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.
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.
Illustrative ranges based on statute. Your actual recovery depends on facts, evidence, and the judge.
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.
Send a Demand Letter.
- 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
1424 Maple Lane, Phoenix, AZ 85003
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).
“The letter alone got them to settle in under two weeks.”
How to file a money-owed case.
Four steps. Documentation of the transfer plus the agreement is the spine.
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.
Certified mail with return receipt. Most loan disputes settle here. The certified-mail receipt also documents the demand for the lawsuit.
If demand fails, file. Filing fees usually run $30 to $100. File in the county where the borrower lives.
Lead with the transfer evidence and any written agreement. Hearings usually run 10 to 15 minutes.
What evidence do you need to sue?
Proof of transfer plus proof of agreement are the case.
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.
Someone Owes Me Money rules, by state.
Top 10 states by case volume, highlighted in red. Each row shows that state's deadline to sue and statutory penalty for this claim.
What if your case is over your state’s cap?
Small claims caps vary state to state. If your claim is larger, you have two options.
Stay in small claims and forfeit anything above your state's cap. Fast, cheap, no lawyer. Most plaintiffs in this situation pick this.
Pursue the full amount in regular civil court. Slower, costlier, lawyer recommended.
What are the alternatives to small claims?
Demand letter usually works first. Small claims is the backup.
When 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.
When 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.
When 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.
This page is general legal information about personal loan disputes, not legal advice. CivilCase is not a law firm and does not represent you. Consult a licensed attorney in your state for advice about your specific situation.
Someone Owes Me Money questions.
The questions lenders actually ask before filing.
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.