Does this rule apply if a consumer sues a business?

No. The demand letter certification requirement applies to commercial claims, which are claims brought by businesses. When a consumer sues a business, that is a regular small claim and this rule does not apply.

What happens if a business files without the demand letter certification?

The court may refuse the filing, adjourn the hearing, or dismiss the claim until the business complies. This means re-mailing the letter, waiting 10 days, and returning to court, which can add weeks or months of delay.

Does the demand letter have to be sent by certified mail?

No. The statute requires first class mail, not certified mail. Certified mail or other delivery confirmation can help with proof, but the certification form specifically asks about first class mail.

Where can I download the Demand Letter Certification form?

The fillable PDF is available from the New York Courts website at nycourts.gov. Search for Demand Letter Certification or ask the clerk at your local court.

How long do I have to wait after mailing the demand letter before filing?

At least 10 days. Many practitioners wait 11 or 12 days to avoid any dispute about the count. Do not cut it close.

Does this apply to business-to-business disputes?

Generally no. The consumer transaction requirement means the goods or services must have been primarily for personal, family, or household purposes. A business suing another business over a commercial deal is not a consumer transaction.

New York

New York Demand Letter Certification for Commercial Claims: What Businesses Must Do Before Filing

Q: What is the New York demand letter certification for commercial claims?

It is a court form certifying that the business mailed a demand letter to the consumer by first class mail at least 10 days before filing a commercial claim arising out of a consumer transaction. It is required under CCA Section 1803-A (NYC) and UCCA Section 1803-A (city courts outside NYC).

Q: What qualifies as a commercial claim arising out of a consumer transaction?

A commercial claim is a money claim filed by a business entity (corporation, partnership, or association). A consumer transaction is one where the goods or services were primarily for personal, family, or household purposes. When both are true, the certification rule applies. Examples include a contractor suing a homeowner or a dentist suing a patient.

Filed: 2026-03-23•Ref: DEMA

Written by Common Counsel Legal Team

Reviewed by

Common Counsel

Key Takeaways

1For many New York commercial claims based on consumer transactions, the business must mail a demand letter by first class mail at least 10 days before filing.
2The required court form is called Demand Letter Certification.
3This usually means a business suing a consumer over a personal, family, or household bill.
4Examples include contractor versus homeowner, dentist versus patient, gym versus member, and auto shop versus car owner.
5The rule does not apply when a consumer sues a business, and it usually does not apply to business-to-business disputes.
6Skip the mailing or the certification and the claim may be delayed, adjourned, or dismissed until you comply.

New York demand letter certification commercial claim: the short version

If a business files a New York commercial claim against a consumer, it generally must mail a demand letter by first class mail at least 10 days before filing and then file a Demand Letter Certification.

This comes from CCA Section 1803-A in New York City and UCCA Section 1803-A in city courts outside NYC, with similar consumer-protection versions in other local courts.

New York courts love forms. This is one they actually care about.

This rule is narrower than it looks

It is mostly for business-versus-consumer collection cases. Think contractor versus homeowner, dental office versus patient, gym versus member, auto shop versus car owner, or landscaper versus homeowner.

It is not for consumers suing businesses. And it is not the normal rule for business-to-business disputes.

What counts as a commercial claim arising out of a consumer transaction?

The phrase “commercial claim arising out of a consumer transaction” has two gates. You need both.

1. Commercial claim

A commercial claim is a money claim brought by a business entity. The statutes speak in terms of entities like corporations, partnerships, and associations.

In regular-person language, this means a business is trying to collect money. This is the business-side version of small claims.

If you file through some other structure, do not guess. Ask the clerk how your court will classify the case before you file. The label matters.

2. Consumer transaction

A consumer transaction means the goods or services were primarily for personal, family, or household purposes.

The word primarily matters. A kitchen remodel for a home is consumer. An office buildout for a restaurant is not. Repair of a family SUV is consumer. Repair of a delivery van for a bakery usually is not.

The claim also has to arise out of that consumer deal. In other words, the money dispute is about that personal-use transaction itself.

Quick test

Is the plaintiff a business trying to collect money?
Was the underlying deal mainly for personal, family, or household use?

If both answers are yes, the New York demand letter certification rule probably applies.

Examples where the rule usually applies

A contractor sues a homeowner for unpaid kitchen or bathroom work.
A dental office sues a patient for an unpaid treatment balance.
A gym sues a member for unpaid membership fees.
An auto repair shop sues a car owner for repair bills on a personal vehicle.
A landscaper sues a homeowner for unpaid work at a residence.

Examples where the rule usually does not apply

A homeowner sues a contractor for bad work or for a refund. That is the consumer suing the business.
A patient sues a dentist for malpractice or overbilling. Again, consumer versus business.
A marketing agency sues a restaurant for unpaid invoices. That is business-to-business.
A supplier sues a store for unpaid inventory. Also business-to-business.

What the law requires before filing

The claimant must send a demand letter by first class mail to the defendant at least 10 days before filing the claim.

Then the claimant files a Demand Letter Certification with the court saying that mailing happened.

In New York City, the source is CCA Section 1803-A. In city courts outside NYC, the source is UCCA Section 1803-A. Same basic idea.

The official fillable form is available from nycourts.gov.

Exhibit

Demand Letter Certification (official NY Courts PDF)

Fillable PDF from the New York Courts website for certifying that the demand letter was mailed by first class mail at least 10 days before filing.

Download Document

Bring backup, not just the form

Some clerks mainly want the certification. Bring the copy of the demand letter and your mailing proof anyway. If the court asks, you want it in your hand, not on some old email chain.

How to comply without turning this into a bigger mess

Write a clear demand letter. Say who is owed money, how much, why, and when payment is due. You do not need Shakespeare.
Mail it by first class mail. That is the mailing method the statute talks about.
Keep proof. Save a copy of the letter, the address used, and the mailing receipt. A USPS certificate of mailing is cheap and helpful.
Wait at least 10 days before filing. More on counting below.
File the Demand Letter Certification with your claim. Sign it only if it is true.

If you just need a starting draft, our free tool can help. It helps with the wording. It does not walk the letter to the mailbox for you.

Free Tool

Free Demand Letter Generator

Create a demand letter fast, then print it, mail it by first class mail, and keep proof.

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If you want more pressure behind the letter, attorney letterhead often gets more attention. We explain why in Why Demand Letters Without Law Firm Letterhead Don't Work.

Related Service

Attorney letterhead demand letter

Need help drafting the letter? Before filing in New York, confirm that the mailing method will support the first-class-mail certification the court requires.

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Fancy letterhead does not fix a bad mailing

The statute says first class mail. Email, text, a phone call, or hand delivery do not replace that. Extra mailing services can help with proof, but make sure you can still truthfully certify first class mail on the court form.

The 10-day wait: count it conservatively

Do not cut this close. If you mail the letter and then file right on the edge, you are inviting an argument you do not need.

Wait at least 10 full days after mailing before you file. As a practical move, many people wait 11 or 12 days just to avoid a counting fight.

Keep a tiny paper trail:

A copy of the demand letter
The address used
Proof of mailing
Any returned envelope, if the letter comes back

If the letter comes back, keep it. The court may want to know what address you used and why.

What happens if you do not comply

The court may refuse the filing, adjourn the hearing, or dismiss the claim until the rule is satisfied.

In practical terms, that means more delay. You may need to re-mail the letter, wait again, and come back another day.

That delay matters. Manhattan hearing dates are already slow enough. If you are filing there, see how long Manhattan small claims can take.

This form does not prove the debt

The certification only proves you sent the pre-suit letter. It does not prove the customer owes the money. You still need the contract, invoice, photos, messages, payment history, and witness story needed to win.

If you are the business sending the letter

Use the right defendant name. Do not sue a nickname if you have the real legal name.
Use the best address you have. Sloppy addressing creates avoidable problems.
State the amount clearly. Vague demands weaken your position.
Give a reasonable deadline. 10 to 14 days is standard.
Keep the tone professional. This letter may end up in front of a judge.

If you are the consumer who received the letter

Getting a demand letter from a business can be stressful. Here is what to know:

The letter itself is not a lawsuit. It is a required step before the business can file.
You have at least 10 days to respond. Use that time to review the claim and gather your records.
If the amount is wrong, say so in writing. A clear written response helps if this goes to court.
If you owe the money and can pay, settling now avoids court entirely.
If the business skipped the mailing requirement, that is a procedural defense. Ask the court about it.