The short answer
A demand letter states a claim, explains what the sender wants, and sets a deadline to respond. It is usually the first formal step in a dispute and often the moment that shapes how the other side, and its insurer, evaluates the case.
Why it matters
A well-built demand can resolve a dispute without a lawsuit. A careless one can lock in a weak position, reveal strategy, or start a fight the sender is not ready to finish.
Where it fits in your case
Before filing suit, after informal efforts have stalled, and sometimes as a requirement under the contract or a statute.
What to expect
What it should include. The facts, the legal basis, the amount or relief demanded, and a reasonable deadline.
Settlement communications. Settlement offers are generally not admissible to prove liability, but factual statements in a letter can still matter later.
Notice requirements. Some contracts and statutes require specific notice before suit, and a demand letter may satisfy or miss those requirements.
Insurance. A demand may trigger the recipient’s duty to notify its insurer, which can change the dynamics.
Tone. Overstatement and threats tend to harden positions and can undermine credibility.
What to do now
Gather the contract, invoices, and key communications first.
Check for required notice provisions or deadlines.
Make a demand you can support with evidence.
Preserve your own documents before sending.
What we need from you
The contract, invoices, correspondence, and a clear statement of what you want to achieve.
Common misconceptions
“A tougher letter gets a better result.” Credible, specific letters usually do better.
“Sending a demand commits us to suing.” It does not, but empty deadlines weaken leverage.