Writing a Promissory Note for a Personal Loan (With Sample)

Key Takeaways

• What a promissory note is: A written, signed promise to pay a fixed amount of money on demand or by a set date. Notes can be “negotiable instruments” when they meet UCC Article 3 requirements. Legal Information Institute+1

  

• When you need one: Any time you lend or borrow outside a bank — between friends, family, coworkers, or businesses — especially for amounts where memories fade or relationships matter.

• Core clauses to include: Parties, principal, interest rate, repayment schedule, maturity date, prepayment, late fees, default and acceleration, collateral and security agreement (if any), guaranty, governing law, notices, and signatures.

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  Interest and taxes: Set a reasonable annual percentage rate and understand that loans below the IRS Applicable Federal Rate (AFR) can trigger “imputed interest” under Internal Revenue Code §7872. IRSLegal Information Institute

• Secured vs. unsecured: If you want collateral, pair the note with a security agreement and consider filing a UCC-1 financing statement to perfect your interest in personal property. Some collateral types require special steps. Legal Information Institute+2Legal Information Institute+2

• Notarization and witnesses: A note must be in writing and signed by the borrower; notarization and witnessing rules vary by state but can add evidentiary strength. Legal Information InstituteUpCounsel

• Time limits to sue: Statutes of limitations differ widely by state and debt type (often 3–10 years for written agreements). InCharge Debt SolutionsNational Debt Relief

Download WEBP checklist: 14 Clauses Every Promissory Note Needs

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What is a Promissory Note?

A promissory note is a written, signed promise to pay a fixed sum to a named party, either on demand or at a definite time. When a note is payable to order or bearer, unconditional, and states a fixed amount with or without interest, it can qualify as a negotiable instrument under UCC Article 3, which provides useful enforcement rules. Legal Information Institute+1

Promissory note vs. IOU vs. loan agreement:

• An IOU acknowledges a debt but often lacks the repayment terms that make enforcement simple.

• A promissory note states the actual promise to pay and the key terms.

• A loan agreement is usually longer and may include covenants and representations in addition to the note.
  For most personal loans, a well-drafted note does the job.

Choose Your Structure: Types of Notes

• Installment note: Fixed payments on a schedule (monthly or biweekly) until paid.

• Interest-only with balloon: Periodic interest payments, full principal due at maturity.

• Demand note: Payable whenever the lender demands; use carefully and define how demand is given.

• Secured vs. unsecured: A secured note references collateral and a separate security agreement; an unsecured note relies solely on the borrower’s promise.
  If you secure personal property (for example, a car that is not title-controlled equipment, tools, inventory), you typically perfect the lender’s interest by filing a UCC-1 financing statement with the appropriate state office; some collateral, like vehicles covered by a certificate of title, may require compliance with title laws rather than (or in addition to) a UCC filing. Legal Information Institute+2Legal Information Institute+2

The 14 Clauses You Should Include (and Why)

1. Parties – Full legal names and mailing addresses for Lender and Borrower.

2. Principal – Exact amount in numbers and words.

3. Interest Rate (APR) – Fixed or variable, how it accrues and compounds.

4. Repayment Schedule – Due dates, frequency, and payment amount or calculation method.

5. Maturity Date – When any remaining balance must be paid in full.

6. Amortization & Application of Payments – Interest-only vs. amortizing; how partial payments apply.

7. Prepayment – Whether extra payments are allowed without penalty.

8. Late Charges & Returned-Payment Fees – Grace period and fee amounts.

9. Default & Acceleration – What counts as default; lender’s right to demand the full balance.

10. Collateral (if any) – Specific description of pledged assets; reference the attached security agreement and filing of a UCC-1 if applicable. Legal Information Institute

11. Guaranty (optional) – Another person promises to pay if the borrower does not.

12. Representations (lightweight) – Borrower owns collateral and is not violating other agreements.

13. Governing Law & Venue – Which state’s laws apply and where disputes are resolved.

14. Notices, Signatures, Witness/Notary Blocks – How to send notices; signatures; add a notary and witness lines if your state or your comfort level calls for it. While notarization is often optional, it can strengthen evidentiary reliability; check state rules. UpCounsel

Pro tip: Keep language simple and specific. Courts interpret clarity, not poetry.

Setting a Fair Interest Rate (and Staying Tax-Smart)

• Pick a commercially reasonable APR. For family loans, charging at least the IRS Applicable Federal Rate (AFR) helps avoid “below-market loan” problems, where the IRS can impute interest income to the lender and treat part of the arrangement as a gift. AFRs change monthly; check the current table before you sign. IRSLegal Information Institute

• Mind usury limits. States cap interest rates in different ways depending on the loan type and lender; check your state’s statute or talk to a lawyer.

• Document accrual and compounding clearly. State whether interest is simple annual interest or compounds monthly.

Securing the Loan With Collateral

If you want the right to take and sell specific assets after default, pair the note with a security agreement that describes the collateral and the borrower’s grant of a security interest. To put the world on notice and secure your priority, file a UCC-1 financing statement in the proper state (usually where the individual borrower is located). Be aware that some collateral is perfected differently — for example, property covered by certificate-of-title statutes — and Article 9 has special rules for those categories. Legal Information Institute+2Legal Information Institute+2

Notarization, Witnesses, and Time Limits

A promissory note must be in writing and signed by the borrower. Notarization and witnessing are often not strictly required for validity, but they can reduce disputes over authenticity. Requirements vary by state; adding a notary block is a low-cost way to strengthen your paper trail. Legal Information InstituteUpCounsel

If things go south, your window to sue is limited by your state’s statute of limitations for written contracts or notes — commonly ranging from three to ten years depending on jurisdiction and debt type. Consult your state’s rule before relying on a very old note. InCharge Debt SolutionsNational Debt Relief

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Step-by-Step: How to Write Your Note

1. Title it “Promissory Note.” Add the date and city/state.

2. Identify the parties with full legal names and mailing addresses.

3. State the principal in numbers and words.

4. Set the APR and describe accrual and compounding in plain terms.

5. Choose the repayment method and include the due day of each month or a demand clause.

6. Add default, late fee, and acceleration language.

7. If secured, attach a security agreement and plan your UCC-1 filing. Legal Information Institute

8. Choose governing law, venue, and notice methods.

9. Add signature blocks for borrower, lender, any guarantor, and an optional notary/witness.

10. Attach any amortization schedule and deliver signed copies to both parties.

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Real-Life Example

You lend your cousin $6,000 to repair a work van so he can keep contracts flowing. You write a one-page note with 8% APR, twenty-four monthly payments due on the 15th, a 10-day grace period, and a $25 late fee. Because the van is essential and has a clean title, you secure the loan with the van and file a UCC-1. Two years later, you both have clarity: either he pays as promised or you have a perfected interest in the collateral. Legal Information Institute

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Copy-Ready Promissory Note Sample (Personal Loan)

Promissory Note
Date: [Month Day, Year]
Place of Execution: [City, State]

1. Parties
Borrower: [Borrower full legal name], [Mailing address]
Lender: [Lender full legal name], [Mailing address]

2. Principal
For value received, Borrower promises to pay Lender the principal sum of [Amount in numbers] ([Amount in words] Dollars).

3. Interest
Interest accrues on the outstanding principal at an annual rate of [APR]% [simple interest compounding monthly]. Interest begins on the date of this Note.

4. Payments
Borrower will pay [payment amount] on the [day] of each [month/biweekly period], beginning [first due date], until principal and accrued interest are paid in full.

5. Maturity
Any unpaid principal and accrued interest are due in full on [Maturity date].

6. Prepayment
Borrower may prepay all or part of the balance at any time without penalty. Prepayments apply first to accrued interest, then to principal.

7. Late Charges
If any payment is more than [__] days late, Borrower will pay a late charge of [$_ or _% of the overdue amount], in addition to the overdue payment.

8. Default and Acceleration
If Borrower fails to pay any amount when due, becomes insolvent, or breaches this Note or any related agreement, Lender may declare the entire unpaid balance immediately due.

9. Collateral (if applicable)
This Note is secured by a separate Security Agreement describing the following collateral: [Collateral description]. Borrower grants Lender a security interest in the collateral. Lender may file a UCC-1 financing statement. Legal Information Institute

10. Guaranty (optional)
[Guarantor name] unconditionally guarantees payment of this Note upon Borrower’s default.

11. Governing Law and Venue
This Note is governed by the laws of the State of [State]. Venue for any dispute lies in [County, State].

12. Notices
Notices must be in writing and delivered by certified mail, recognized courier, or email with confirmation, to the addresses listed above.

13. Miscellaneous
No waiver is effective unless in writing. If any provision is invalid, the rest remains enforceable. This Note may be signed in counterparts and electronically.

14. Signatures
Borrower: ___________________________ Date: ___________
Name: [Borrower name]

Lender: _____________________________ Date: ___________
Name: [Lender name]

Witness (optional): __________________ Notary (optional): __________________
A notary acknowledgment may be attached according to state law. UpCounsel

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FAQ

Do I need to notarize the note?
Not always. A valid note is a written, signed promise. Notarization can add proof of identity and deter disputes; some states or specific situations may require it. Legal Information InstituteUpCounsel

How do I keep the IRS happy for family loans?
Charge at least the monthly AFR for the loan’s term category to avoid imputed interest. Document the rate and keep a copy of the current AFR table with your file. IRS

What if a payment is missed?
Follow the late-fee and default process in your note. If you secured collateral and perfected the interest properly, you may have remedies against the collateral under Article 9. Legal Information Institute

Can I forgive the loan later?
Yes, but debt forgiveness can have gift-tax or income-tax implications. Speak to a tax professional first. Legal Information Institute

How long do I have to sue if there is a breach?
It depends on your state and the type of debt. Many states fall between three and ten years for written contracts or notes. InCharge Debt SolutionsNational Debt Relief

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Sources and Further Reading

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Final Thoughts

A promissory note protects both sides: the lender knows exactly how and when they will be repaid; the borrower knows the expectations and avoids misunderstandings. Use the sample above, tailor the blanks to your facts, and add the optional security and notary steps that fit your situation. If the loan or collateral is substantial, a short consult with a local attorney can save far more than it costs.

Disclaimer: This article is for general educational purposes and is not legal or tax advice. Laws vary by state and situation. Consult a qualified professional about your specific loan.