Free Tool for Litigation Professionals
CPR Deemed Service Calculator
Get the deemed date of service under CPR 6.14 and CPR 6.26, plus the acknowledgment of service and defence deadlines that run from it. Business days, bank holidays and the 4.30pm rule, all handled for you.
30+ Years' Experience
Trusted by 200+ Law Firms
ABI Members
ISO 27001 & 9001
Free, No Sign Up
Free Deemed Service Calculator
Work out the deemed date of service, and every deadline after it
Choose the document, the method and the date of the service step. The calculator applies CPR 6.14 and CPR 6.26 with the England and Wales bank holiday calendar, then maps the acknowledgment of service and defence deadlines that run from deemed service.
1. Where is service taking place?
2. What are you serving? iThe court normally serves the claim form by first class post unless you tell it you wish to serve it yourself. Where the court serves, the notice of issue states the deemed date. Use this calculator when you are effecting service.
3. How was it served?
4. When was the step completed?
Guidance only, not legal advice. England and Wales, Part 7 claims.
The Basics
What is deemed service under the CPR?
Deemed service is the date on which the Civil Procedure Rules treat a court document as served, whatever day it actually arrived. The deemed date of service for a claim form is fixed by CPR 6.14. For every other document, CPR 6.26 sets the date according to the method of service used.
The deemed date is not a technicality. It starts the clock for the acknowledgment of service under CPR 10.3 and the defence under CPR 15.4, it determines whether service beat a limitation deadline, and it fixes the earliest day a claimant can request default judgment.
The rules set the date conclusively. Evidence that the document actually arrived earlier, or later, does not move it, which is exactly why the counting has to be right first time.
How to calculate the deemed date of service
- Identify the document. Claim forms follow CPR 6.14. Particulars of claim, application notices, witness statements, orders and everything else follow CPR 6.26.
- Fix the date of the service step. The day the document was posted, handed over, left at the address, emailed, faxed or lodged with the DX provider.
- Apply the right rule. CPR 6.14: the second business day after the step. CPR 6.26: the second day for post and DX, rolled to a business day, or the same day before 4.30pm for personal service, delivery, email and fax.
- Run the deadlines. Count 14 days for the acknowledgment of service and 14 or 28 days for the defence from the deemed date of service, excluding the day of service under CPR 2.8.
Serve by first class post and two days disappear before service is even deemed to have happened, which matters when the CPR 7.5 window for serving the claim form is closing. Where time is short, instructing a process server to effect personal service the same day takes the postal gamble out of it.
And where a defendant cannot be reached by any of the normal methods, the answer is an application for alternative service under CPR 6.15, not improvisation.
Or skip the counting entirely: the calculator above applies all of it in one click and hands you a copyable summary and calendar file.
Why It Catches People Out
One envelope, two deemed dates of service
Post a claim form and its particulars together on a Friday and their deemed dates of service land on different days. Most of the time nothing turns on it. Then a limitation point or a default judgment application makes the gap decisive.
Both posted first class on Friday 10 July 2026
Claim Form · CPR 6.14
Tuesday 14 July
Second business day after posting
The weekend does not count. Saturday and Sunday are skipped entirely, so the count runs Monday, Tuesday.
Particulars of Claim · CPR 6.26
Monday 13 July
Second day after posting
The second day after is Sunday, not a business day, so service rolls forward to the Monday.
The calculator flags this divergence automatically whenever you serve a claim form with particulars attached, and shows the strict alternative dates alongside the standard practitioner approach.
The Rules Behind the Results
Deemed service rules: how CPR 6.14 and 6.26 work
Six rules decide every date this deemed service calculator produces. Here is each one in plain terms, with the rule number to check against.
Business Days: CPR 6.2(b)
Any day except Saturday, Sunday, a bank holiday, Good Friday or Christmas Day. The calculator applies the England and Wales list from the official GOV.UK feed, including substitute days around Christmas and New Year.
The 4.30pm Rule
Applies to CPR 6.26 service by personal delivery, leaving at a permitted address, fax and email: before 4.30pm on a business day means deemed served that day, otherwise the next business day. Never claim forms, post or DX.
Counting Clear Days: CPR 2.8
A period of "14 days after service" does not count the day of service itself: deemed service on Monday the 6th makes the fourteenth day Monday the 20th. Five days or less also excludes weekends and bank holidays.
Court Office Closed: CPR 2.8(5)
If a filing deadline, such as an acknowledgment of service or a defence, ends on a day the court office is closed, filing on the next open day is in time. The calculator rolls those dates and flags it when it has.
Email Needs Consent: PD 6A
Email or fax is only good service where the recipient or their solicitor has agreed in writing, and given the address or number to use. Check before sending, not after.
Four Months to Serve: CPR 7.5
The claim form step must be completed before midnight on the calendar date four months after issue, six months out of the jurisdiction. The date is fixed, never moving for weekends. Extensions need an order under CPR 7.6.
The CPR 6.26 deemed service table
Deemed dates of service for documents other than the claim form, method by method, as the rule sets them out. Rules last verified against justice.gov.uk in July 2026.
| Method of Service | Deemed Date of Service (CPR 6.26) |
|---|---|
| First class post | The second day after posting, provided that day is a business day; otherwise the next business day. Applies equally to any service providing next business day delivery. |
| Document exchange (DX) | The second day after the document was left with or collected by the DX provider, provided that day is a business day; otherwise the next business day. |
| Delivering to or leaving at a permitted address | If done on a business day before 4.30pm, that day. In any other case, the next business day. |
| Fax | If transmission completes on a business day before 4.30pm, that day. In any other case, the next business day after the day of transmission. |
| Email or other electronic method | If sent on a business day before 4.30pm, that day. In any other case, the next business day after the day it was sent. |
| Personal service | If served personally before 4.30pm on a business day, that day. In any other case, the next business day. |
Cutting it fine?
Post burns days you may not have, and deemed service burns more. Same day process serving, effected personally anywhere in the UK, with a statement of service that stands up in court.
Common Questions
Deemed service: frequently asked questions
The deemed date of service questions fee earners ask us most often.
CPR 6.2(b) defines a business day as any day except Saturday, Sunday, a bank holiday, Good Friday or Christmas Day. For service in England and Wales the relevant bank holidays are those for England and Wales, which is the list this calculator applies using the official GOV.UK feed, including substitute days around Christmas and New Year.
Under CPR 10.3 it is due 14 days after service of the claim form where the particulars of claim accompany it, or 14 days after service of the particulars where they follow separately. The day of service is not counted, per CPR 2.8, and if the deadline falls on a day the court office is closed it moves to the next open day under CPR 2.8(5).
Only if Practice Direction 6A is satisfied. The party to be served, or their solicitor, must previously have indicated in writing that they are willing to accept service by email and given the address to be used. An email address on a solicitor's writing paper counts only where it states the address may be used for service. Without that indication, email is not good service.
For acts done at court, such as filing an acknowledgment of service or a defence, CPR 2.8(5) provides that the act is in time if done on the next day the court office is open. The last day for completing the service step for a claim form under CPR 7.5 is different: it is a fixed calendar date and does not move for weekends or holidays.
Under CPR 7.5(1) the claimant must complete the relevant step before midnight on the calendar date four months after the date of issue, or six months where the claim form is to be served out of the jurisdiction. Deemed service may fall after that date. What matters is completing the step in time, and extensions require an order under CPR 7.6.
Primary sources: CPR Part 6 and Practice Direction 6A at justice.gov.uk.
Get in touch
Need documents served in time?
Our nationwide network of agents supports law firms, insurers and insolvency practitioners every day. Send over your instruction, or call us for a same day quote.