A demand letter is a formal written request asking someone to pay money they owe you, or to do or stop doing something, by a set deadline — and telling them what you will do next if they don’t, usually file in small claims court or take other legal action. It is the step most disputes go through before anyone sees a courtroom.
What a demand letter is for
A demand letter does three jobs at once:
- It states your claim in writing. The other side can no longer say they didn’t know what you wanted, how much, or why.
- It gives them a fair chance to resolve it. Paying or negotiating is usually cheaper for both sides than going to court, and a clear deadline makes that choice concrete.
- It creates a record. If the dispute goes further, the letter and your proof of delivery show a judge that you tried to settle it first.
In some situations a written demand is more than good practice. Massachusetts’ consumer protection law (Chapter 93A), for example, requires a written demand for relief at least 30 days before a consumer files suit under it, which is why people search for a “93A demand letter”. Check whether a rule like that applies to your claim.
What a demand letter looks like
Most demand letters follow the same structure, whatever the dispute:
- Your name and address, the date, and the recipient’s name and address.
- A subject line that states the demand, such as Demand for payment of $2,400.
- A short, factual account: what was agreed, what happened, and when.
- The exact amount or action you want, and how you arrived at it.
- A firm deadline, typically 10 to 30 days.
- What you will do if the deadline passes.
- Your signature, and a list of the documents you enclose.
A short example of the core paragraph:
On March 3, 2026, you agreed in writing to replace the roof at 14 Elm Street for $9,500, which I paid in full. The work was left unfinished on April 18 and water has since damaged the upstairs ceiling. I am requesting a refund of $2,400 for the unfinished work, as itemized in the enclosed estimate, by May 20, 2026. If I have not received payment by that date, I intend to file a claim in small claims court.
The step-by-step writing guide covers each part in detail, and the demand letter generator builds a complete letter for your state and dispute type.
Who can send a demand letter?
Anyone can. You do not need a lawyer to write or send a demand letter, and most small-money disputes — an unpaid invoice, a withheld security deposit, a contractor who walked off the job — are handled by the person owed the money.
A demand letter from an attorney is the same document sent by a lawyer on behalf of a client, on law-firm letterhead. They are common in personal injury claims, where the attorney sends the demand to the at-fault party’s insurer with medical records and a settlement figure. If you receive one, don’t ignore it: read it carefully, note the deadline, and consider getting legal advice before you respond.
Is a demand letter legally binding?
No. A demand letter is not a court order and does not force anyone to pay. Its power comes from what it signals — that you are organized, have documented your claim, and are ready to take the next step. What you write in it can be used as evidence later, though, so keep it factual and professional. Avoid threatening criminal charges to get paid a civil debt; in many states that can itself be unlawful.
How long after a demand letter can you expect a settlement?
It depends mostly on the deadline you set and the kind of dispute:
- Payment disputes (unpaid invoices, deposits, refunds) tend to resolve inside the deadline or not at all. If the deadline passes in silence, waiting longer rarely helps — your next step is the one you named in the letter.
- Insurance and personal injury claims take longer. The insurer reviews the records, may ask for more, and often answers with a counteroffer, so settling can take several rounds over weeks or months.
Whatever you are waiting for, a demand letter does not pause the legal deadline for filing your claim. The statute of limitations keeps running. See what happens after you send a demand letter for how to handle each kind of response.
How much does a demand letter cost?
Writing your own costs little more than postage — sending it by certified mail with a return receipt is worth the few dollars for proof of delivery. Hiring a lawyer to write one typically costs $100–$500+. Drafting, copying, printing and downloading a plain-text letter with Demand Letter Kit is free; a formatted PDF + editable Word download is optional at $6.50.
When a demand letter is the right first step
Send one when you know who owes you, how much, and why, and you can show it with documents. It is not a substitute for legal advice where the stakes are high, the law is complicated, or a filing deadline is close. Browse demand letters by type to see what to include for your situation.