What Is a PAYE Reference Number and Where Can You Find It?

If you employ staff through a UK business, you will likely need a PAYE reference number to manage payroll, report employees' pay to HM Revenue & Customs (HMRC) and handle employment tax obligations. Your employer PAYE reference number is the identifier HMRC assigns to your employer record when you register for Pay As You Earn (PAYE). You can usually find it in the letter HMRC sends after you register as an employer, in certain HMRC payroll correspondence, or in your PAYE Online account.

It is important not to confuse this number with your company's Unique Taxpayer Reference (UTR), Companies House registration number or Accounts Office reference. Each serves a different purpose. This guide explains what a PAYE reference looks like, where to find it, how to obtain one if you have not received it, and what it means for UK company directors, startups and overseas founders.

What Is a PAYE Reference Number?

A PAYE reference number is an employer identification reference issued by HMRC when you register to operate a PAYE scheme. PAYE stands for Pay As You Earn. It is the system employers use to deduct Income Tax and National Insurance contributions from employees' pay where required and report payroll information to HMRC. Your employer PAYE reference helps HMRC identify the employer record associated with those payroll reports. The reference usually has two parts:

• A three-digit tax office number.
• A slash followed by a series of letters and numbers identifying the employer.

For example, a reference might look like 123/AB45678. This is an illustrative format, not a real employer's reference. The length and characters after the slash can vary. HMRC correspondence may call it the employer PAYE reference, PAYE reference or employer reference. It is different from the Accounts Office reference, which is used mainly when paying PAYE liabilities to HMRC.

What Is a PAYE Reference Number Used For?

Your employer PAYE reference is part of the information used to identify your employer's payroll record. You may need it when:

• Setting up or managing payroll software.
• Reporting employees' pay and deductions to HMRC.
• Providing employer details to an accountant or payroll bureau.
• Completing certain forms that ask for your employer PAYE reference.
• Managing workplace pension administration or other services that request employer payroll identifiers.

When you submit payroll information, your employer details are included in the Full Payment Submission (FPS) and, where relevant, the Employer Payment Summary (EPS). HMRC's payroll reporting guidance distinguishes the employer PAYE reference from the Accounts Office reference and a company's Corporation Tax UTR.

For example, a small digital agency that hires its first employee must register as an employer if the PAYE rules require it. HMRC then issues the reference used to identify the agency's employer record. The reference stays relevant as the business manages its payroll, so it is worth storing it with your company's other tax and payroll records.

Where Can You Find Your PAYE Reference Number?

If your business is already registered as an employer, you may not need to contact HMRC to obtain the reference. Start with these places.

1. Your HMRC employer registration letter

The first place to look is the letter HMRC sent when you registered as an employer. This letter confirms your employer PAYE reference and normally provides the information you need to set up or manage PAYE Online.

If an accountant or payroll agent registered on your behalf, HMRC correspondence may have been sent to them. Ask whether they received the letter and whether they can provide the reference. HMRC's payroll guidance identifies the employer registration letter as a source for the reference. Check both physical and digital records. You may have scanned the letter when setting up payroll or saved it in a folder containing your company incorporation documents.

2. Your HMRC PAYE Online account

If you have enrolled for PAYE Online, sign in to your HMRC business tax account and check the employer PAYE service and related correspondence. HMRC's online service allows employers to check what they owe, review payment history, access tax code notices and manage other payroll-related information.

Start here: You may need to complete the relevant enrolment and activation steps before you can use the service. If you registered online as an employer, HMRC says you are automatically enrolled for PAYE Online, but you still need to activate the service using the code sent by post. If you cannot access the account, resolve the login or activation issue separately. The inability to sign in does not necessarily mean your PAYE reference has not been issued.

3. HMRC payroll correspondence

Look through letters and notices relating to your employer's PAYE scheme. HMRC identifies the first part of the employer PAYE reference as the three-digit tax office number and the remaining part as the employer reference after the slash. The three-digit office number can also appear on tax code notices such as P6 or P9.

If you find a reference on a letter, check the document heading and employer details to make sure it belongs to the correct business and PAYE scheme. Do not assume every number in an HMRC letter is the PAYE reference. Employers may receive correspondence containing other identifiers, including the Accounts Office reference and Corporation Tax UTR.

4. Your accountant or payroll provider

If an accountant or payroll bureau manages your payroll, it may already hold the reference. Ask for the employer PAYE reference and, if needed, the separate Accounts Office reference. Request that the two numbers be clearly labelled so they are not accidentally interchanged. This is particularly useful if you have recently changed accountants, taken over a company or outsourced payroll after running it yourself.

5. Your payroll software or employer records

Some payroll systems store your employer PAYE reference in the employer settings or company information section. The exact location depends on the software.

Check the employer details used to prepare Full Payment Submissions and Employer Payment Summaries. You may also find the reference in payroll setup documents or a handover pack from your previous payroll administrator. If the number is shown in software, verify it against HMRC correspondence where possible, especially before filing returns or changing payroll arrangements.

PAYE Reference vs Accounts Office Reference vs Company UTR

These three identifiers are easy to confuse, especially when setting up a new company. However, they are not interchangeable.

The most important distinction is between the PAYE reference and the Accounts Office reference. The PAYE reference is used to identify the employer record in payroll reporting. The Accounts Office reference is generally used to make PAYE payments to HMRC. HMRC warns that using the wrong payment reference can delay a payment or cause it to be allocated to a different tax bill. For a new limited company, the company UTR is another separate number used for Corporation Tax. Having a UTR does not mean the company has registered for PAYE.

How Do You Get a PAYE Reference Number?

If your business needs to operate PAYE but has not registered as an employer, you must register with HMRC. Use the official service: HMRC says you normally need to register when you start employing staff or when you use subcontractors for construction work. You must also register if you are employing yourself, for example as the only director of a limited company, where the PAYE rules require it. You should register before the first payday to obtain your employer PAYE reference. You cannot register more than two months before you start paying people.

The registration process depends on your circumstances. GOV.UK provides an online route for most limited companies with one to nine directors. Once HMRC has processed the registration, it sends the employer PAYE reference in a letter.

What if the first payday arrives before the reference?

HMRC's guidance explains that if you need to pay an employee before receiving the employer PAYE reference, you should run payroll, store the Full Payment Submission and send a late FPS to HMRC. Follow HMRC's current instructions and avoid delaying an employee's pay simply because the reference letter has not arrived. If you are unsure how to handle the reporting steps, speak to a payroll professional.

What If You Cannot Find Your PAYE Reference?

If the reference is missing, work through the following checklist:

1. Check the registration letter. Search physical files, email attachments and company document folders.
2. Contact your accountant or payroll provider. They may have registered the business or retained HMRC correspondence.
3. Sign in to PAYE Online. Check the employer service and any available payroll records.
4. Review relevant HMRC notices. Look for employer details on tax code notices and other payroll correspondence.
5. Contact HMRC if necessary. If the reference remains unavailable, use the official HMRC employer contact service for guidance.

Before contacting HMRC, have the company's legal name, Companies House registration number, employer details and any correspondence about the PAYE scheme available. This can help the adviser understand which employer record you are asking about. If your company has recently changed accountants or directors, explain that clearly. The issue may be a missing record rather than a missing PAYE registration.

Do All UK Limited Companies Need a PAYE Reference?

No. Incorporating a limited company does not automatically mean it needs to operate a PAYE scheme. A company generally needs to register as an employer when it meets the relevant PAYE requirements. These may apply when it pays employees, pays a director through payroll or has other circumstances requiring employer reporting. HMRC's guidance explains that a company only needs a PAYE scheme where the relevant conditions are met.

For example, a founder may incorporate a company but initially have no employees and take no salary. The company may not need a PAYE scheme at that stage. If the founder later begins taking a salary through payroll, the company should review whether it needs to register before the first payday. The decision should be based on the company's actual payment arrangements and HMRC rules, not simply on whether it has a company registration number or Corporation Tax UTR.

What Should Overseas Founders Know?

Non-UK residents can own and manage UK companies, but the company must still meet applicable UK employer and tax obligations. If you are based overseas and employ someone through a UK company, make sure the business has a reliable way to receive HMRC correspondence. Registration letters and activation codes may be sent by post, so a registered office or mail-handling arrangement can matter in practice.

If an accountant or payroll bureau handles the registration, ask them to confirm when the PAYE scheme is established and provide the employer PAYE reference and Accounts Office reference separately. A UK company formation and management platform such as IncorpUK may help global founders organise company administration and registered office arrangements. However, the specific services available depend on the provider's terms, and directors remain responsible for ensuring payroll and tax obligations are met.

Frequently Asked Questions

1. How many digits does a PAYE reference number have?

An employer PAYE reference usually consists of a three-digit tax office number, a slash and a further series of letters and numbers. For example, 123/AB45678 is an illustrative format. The Accounts Office reference is a separate identifier and is usually 13 characters long. 2. Is my PAYE reference the same as my company UTR?

No. The PAYE reference identifies the employer's PAYE record, while the company UTR identifies its Corporation Tax record. They serve different purposes and should not be used interchangeably.

3. Can I find my PAYE reference online?

If you are enrolled for PAYE Online, sign in to your HMRC business tax account and check the employer service and available correspondence. You can also ask your accountant or payroll provider if they manage the scheme.

4. Is the PAYE reference the same as the Accounts Office reference?

No. The employer PAYE reference identifies the employer record for payroll purposes. The Accounts Office reference is generally used when paying PAYE liabilities to HMRC. Using the wrong payment reference can delay payment allocation.

5. How do I get a PAYE reference for a new limited company?

Register as an employer through the official GOV.UK employer registration service. HMRC sends the reference in a letter after registration. You should register before the first payday and cannot register more than two months before you start paying people.

6. Can a company have a UTR but no PAYE reference?

Yes. A company may have a Corporation Tax UTR without needing to operate a PAYE scheme. A PAYE reference is relevant when the company registers as an employer under the applicable rules.

7. What should I do if I have not received my PAYE reference before payday?

Follow HMRC's guidance. It says to run payroll, store the Full Payment Submission and send a late FPS if you must pay an employee before receiving the reference. Check the current employer registration guidance for the correct steps.

8. Does a sole trader need a PAYE reference?

A sole trader does not automatically need a PAYE reference simply because they are self-employed. They may need to register as an employer if they employ staff or otherwise meet the PAYE registration requirements. Their personal or business tax references are separate from an employer PAYE reference.

Conclusion

Your PAYE reference number is the employer identifier HMRC issues when you register to operate PAYE. You can usually find it in your employer registration letter, HMRC payroll correspondence, PAYE Online or your accountant's records.

If you have not registered yet, use the official GOV.UK employer registration service and complete the process before your first payday. If the reference is missing, check your existing records and contact HMRC if necessary.

Most importantly, keep your employer PAYE reference, Accounts Office reference, company UTR and Companies House registration number clearly labelled. For UK startups and overseas founders alike, accurate records make payroll administration easier and help prevent avoidable reporting and payment errors.