the maximum rate permitted by law in the State of [STATE], and any excess will be applied to the principal or refunded. If nothing is selected, this IOU is interest-free.

  6. 6. 6. Late Repayment

    If the amount is not repaid by the date in Section 3, or if a scheduled installment is more than [GRACE PERIOD, e.g., ten days] late, the creditor may ask for the entire remaining balance immediately. A late charge of [LATE FEE, e.g., none] applies, to the extent permitted by law. Accepting a late or partial payment does not mean the creditor gives up the right to be paid in full or to insist on the remaining dates. If I expect to be late, I will tell the creditor in writing before the due date.

  7. 7. 7. Collection

    If this debt is not repaid and the creditor has to take steps to collect it, I will pay reasonable collection costs and court filing fees to the extent allowed by law. The creditor may bring a claim in small claims court if the amount is within the limit for that court in [COUNTY AND STATE], or in any other court of competent jurisdiction. Before filing any claim, the creditor will send me one written reminder at the address or email listed in this document and allow at least [REMINDER PERIOD, e.g., 14 days] to respond.

  8. 8. 8. No Other Conditions

    My obligation to repay this amount does not depend on any other event, and I am not relying on any promise that is not written in this document. This IOU replaces any earlier verbal statement about the same money. Any change to the amount, the date, or the schedule must be written down and signed or clearly confirmed in writing by both of us; a text message or email counts only if both parties confirm it. If any part of this document cannot be enforced, the rest still applies.

  9. 9. 9. Receipt and Release on Payment

    When the full amount has been repaid, the creditor will sign the acknowledgment below, return this document to me or provide a written confirmation that the debt is paid, and make no further claim relating to it. PAID IN FULL: I, [CREDITOR NAME], confirm that the amount above has been repaid in full as of [PAYOFF DATE]. Creditor signature: ______________________. Date: [DATE]. Both parties should keep a copy of this page after payoff.

  10. 10. 10. Governing Law

    This IOU is governed by the laws of the State of [STATE], and any claim relating to it will be brought in the courts located in [COUNTY AND STATE]. Both parties agree to try to resolve any disagreement directly before filing anything. This document binds our heirs and personal representatives. If the debtor dies before repayment, the remaining balance becomes a claim against the estate of the debtor unless the creditor waives it in writing.

  11. 11. 11. Signatures

    I have read this document and sign it voluntarily. DEBTOR: [DEBTOR NAME]. Signature: ______________________. Date: [DATE]. Phone: [DEBTOR PHONE]. Email: [DEBTOR EMAIL]. CREDITOR (acknowledging receipt of this IOU): [CREDITOR NAME]. Signature: ______________________. Date: [DATE]. WITNESS (optional but useful): Signature: ______________________. Printed Name: [WITNESS NAME]. Date: [DATE].

  12. 12. Disclaimer

    This template is provided for general informational purposes only and is not legal advice. An IOU is a simpler instrument than a promissory note and may be treated differently by a court, particularly on questions of interest, enforceability, and the applicable statute of limitations, all of which vary by state. For larger amounts, a promissory note or full loan agreement offers stronger protection. Review and adapt this document for your own situation and consult a licensed attorney before relying on it. Use of this template does not create an attorney-client relationship with ScanContract.

Key Clauses Explained

What each important clause does — and what to watch out for before you sign.

Acknowledgment of the Amount

States the exact sum owed in both numbers and words so the figure cannot be misread or altered.

Debtors should confirm the number matches what was actually received, since the written amount will control later. Creditors should write the amount in words as well as figures, which is the single easiest way to prevent an altered document from being argued over.

Reason for the Debt

Explains where the debt came from and confirms it was not a gift.

A bare IOU with no explanation is much easier to challenge as a gift, a repayment already made, or a misunderstanding. Creditors should name the date and method of transfer. Debtors should make sure any amount already repaid is listed, because this document supersedes earlier conversations.

Repayment Date

Sets a specific deadline, or makes the amount payable on written demand.

Leaving the date blank makes the IOU payable on demand, which starts the limitations clock differently and can catch a debtor off guard. Debtors should prefer a fixed date they can plan around. Creditors should avoid vague timing like "when possible," which is exactly what makes small debts uncollectible.

Interest Election

Records whether interest applies, defaulting to none if nothing is selected.

Creditors who expect interest have to write it down — silence means the debt is interest-free. Debtors should check the rate against the state usury cap, since a casual document does not exempt an excessive rate. For anything above a modest sum, a promissory note handles interest more reliably than an IOU.

No Other Conditions

Confirms repayment is not contingent on anything else and that the document replaces prior verbal terms.

Debtors relying on a side understanding — that repayment happens only after a job starts, or only if a deal closes — must get it written into the document, because this clause eliminates it. Creditors benefit from keeping this language, as it removes most improvised defenses.

Receipt and Release on Payment

Gives the debtor written proof that the debt is settled once it has been repaid.

Debtors should insist on getting the signed payoff line or the original document back, since an outstanding IOU in someone else hands can be presented again years later. Creditors should sign it promptly, and both parties should keep a scan of the completed page permanently.

Frequently Asked Questions

Is an IOU legally binding?
A signed IOU is generally treated as written evidence of a debt and can be enforced in court, especially where it names the parties, the amount, the reason, and a repayment date. It is weaker than a promissory note because it acknowledges a debt rather than containing a formal unconditional promise to pay on defined terms. For small amounts a clear IOU is usually sufficient, and adding the details in this template makes enforcement considerably easier.
What is the difference between an IOU and a promissory note?
An IOU records that money is owed. A promissory note contains an express promise to pay a specific sum on specific terms and typically adds interest, late charges, default events, acceleration, and the right to transfer the debt. Notes are also treated as negotiable instruments in many cases, which strengthens enforcement. If the amount is significant or the repayment is spread over a long period, use a promissory note.
Does an IOU need to be notarized or witnessed?
No. A signature from the debtor is what makes the document meaningful, and notarization is not required for enforceability in ordinary circumstances. A witness signature is still worth collecting when convenient, since it makes it harder to claim the signature was forged or that the debtor did not understand what was signed. Keeping proof of the underlying transfer matters more than notarization.
Can I charge interest on an IOU?
You can, but only if it is written into the document — an IOU with no interest term is interest-free. If you do charge interest, keep the rate within the usury limit of your state and state the start date and whether it is simple interest. For anything more than a nominal amount of interest, a promissory note is the more appropriate document.
How do I collect on an unpaid IOU?
Send a written reminder to the address or email in the document, keep a copy, and give a reasonable deadline. If that does not work, small claims court is designed for exactly this situation and does not require a lawyer, though each state sets a dollar limit on what can be filed there. Bring the signed IOU, proof that the money changed hands, and a record of any partial payments.

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