N9 Acknowledgment of Service. What it is and how to fill it in.

You've just received a court claim form. The envelope probably arrived without warning. Inside it, along with the N1 Claim Form that sets out what the claimant wants from you, is a small pack of documents. One of them is the N9, the Acknowledgment of Service form.

The N9 is not a defence. It is not an admission. It is a tactical form that tells the court and the claimant: "I've received this claim. I'm taking it seriously. I need a bit more time." Filing it buys you 14 extra days to prepare your response, on top of the 14 days you already have. Without it, you run the clock down to 14 days total. With it, you get 28.

This page explains exactly what the N9 is, what the three boxes mean when you're filling it in, and what happens after you send it back.

The short version

The N9 Acknowledgment of Service is a form you send to the court within 14 days of receiving a claim. It is not a final answer. It is a holding action. You tick one of three boxes:

1. I admit the claim (Admit)
2. I intend to defend (Defend)
3. I dispute the court's jurisdiction (Dispute Jurisdiction)

If you tick "I intend to defend", the clock resets. You get another 14 days to file a full Defence. Total: 28 days from service. If you tick "I admit" or "I dispute jurisdiction", different rules apply.

If you do not file the N9 or a Defence within 14 days, the claimant can ask the court for a Default Judgment and you lose without a hearing.

At a glance

What the N9 actually is

The N9 Acknowledgment of Service is a form that tells the court you have received the claim and what you intend to do about it. It is evidence. If you sign it and send it back, the court has proof you received the claim on a certain date. That date becomes your "service date" for calculating deadlines.

The form itself is simple. One side of A4. It asks for:

• Your name and case reference (the number on the N1)
• Your address
• Whether you are acting as a litigant in person (representing yourself) or if you have a solicitor
• Three boxes: "I admit the claim", "I intend to defend", or "I dispute the jurisdiction"

You tick one box. You sign it. You send it back to the court.

That's it. The N9 is not where you explain your case. It is not where you argue the facts. It is a declaration. "I got this. I'm responding."

Why the N9 exists (Civil Procedure Rules, Part 10)

The Civil Procedure Rules Part 10 sets out what the defendant must do when served with a claim. The N9 exists to protect you.

Without it, the court would run on a simple rule: 14 days to respond or lose. Many defendants miss that deadline because they are busy, because they do not understand what they are supposed to do, or because they are waiting for advice from a solicitor. The N9 acts as a buffer. By filing it within 14 days, you tell the court: "I am taking this seriously, but I need to buy time for a proper response."

The claimant does not like the N9 much because it delays their judgment. But it is part of the system to ensure defendants get a fair hearing. The court does not want to hand out judgments to people who never saw the claim.

The N9, the N9A, and the N9B: what is the difference

The N9 comes as part of a three-form pack. Understanding the difference between them stops a lot of confusion.

The N9 itself (Acknowledgment of Service) is what we are talking about. It buys you time.

The N9A is the Admission form. You use this if you want to admit the claim fully or in part, or if you want to admit liability but dispute the amount. Filing the N9A speeds up the process because there is no argument about fault. The court can go straight to calculating how much you owe.

The N9B is the Defence and Counterclaim form. You use this if you want to defend the claim. It is where you set out your version of the facts and why you think the claimant is wrong. The N9B is the detailed response. It is longer, more formal, and requires more thought.

The three forms are alternatives. You use one or the other. If you send back the N9 with "I intend to defend" ticked, you follow it up with the N9B (Defence) before day 28. You do not send the N9A (Admission) and the N9B (Defence) in the same envelope.

The three boxes: Admit

If you tick "I admit the claim", you are saying: "Yes, the claimant is right. I owe the money."

Once you tick this box, the game changes. You are no longer disputing whether you owe anything. The court assumes you do. What happens next depends on what the claim is.

If it is a simple debt claim (money borrowed, goods unpaid, invoice unpaid), admitting the claim means the claimant can ask for Judgment for Admission and the court will order you to pay. The court might ask you to fill out a financial information form (an N9A(2)) so it can set repayment terms you can actually afford.

If it is a more complex claim (personal injury, contractual dispute), admitting liability but disputing the amount is a different route. You might file an N9A admitting the principle but saying "the amount is too high" and offer a different figure.

Admitting stops the clock on some things. You no longer need to file a full Defence. But new deadlines open up around payment or negotiating the damages.

The three boxes: Defend

If you tick "I intend to defend", you are saying: "I disagree. I want a proper hearing."

This is the most common box for defendants who have a real dispute with the claimant.

Once you tick it, the court gives you until day 28 (from service) to file a full Defence form (the N9B). You have breathing room. You can take time to find evidence, take advice, think carefully about what you want to say.

The Defence form is longer and more detailed than the Acknowledgment. It sets out your version of the facts, point by point, explaining why the claimant's claim fails. It is where you argue your case on paper. The court reads it before deciding whether there needs to be a trial.

If you do not file the Defence by day 28, the claimant can apply for Default Judgment again, and you lose.

Ticking "I intend to defend" does not guarantee you win. It just guarantees you get a fair hearing. The court will read both sides and decide.

The three boxes: Dispute Jurisdiction

If you tick "I dispute the jurisdiction", you are saying: "This court has no power over me."

This is the rarest tick. It applies in specific situations:

You live outside England and Wales and do not do business here. The claimant's claim is based on something that happened overseas. You argue the English courts have no power to hear the case.

You are a foreign government or organisation with immunity from being sued in English courts.

You have a contract that says any disputes must be heard in a different country's courts.

If you tick this box, the court will often order a hearing to decide whether it actually has jurisdiction over you before the main case proceeds. This can be faster or slower than defending on the merits, depending on the circumstances.

For most defendants in the UK, this box never applies. But it is there for those it does.

The 14-day deadline

You have 14 days from the date the claim was served on you to file either the N9 (Acknowledgment) or a Defence (N9B).

The service date is usually either:

• The date the court sent you the claim form by post (usually the date on the sealed copy of the N1)
• The date you were handed the claim form in person
• The date the claim form was left at your address

If the claim was served by post, the court typically adds 2 extra days. So if the N1 is dated 15 May, you are treated as having been served on 17 May, and your 14-day deadline is 31 May.

This is not a guideline. It is a hard deadline. One day late and you risk Default Judgment.

If you cannot make it by day 14, you can apply to the court for an extension of time, but the court will want a good reason. "I was busy" is not a good reason. "I was seriously ill" or "my solicitor became unavailable" might be.

What happens when you tick "Defend"

If you tick "I intend to defend" on the N9, here is the timeline:

Day 0 to Day 14: You file the N9 (Acknowledgment of Service).

Day 14 to Day 28: You have 14 extra days to file the Defence form (N9B).

Day 28: Your Defence must be in the court's hands. One day late is too late.

The Defence explains your version of the events and why you think the claimant's claim should fail. It has to address every point in the Particulars of Claim (the detailed claim that came with the N1).

After you file the Defence, the case usually moves into the "track" system. Small claims, fast track, or multi-track, depending on how much money is at stake. Different tracks have different procedures and timescales.

If you do not file a Defence by day 28, the claimant can apply for Default Judgment.

What happens when you tick "Admit"

If you tick "I admit the claim", the timetable is different.

If you are admitting the full claim and the claimant is not arguing about the amount, the case might end there. The claimant can ask for judgment and the court orders you to pay.

If you are admitting liability but disputing the amount the claimant claims you owe, you might file an N9A(2) form to set out what you think you actually owe. The court can set a date for a hearing to decide the final amount.

Some claims allow the defendant to admit and request time to pay. You might say: "Yes, I owe it, but I need 12 months to pay because I've lost my job."

The timeline after admission is shorter and more straightforward than after defence, because the main argument (liability) is gone. The only question left is usually how much and when you pay.

Filing the N9: online or by post

You have two ways to send the N9 back to the court.

By post: Address the form to the court that issued the claim. The address is on the N1 Claim Form. Put it in an envelope, stamp it, post it. The court receives it by post and records the date received.

Online: If the claim was issued via MCOL (the Money Claim Online system), you can file the N9 online through the same system. This is faster and leaves a clear electronic record. MCOL is the standard system for straightforward debt claims in the County Court.

You do not need to do both. Posting it is fine. Filing it online is faster.

You should keep a copy for your records. If you send it by post, you might want to send it by recorded delivery so you have proof of the date the court received it.

Common mistakes when filling the N9

Ticking more than one box. You can only tick one. If you tick two, the court will reject the form and ask you to send another copy.

Writing an explanation in the margin. The N9 is not the place to explain why you dispute the claim. That comes later, in the Defence if you tick "Defend". If you write a long explanation on the N9 itself, you are wasting space and time. Save it for the Defence.

Forgetting to sign it. The form has a signature box. An unsigned N9 is invalid. The court will not accept it.

Missing the deadline. This is the biggest one. Day 14 is a hard deadline. If it falls on a weekend or bank holiday, the deadline moves to the next working day. But you cannot assume extensions. File early.

Sending the N9 but no Defence. If you file the N9 ticking "I intend to defend", you must follow it up with the Defence by day 28. If you do not, the claimant can still get Default Judgment. The N9 is not a substitute for the Defence. It is a holding action.

Not telling the court if your address has changed. If you move house between receiving the claim and filing the N9, you must update the address on the form. The court needs to know where to send future documents.

Common misconceptions

"Filing the N9 means I've admitted defeat." No. Filing the N9 ticking "I intend to defend" is the opposite. It is a declaration that you will fight.

"The N9 is where I explain my case." No. It is a one-page form with three boxes. The explanation comes in the Defence, if you tick "Defend".

"If I file the N9, I lose the right to argue the case was served wrong." Not necessarily. You can still challenge service later if you genuinely did not receive the claim. But filing the N9 is an acknowledgment that you received it, so the challenge becomes much harder.

"The N9 is optional." Not really. If you want to defend the claim without the claimant getting a Default Judgment on day 14, you must either file the N9 or file a Defence. At least one of the two.

"The court will give me extra time if I ask nicely." The court has power to extend time, but only if you show cause. Being busy is not a cause. Being in hospital is. Needing to find a solicitor might be, depending on the circumstances.

Related concepts

If you found this page useful, these terms come up often in the same conversations:

• N1 Claim Form. The form that starts the case. It contains the claimant's version of the facts and what they want from you.
• N9A Admission form. Used to admit the claim or part of it.
• N9B Defence and Counterclaim form. Used to defend the claim. A longer, more detailed form than the N9.
• Default Judgment. A judgment awarded by the court in favour of the claimant, without a trial, because the defendant failed to respond in time.
• Particulars of Claim. The detailed version of the claimant's case. Usually attached to the N1.
• Defence. Your formal response setting out your version of the facts and why the claim should fail.
• Service. The process of delivering the claim form to the defendant.
• Money Claim Online (MCOL). The online system for issuing and managing straightforward money claims in the County Court.
• Litigant in person. Someone representing themselves in court without a solicitor or barrister.
• Counterclaim. A claim you make against the claimant, set out in your Defence.

Sources

The information on this page is based on:

• Civil Procedure Rules, Part 10. The rules governing defendant responses. https://www.justice.gov.uk/courts/procedure-rules/civil/rules/part10
• Money Claim Online system documentation. The online system for issuing claims. https://www.moneyclaim.gov.uk/
• HM Courts and Tribunals Service. Official UK court administration. https://www.gov.uk/government/organisations/hm-courts-and-tribunals-service
• UK Parliament Legislation. Civil Procedure Rules and related acts. https://www.legislation.gov.uk/

This page was reviewed for accuracy on 2026-05-27. UK court procedures and deadlines can change. Check the courts service website or speak to a solicitor for the most current information.

A note on what this page is and isn't

This is information about UK court procedure, not legal advice about your case. The N9, the deadlines, the three boxes: these are facts about how the system works. Whether you should tick "Admit", "Defend", or "Dispute Jurisdiction" depends entirely on your situation, and that is where you need proper legal advice.

If you have a legal case and you are not sure what to do, a solicitor can give you advice tailored to your facts. CaseCalm helps litigants in person understand the court system and draft their own documents. We are not a law firm and we are not authorised by the Solicitors Regulation Authority. When your situation needs real legal advice, we point you to qualified professionals.

Written by Peter Kolomiets. Reviewed for accuracy 2026-05-27. Comments or corrections to peter@casecalm.com.