Can I sue someone who owes me money?
Yes. Most informal loans are recoverable in small claims. A loan, IOU, or money advance that was supposed to be paid back is a contract claim. Written contracts are easiest, but verbal agreements work too — and even loans with no explicit agreement at all can be recovered (the law calls these 'unjust enrichment' or 'promissory estoppel' cases). The key evidence: proof you transferred the money, proof they agreed to repay, and proof they didn't. Small claims is built for this kind of case.
What kinds of loans can you sue to recover?
Four scenarios. Each is recoverable under different legal theories.
Written loan with signed agreement
Easiest case. Signed IOU, promissory note, or written agreement showing the amount, terms, and repayment date. You usually have 4 to 6 years to sue.
Verbal loan with proof of transfer
The most common informal loan. Bank transfer, Venmo/Zelle/Cash App, money order, or a witness to the cash exchange. Texts or emails that mention the loan also help establish the agreement.
Loan with no explicit agreement
You paid for something on the borrower's behalf, or transferred money expecting repayment, but you never wrote anything down. Even without an explicit agreement, the law lets you sue to prevent them from keeping money they didn't earn (called 'unjust enrichment').
Promised payment that never came
They asked for the money, promised to pay back, and never did. The promise itself is what you sue on — the law calls this 'promissory estoppel.' Even without a contract, you can recover when you relied on their promise and got hurt as a result.
How much can you claim?
The original loan amount is the floor. Pre-judgment interest, late fees (if agreed), and filing fees stack on top.
Original loan amount
The principal — the actual money you transferred. Bank statements, cancelled checks, Venmo/Zelle/Cash App receipts, or witness testimony to cash exchange establish the amount.
Interest from when it should've been paid back
Most states let you claim interest at the state default rate (typically 7 to 10% per year), running from when repayment was due. On a $4,000 loan that's been unpaid for 3 years, that's roughly $840 to $1,200 in extra interest.
Filing fees, post-judgment interest
Filing fee, service-of-process cost. Post-judgment interest accrues until paid. Some states also allow attorney fees if specified in a written contract.
$4,000 loan plus 3 years of pre-judgment interest at 10 percent, plus filing fee.
Send a demand letter first.
Most informal loan disputes settle once a demand letter arrives. The letter serves three purposes: it documents the loan and your demand, shows you're serious about going to court, and in some states pauses the filing-deadline clock.
- Date and amount of the loan
- How the money was transferred (bank record, Venmo, etc.)
- Original repayment terms (if agreed)
- Any prior demands or partial payments
- Pre-judgment interest calculation
- A 14-day deadline before you file
- Sent certified mail with return receipt
On January 14, 2023, I lent you $4,000 via bank transfer (record attached). You agreed to repay within 6 months. As of today, no portion has been repaid. Three years and four months have passed since the original due date.
Per the breach of our oral agreement, I demand within fourteen (14) days:
- Repayment of $4,000 in original principal;
- Pre-judgment interest at 10 percent per year for 3 years ($1,200).
Total demand: $5,200.00. If unresolved, I will file in Small Claims Court.
How to file a money-owed case.
Four steps. Documentation of the transfer plus the agreement is the spine.
Gather the evidence
Bank records of the transfer. Texts or emails referring to the loan. Witness contact info if cash. Any partial-payment records. The transfer plus agreement is the case.
Send the demand letter
Certified mail with return receipt. Most loan disputes settle here. The certified-mail receipt also documents the demand for the lawsuit.
File in small claims
If demand fails, file. Filing fees usually run $30 to $100. File in the county where the borrower lives.
Hearing
Lead with the transfer evidence and any written agreement. Hearings usually run 10 to 15 minutes.
Collecting from a borrower.
Money judgments enforce via judgment lien on real estate, bank levy, and writ of execution on personal property. Wage garnishment is also available in most states. Judgments accrue post-judgment interest and stay valid for 10 to 20 years.
What evidence do you need to sue?
Proof of transfer plus proof of agreement are the case.
Outgoing wire transfer of $4,000 to Jordan Borrower (Account 5678).
Reference: 'Personal loan — repay within 6 months per agreement.'
Status: Confirmed. Available 01/15/2023.
Oral contract / breach of oral agreement
An action for relief from oral or unwritten contract shall be commenced and prosecuted within three years after the cause of action accrues.
Loan due July 2023. 3-year statute runs July 2026. This case is filed within the deadline.
Common borrower defenses, with rebuttals.
Three arguments cover most loan cases.
Keep it simple. Organized records, clear timelines, and solid evidence are your best defense.
How much do lenders actually recover?
Typical recovery in informal loan cases. Documentation strength drives the outcome.
Partial recovery. Court awards a portion when documentation is light or terms are disputed.
Full principal plus modest interest. Most common when transfer is documented and texts confirm the agreement.
Cap-of-court awards. Larger written-loan cases with full principal, interest, and (with attorney-fee clauses) recovery of fees.
Better evidence. Better prep. Better outcome. Your documentation makes the difference.
What are the alternatives to small claims?
Demand letter usually works first. Small claims is the backup.
Demand letter alone
Free, low-frictionWhen it fits: informal loan with documentation. Most disputes settle within 14 days of a real demand letter.
Tradeoff: no enforcement if borrower ignores. Court is the next step.
Mediation
Low-cost, preserve relationshipWhen it fits: you want to recover but maintain the relationship. Most communities offer mediation services for $50 to $200.
Tradeoff: no enforcement; only effective if borrower participates.
Small claims (this guide)
Best for enforced recoveryWhen it fits: demand letter failed. Damages within your state's cap.
Tradeoff: 30 to 90 day timeline. Filing fee $30 to $100.
Recover the loan.
Most loan disputes settle once a real demand letter arrives. Our generator builds yours in under two minutes.
Illustrative. Larger loans push to small-claims cap; bigger ones need higher courts.
Frequently asked.
The questions lenders actually ask before filing. Email support if yours isn’t here.
Can I sue someone for a loan if I don't have a written agreement?
Yes. Oral contracts are enforceable in most states for amounts under a state-specific threshold (often $500 to $5,000 — anything above usually requires writing under the Statute of Frauds for some loan types). Even without a contract, unjust enrichment and promissory estoppel are alternative theories.
How do I prove I lent someone money?
Bank transfer record, Venmo/Zelle/Cash App receipt, cancelled check, or money order receipt. Plus texts, emails, or social-media messages referring to the loan. The transfer plus the agreement (even informal) is the case.
What if I lent cash with no record?
Witness testimony to the exchange, ATM withdrawal records on the same day, and any subsequent texts or emails referring to the loan are still admissible. Cash cases are harder but not impossible. The borrower's own words in writing about repayment are decisive.
How long do I have to sue?
Written contracts: 4 to 6 years in most states (some up to 10). Oral contracts: 2 to 4 years. Promissory estoppel: usually 2 to 3 years. The clock starts on the due date or the date you first demanded repayment. Move fast.
Can I charge interest on the loan?
Yes if agreed in advance. Without agreement, you can claim pre-judgment interest at the state legal rate (typically 7 to 10 percent per year) running from the demand date. Higher contractual interest may be limited by state usury laws.
What if the borrower says they'll pay but never does?
Repeated promises followed by non-payment is the most common pattern. Each broken promise extends the demand period but does not defeat the claim. Document the promises in writing (texts, emails). The pattern strengthens the case.
What if I can't find the borrower?
Search public records for current address. Service of process can be by sheriff or process server at the last known address. If service fails, some states allow service by publication after diligent search. Without service, the case cannot proceed.