How to Write a Demand Letter in Louisiana: Contents, Delivery, and Claim Types

To write a demand letter in Louisiana that actually protects your rights, match the letter to the specific statute that governs your claim. Louisiana treats a proper written demand as the event that unlocks delay damages, attorney fees, and statutory penalties, so the content, delivery method, and response window all need to track what the law requires for your situation. Get those pieces right and the letter does real legal work. Get them wrong and you can win the case while losing the money the statute would otherwise have given you.

What the Letter Must Contain

Every effective demand letter in Louisiana carries the same core pieces, regardless of the claim behind it.

Full legal names and addresses of both sides. For a business, use the registered name.
A clear, chronological statement of facts. Stick to what you can prove; the letter may end up as an exhibit.
The legal basis for the claim. Cite the contract provision breached or the statute invoked. Louisiana courts expect that specificity.
The exact amount demanded, broken out by principal, interest, service charges, and other damages where you can. Under Revised Statutes 9:2781, the demand must “correctly set forth the amount owed” to preserve attorney fee recovery on an open account.¹
A specific response or payment deadline that matches any statutory window that applies (30 days for open accounts, 15 working days for bounced checks).
A plain statement that you intend to pursue legal action if the demand isn’t met, including the statutory penalties the recipient faces.

Keep the tone firm and professional. Threats beyond what you can legally pursue, inflated damages, or hostile language weaken credibility if a judge later reads the letter.

How to Deliver It

Louisiana does not impose one delivery rule for every demand. The method depends on the claim.

Bounced check demands must go by certified or registered mail to the address shown on the check. Regular mail will not preserve your right to double damages under R.S. 9:2782.²
Open account demands can go by first-class mail to the debtor’s last known address, and a copy is admissible as evidence. The debtor does not have to actually receive it.¹
Insurance claim demands have no prescribed method, but the insurer must receive “satisfactory written proofs and demand.” Certified mail with return receipt is the strongest proof of the delivery date.
General contract disputes have no statutory delivery rule. Certified mail with return receipt is the safe default.

Even where regular mail is allowed, certified mail with return receipt is almost always worth the extra cost. The signed receipt removes any argument about when the clock started.

Match the Letter to Your Type of Claim

This is where most of the work happens. The statute behind your claim tells you what the letter needs to say and what it buys you.

Open Accounts (Unpaid Invoices and Professional Fees)

Revised Statutes 9:2781 governs any account with a past-due balance, including professional services like legal and medical work. Send a proper written demand that correctly sets forth the amount owed, give the debtor 30 days, and if they do not pay you become entitled to reasonable attorney fees on top of the judgment.¹ Filing and serving the lawsuit also counts as written demand under the statute, but then the debtor gets a short post-service window to pay without owing fees (10 days in city courts, 15 days in all other courts). Sending the letter first is almost always better: you keep the 30-day lead and avoid giving the debtor a second chance after service.

Dishonored Checks

Revised Statutes 9:2782 sets a tightly scripted process for bad checks, and the payoff is steep. Send the demand by certified or registered mail to the address on the check. The notice must identify the check number, date, bank, payee, and total amount due including service charges. The writer then has 15 working days to pay. If they don’t, they owe double the amount (floor of $100), attorney fees, and court costs, and you can add a service charge of $25 or five percent of the check’s face amount, whichever is greater.² Miss a required element or use regular mail and the double-damages penalty disappears.

Insurance Claims

Two statutes work in tandem. Under R.S. 22:1892, an insurer that fails to pay within 30 days after receiving satisfactory written proofs and demand, when the failure is arbitrary, capricious, or without probable cause, owes a penalty of 50 percent of the amount due plus proven economic damages, or $1,000, whichever is greater, along with reasonable attorney fees and costs.³ R.S. 22:1973 adds a broader good-faith duty with penalties that can reach double the claimant’s damages or $5,000, whichever is greater, and reaches specific misconduct like misrepresenting policy provisions or misleading a claimant about the prescriptive period.⁴

The phrase “satisfactory written proofs and demand” controls the result. The letter to the insurer should attach the full supporting documentation, not merely assert that money is owed. An incomplete submission gives the insurer an argument that the 30-day clock never started. Document the date proofs were submitted; that date drives the penalty analysis if the dispute reaches court.

General Contract Disputes and “Putting in Default”

For contract claims outside the specific statutes above, the demand letter’s job is to “put the other party in default” under the Civil Code. Article 1989 makes delay damages recoverable only from the moment the obligor is put in default; without that step, those damages are gone.⁵ Article 1990 distinguishes two situations: when the deadline for performance is fixed or clear from circumstances, default is automatic once the date passes; in every other case, you must affirmatively put the other party in default, and only after performance is actually due.⁶ A written demand is the standard mechanism, and the date you send it matters because that is when the delay-damages clock begins.

One trap on reciprocal contracts: Article 1993 bars you from putting the other side in default unless you have already performed your own obligation or stand ready to do so.⁷ Sending a demand while you yourself are in breach can unravel the whole effort.

What a Demand Letter Will Not Do

A demand letter does not interrupt prescription (Louisiana’s version of a statute of limitations). Under Civil Code Article 3462, prescription is interrupted by filing suit in a court of competent jurisdiction, not by sending a letter.⁸ If your deadline to file is close, do not rely on the letter to buy time. People lose claims this way.

A demand letter also does not manufacture rights that didn’t exist. It formalizes a position and triggers statutory consequences, but the underlying claim has to stand on its own. An unfounded demand can expose the sender to abuse-of-process claims or, in debt collection, to Fair Debt Collection Practices Act liability.

Mistakes That Forfeit Your Rights

The errors that sink Louisiana demand letters are almost always procedural.

Using regular mail for a bounced-check demand. That alone eliminates the double-damages penalty under R.S. 9:2782.
Stating the wrong amount on an open-account demand. Overstating or understating can defeat the “correctly set forth” requirement for attorney fees under R.S. 9:2781.
Demanding performance on a reciprocal contract while you are in breach of your own side, in violation of Article 1993.
Treating the letter as a stay on prescription. Only suit interrupts it.
Threatening or inflammatory language. The judge will read it.
Picking a generic deadline when the statute sets a specific one. Using 10 days when the statute gives 30 can create confusion about when your rights vest.

For claims that touch more than one statute or involve significant money, having a Louisiana attorney review the letter before it goes out is often worth the fee. The procedural traps are easy to fall into and impossible to fix after the fact.

1
Justia Law. Louisiana Revised Statutes 9-2781 – Open Accounts Attorney Fees
2
FindLaw. Louisiana Revised Statutes Title 9 Section 2782
3
Louisiana State Legislature. Louisiana Revised Statutes 22-1892
4
Justia Law. Louisiana Revised Statutes 22-1973 – Good Faith Duty Claims Settlement Practices
5
Justia Law. Louisiana Civil Code Art. 1989 – Damages for Delay
6
Justia Law. Louisiana Civil Code Art. 1990 – Obligor Put in Default
7
Justia Law. Louisiana Civil Code Art. 1993 – Reciprocal Obligations
8
Justia Law. Louisiana Civil Code Art. 3462 – Interruption by Filing