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Simplifying How to Manage Payroll for a Small Business

September 13, 2025 by
Lewis Calvert

 Running a small business involves many responsibilities, and payroll management is one of the most important. Payroll management involves all tasks required to pay employees correctly and on time while meeting UK legal requirements. This includes calculating taxes and submitting reports to HMRC.

As a small business owner, you can manage payroll yourself, especially with the help of modern software or by using professional payroll services for small business.

Proper handling ensures compliance with tax laws and maintains accurate financial records.

What Is Payroll and Why Is It Important?

Payroll is the process of calculating and distributing salaries and wages to employees. It starts with gross pay and involves making specific deductions to arrive at take-home pay. Accurate payroll is a legal requirement; mistakes can lead to HMRC penalties and unhappy employees.

Essential Requirements Before You Start Payroll

Before paying employees, meet legal obligations and gather necessary information for accurate processing.

Legal Obligations for UK Employers

UK employers must:

  • Pay National Minimum Wage or Living Wage based on employee age
  • Auto-enroll eligible employees (aged 22 to State Pension age, earning £10,000+) into pension schemes
  • Maintain employers' liability insurance (£5 million minimum)

Choosing Between In-House vs Outsourced Payroll

In-House: Full control, cost-effective, requires time and knowledge.

Outsourced: Professional expertise, time-saving, monthly fees, less control.

Step-by-Step Guide to Managing Payroll for Small Businesses

Following these steps ensures you handle all payroll information correctly and stay compliant with HMRC requirements.

Register Your Business as an Employer with HMRC

Register with HMRC before your first payday (within 2 months of hiring). Registration is required if paying employees £96+ weekly or providing benefits. HMRC provides your PAYE reference number and Accounts Office reference number within five working days.

Select and Set Up Payroll Software

Choose HMRC-recognized software that can:

  • Calculate pay and deductions automatically
  • Generate and distribute payslips
  • Submit Real Time Information (RTI) reports like FPS to HMRC
  • Maintain accurate employee records

Many providers offer free software for businesses with fewer than 10 employees.

Collect Employee Details

Gather necessary information for accurate payroll calculations. Store personal data securely following data protection rules and maintain transparency about data usage. Keep employee records for at least 3 years from the end of the tax year.

Calculate Pay, Deductions, and Contributions

Each pay period, calculate:

  • Gross pay (total earnings before deductions)
  • Income Tax and employee National Insurance contributions
  • Pension contributions, student loan repayments, and other deductions
  • Employer's National Insurance contributions
  • Net pay (final amount paid to employee)

Process Payments and Distribute Payslips

Transfer net pay to employees' bank accounts on or before payday. Provide detailed payslips showing gross pay, deductions breakdown, and final net pay. Modern systems offer online portals for instant pay slip access.

Submit Reports and Pay Taxes to HMRC

Send Full Payment Submission (FPS) to HMRC on or before each payday. Use Employer Payment Summary (EPS) for claiming reductions or when no employees are paid in a tax month. Pay owed tax and National Insurance to HMRC by the 22nd of the following month.

Keep Accurate Payroll Records

Keep payroll records for 3 years minimum. As the tax year ends on April 5th, complete year-end tasks: send final FPS/EPS, provide P60 forms to current employees, and report expenses/benefits.

Managing payroll may seem daunting, but following structured steps ensures compliance with UK regulations. From understanding essential terms to selecting software and avoiding common pitfalls, each aspect plays a crucial role.

Frequently Asked Questions

How do I register my small business for PAYE with HMRC?

Register online before your first payday. HMRC will provide your PAYE reference number within five working days.

Can I manage payroll myself, or do I need an accountant?

Many business owners manage payroll using HMRC-recognized software. However, outsourcing ensures professional expertise if you lack time or confidence.

What are the most common payroll mistakes small businesses make?

Common mistakes include incorrect National Insurance calculations, missing deadlines, and failing to record pension deductions correctly. These can lead to HMRC penalties.

How often should I process payroll for my staff?

Weekly or monthly, ensuring consistent minimum wage compliance. Your chosen frequency determines reporting and contribution schedules.