The UK went through many upheavals after Brexit, but it’s fair to say that it remains a favourite destination for many business owners. The United Kingdom, which has a population of over 65 million, accepts and celebrates the many immigrants’ cultures, which is why international companies are eager to start a business here.

But before they do so, they need to understand the UK payroll obligations, employment laws, and tax obligations. In this blog, we are listing the steps a business would need to take during payroll processing. But first, let’s look at the UK’s payroll requirements.

Payroll processing in the UK involves collecting employee data, calculating pay and deductions, submitting Real Time Information (RTI) to HMRC, and paying employees and taxes on time.

Key Takeaways

• Payroll processing in the UK involves 6 key steps: data collection, record management, pay schedule, time tracking, calculation, and HMRC payments.
• Employers must submit payroll data to HMRC using RTI on or before each payday.
• PAYE liabilities must be paid by the 22nd of the following month (electronic payments).
• Payroll includes Income Tax, National Insurance, pension contributions, and statutory payments.
• Employers must keep payroll records for at least 3 years to comply with HMRC regulations.
• Late submissions or incorrect payroll can result in penalties and interest charges.

An Insight Into Payroll in The UK

The UK payroll system is governed by HMRC and requires employers to calculate and report employee earnings, deductions, and taxes accurately.

All employers must operate PAYE and submit payroll data using Real Time Information (RTI) on or before each payday.

Employers are responsible for:

• Calculating Income Tax and National Insurance
• Managing workplace pension contributions
• Reporting to HMRC
• Maintaining payroll records

Failure to comply can result in penalties, interest charges, and compliance investigations.

As of 2026, payroll compliance is increasingly digital-first, with stricter enforcement of RTI accuracy and submission timelines.

PAYE and UK

PAYE (Pay As You Earn) is the system used to deduct Income Tax and National Insurance directly from employee wages.

Employers must:

• Register with HMRC
• Assign correct tax codes
• Submit Full Payment Submissions (FPS)
• Pay HMRC liabilities

Key 2026 PAYE Deadlines:

• RTI submission: On or before payday
• PAYE payment: 22nd of next month (electronic)
• 19th if paying by post

Missing deadlines leads to automatic penalties and interest charges.

PAYE also includes:

• Statutory Sick Pay (SSP)
• Statutory Maternity Pay (SMP)
• Statutory Paternity Pay (SPP)
• Statutory Adoption Pay (SAP)
• Student loan and postgraduate loan deductions

A 6-Step Payroll Processing Guide

1. Collect Employee Tax Information

Employers must collect employee details before payroll begins.

This includes:

• P45 or starter checklist
• National Insurance number
• Tax code

Employers must also complete right-to-work checks (legal requirement in the UK).

2. Create a Record Management Process

Accurate records are essential for compliance.

Employers must maintain:

• Employee details
• Payroll reports
• Pension records

HMRC Requirement: Records must be kept for at least 3 years.

Poor record-keeping is one of the most common causes of HMRC penalties.

3. Set a Pay Schedule

Employers must define how often employees are paid:

• Weekly
• Fortnightly
• Monthly

The pay schedule must align with RTI submissions to avoid late reporting penalties.

4. Start Tracking Time And Attendance

Tracking employee working hours ensures accurate payroll calculations.

Employers should monitor:

• Hours worked
• Overtime
• Absences

This is critical for National Minimum Wage compliance and HMRC audits.

5. Calculate Deductions And Pay The Employees

Payroll calculations must include:

• Income Tax
• National Insurance
• Pension contributions

Employers must also apply auto-enrolment pension rules where employees meet eligibility criteria.

Employees must receive itemised payslips on or before payday (legal requirement).

6. Pay Payroll Taxes

After payroll is processed, employers must pay HMRC.

This includes:

• PAYE
• National Insurance
• Student loans
• Apprenticeship Levy (if applicable)

Late payments result in penalties and daily interest charges.

Common Payroll Mistakes

Businesses often make payroll errors such as:

• Submitting RTI late
• Using incorrect tax codes
• Failing to enrol eligible employees in pensions
• Incorrect National Insurance calculations
• Missing HMRC payment deadlines

Avoiding these mistakes significantly reduces compliance risk.

Payroll Processing Checklist

Quick checklist to process payroll correctly:

1. Collect employee details (P45 / starter checklist)
2. Verify tax codes and NI numbers
3. Track working hours and attendance
4. Calculate gross pay and deductions
5. Submit RTI (FPS) to HMRC
6. Pay employees
7. Pay HMRC liabilities by deadline

To Sum It Up

Payroll processing in the UK involves multiple compliance steps, from employee data collection to HMRC reporting and tax payments.

Businesses must ensure accuracy, timely submissions, and full compliance with HMRC regulations to avoid penalties.

Outsourcing payroll can help reduce risk, improve accuracy, and ensure compliance with constantly evolving UK payroll laws.

Frequently Asked Questions

What are the steps in payroll processing in the UK?

Payroll processing includes collecting employee data, calculating pay, submitting RTI to HMRC, paying employees, and paying taxes.

What is RTI in payroll?

RTI (Real Time Information) is the system used to report payroll data to HMRC every time employees are paid.

What is the deadline for PAYE payments?

PAYE must be paid by the 22nd of the following month if paying electronically.

What happens if payroll is incorrect?

Incorrect payroll can lead to penalties, employee disputes, and HMRC investigations.

Is payroll outsourcing worth it in the UK?

Yes, many UK businesses outsource payroll to ensure compliance and reduce administrative burden.