How To Register For PAYE With HMRC: Step-By-Step UK Payroll Registration

UK Payroll Registration Registration and setup with HMRC for PAYE obligations when a business employs workers subject to UK payroll rules. The typical registration sequence includes gathering business details, submitting the employer registration to HMRC, receiving your accounts office reference, and configuring payroll systems for ongoing RTI reporting and payment.

This article walks through the registration steps employers commonly follow, practical timings, and the immediate actions after HMRC confirms your PAYE scheme. Treat the guidance as an operational checklist: register early, ensure software compatibility with Real Time Information (RTI), and confirm how and when you'll pay HMRC.

Step 0: Prepare A Pre-Registration Checklist

Before you begin, collect the core information HMRC asks for. Missing or inconsistent information is the most common source of delays.

• Business Details: Legal company name, trading name (if different), Company House number (if applicable) or unique taxpayer reference.
• Contact Information: Primary contact name, email and telephone, and business address.
• Payroll Details: Expected PAYE start date, expected number of employees, pay frequency (weekly/monthly), and payroll software choice.
• Banking And Payment Plan: Details for paying HMRC electronically and internal payment owner.

Step 1: Register As An Employer With HMRC

Use the GOV.UK online service to register as an employer. If your business is overseas, the same GOV.UK registration page explains how non-UK employers should proceed. When you submit the registration, HMRC will process and issue an accounts office reference and PAYE scheme number by post (or sometimes via the employer online account).

Step 2: Receive And Record Your Employer References

Once HMRC issues the accounts office reference, record it centrally. You will need this reference for payments to HMRC, for payroll submissions, and to link your payroll software to your online HMRC employer services.

Step 3: Set Up Payroll Software And RTI Submissions

Choose payroll software that supports RTI and, where needed, auto-enrolment. Configure the software with your employer reference, pay cycles, and starter information for each employee (e.g., tax code, National Insurance number). Run at least one test payroll to ensure calculations and RTI submissions are formatted correctly.

• RTI Requirement: Every payrun must be reported to HMRC in real time via an FPS (Full Payment Submission).
• Starter Checklist: Collect employee name, date of birth, National Insurance number, address, and starter declaration or previous employment details.

Step 4: First Pay Run And HMRC Notifications

On the first pay date, run payroll and submit an FPS to HMRC on or before the payment. If deductions are due, prepare your payment schedule—employers typically pay PAYE liabilities by the 22nd of the following month for electronic payments (or the 19th for cheques, where allowed). The first FPS must include full details even if no tax is due.

Step 5: Ongoing Reporting And Payments

Keep submitting RTI FPS files each pay period and file Employer Payment Summaries where required. Reconcile payroll reports with your accounting systems monthly and retain all statutory records. Make PAYE payments on time and review employee tax codes monthly for any HMRC changes.

Troubleshooting And HMRC Contact Points

If your registration is delayed or you lose your accounts office reference, contact HMRC’s employer helpline. For software-related submission failures, check your payroll provider’s support resources and HMRC’s online help for RTI errors. Keep copies of all submissions and HMRC correspondence to speed up issue resolution.

Practical Example — Small Retailer

A small US-owned retail business opening a UK branch decides to hire six staff and chooses monthly pay. They register as an employer three weeks before the first payday, receive their accounts office reference, set up cloud payroll with RTI support, and submit their first FPS on payday. They set a recurring calendar reminder to reconcile payroll results and schedule HMRC electronic payments by the 22nd of each month.

Quick Operational Tips

• Register Early: Allow at least two weeks for HMRC to issue references—more if you are an overseas employer.
• Use Certified Software: RTI-compliant software reduces manual reporting and errors.
• Document Processes: Maintain an internal payroll checklist covering starter documentation, pay run approvals, and payment schedules.
• Engage Advisors: For cross-border payrolls or unusual employment types seek payroll specialists or accountants who handle UK PAYE.

In short, the UK Payroll Registration process is a straightforward sequence of preparation, online registration, software setup, and first RTI reporting. Follow the steps above, check HMRC guidance, and document your payroll controls to ensure correct and timely compliance.