Payroll outsourcing: how it works, costs and benefits

Published Wednesday 22 April 2026

Table of contents

• What is payroll outsourcing?
• How does payroll outsourcing work?
• Why outsource payroll?
• Is payroll outsourcing right for your small business?
• How much does payroll outsourcing cost?
• What do payroll providers do?
• Types of payroll service
• FAQs on payroll outsourcing

Key takeaways

• Recognize that payroll outsourcing suits your small business best when you have five or more employees, spend four or more hours monthly on payroll, or handle complex situations like pensions and statutory pay—otherwise, free tools like HMRC's Basic PAYE Tools may be enough.
• Prioritize staying informed about your legal obligations even after outsourcing, because you remain responsible for PAYE compliance regardless of which provider manages your payroll.
• Compare quotes from multiple providers before committing, as costs typically range from £2 to £15 per employee per month and pricing structures vary widely between per-employee, per-payslip, and setup fee models.
• Choose between full-service and DIY payroll based on how much time you want to spend on admin tasks—full-service handles everything but costs more, while DIY keeps you involved in basic tasks like time tracking at a lower price.

What is payroll outsourcing?

Payroll outsourcing is when you hire a third-party provider to handle some or all of your payroll tasks. These specialists manage the complex, time-consuming work so you can focus on running your business. This strategy is growing rapidly. Half of respondent firms in a recent ICAEW survey have already outsourced at least one service line.

Payroll providers typically manage:

• Pay calculations: Working out salaries, overtime, and deductions
• Tax compliance: Filing returns and making payments to HMRC
• Employee payments: Transferring wages directly to bank accounts
• Record keeping: Maintaining accurate payroll documentation

How does payroll outsourcing work?

Payroll outsourcing works when you transfer your payroll tasks to a specialist provider who manages the process on your behalf. Here's how the typical workflow runs:

1. You provide employee data: Share timesheets, hours worked, and any changes like new starters or leavers
2. Provider calculates pay: They work out wages, taxes, National Insurance, and deductions
3. Provider processes payments: Employees receive wages directly in their bank accounts
4. Provider files with HMRC: They submit Real Time Information (RTI) reports and handle tax payments
5. You receive reports: Get payslips, summaries, and records for your files

Your role is to supply accurate data on time. The provider handles the calculations, compliance, and payments.

Why outsource payroll?

Outsourcing your payroll brings several advantages:

• Time savings: Spend less time on payroll processing each month and more time growing your business
• Compliance protection: Stay current with frequently changing legal requirements—such as the recent delay to the mandatory payrolling of benefits in kind (BIK) until 2027. Mistakes can result in penalties from HMRC
• Cost efficiency: Benefit from automated software that processes payroll faster and may lower costs for some businesses, depending on headcount, complexity, and provider fees. For some businesses, especially smaller employers, outsourcing may cost significantly less than employing dedicated in-house payroll staff. Entry-level payroll roles in the UK typically start around £22,000–£28,000
• Error reduction: Benefit from software and review processes intended to reduce calculation errors, though service quality varies
• Specialist expertise: Get help with complex areas such as statutory maternity pay, statutory sick pay, and workplace pension processing, depending on the service scope
• Peace of mind: Let specialists handle complex calculations and legal requirements, reducing your stress and liability. Using a competent payroll provider may help reduce error risk, but employers remain responsible for meeting PAYE obligations

Is payroll outsourcing right for your small business?

Payroll outsourcing suits small businesses that want to save time, reduce compliance risk, or lack in-house expertise. But it's not essential for everyone.

Outsourcing makes sense when you:

• have five or more employees
• spend four or more hours monthly on payroll tasks
• handle complex situations like pensions, statutory pay, or multiple pay rates
• plan to grow your team
• want to reduce the risk of HMRC penalties

DIY payroll software might work better when you:

• have a small team (for instance, HMRC provides free Basic PAYE Tools software for businesses with fewer than ten employees)
• run a simple pay structure with consistent hours
• feel comfortable using software
• have a limited budget

Consider your current workload, growth plans, and comfort with compliance before deciding.

How much does payroll outsourcing cost?

Payroll outsourcing costs typically range from £2–£15 per employee per month, depending on your provider and service level.

Common pricing structures include:

• Per employee per month (PEPM): A fixed fee for each person on your payroll
• Per payslip: A charge each time you run payroll
• Setup fees: A one-off cost to onboard your business to the provider's system

Get quotes from several providers to compare costs and services before deciding.

What do payroll providers do?

Payroll services vary by provider, but most offer these core functions:

• Calculating pay: Working out wages, benefits, and reimbursements
• Deducting income tax: Withholding the correct amount from each employee
• Processing other deductions: Handling pension contributions and other withholdings
• Filing taxes: Submitting returns and payments to HMRC
• Paying employees: Transferring wages to bank accounts
• Maintaining records: Keeping accurate payroll documentation

Some providers also help you create a payroll numbers system to manage your employees.

Types of payroll service

Payroll services fall into two main categories based on how much work you want to handle yourself: full-service and do-it-yourself (DIY).

You can get these services from different types of providers:

• Specialist payroll companies: Focus solely on payroll services
• Accountants and bookkeepers: Offer payroll alongside other financial services
• Business size specialists: Some target small businesses, others serve larger companies

Full-service payroll provider

Full-service payroll means the provider handles everything from calculations to payments to tax filing. You provide employee data and they manage the rest.

Full-service payroll offers several benefits:

• Hands-off management: No payroll tasks for you to handle
• Day-to-day processing: The provider may handle payroll processing and reporting, but the employer remains legally responsible for PAYE compliance

This service comes with some requirements:

• Timely data sharing: Provide timesheets and employee changes promptly
• Higher fees: Expect to pay more for comprehensive service

Do-it-yourself (DIY) payroll providers

DIY payroll services handle complex calculations while you manage basic administrative tasks.

With DIY payroll, you handle these tasks:

• Time tracking: Recording employee hours and attendance
• Employee records: Maintaining basic staff information

The provider handles these tasks:

• Pay calculations: Working out wages, taxes, and deductions
• Software setup: Providing tools to streamline your tasks

FAQs on payroll outsourcing

Here are answers to common questions about payroll outsourcing.

What's the difference between full-service and DIY payroll?

Full-service payroll means the provider handles all tasks from calculations to payments to tax filing. DIY payroll means you manage basic tasks like time tracking while the provider handles complex calculations and compliance.

How long does it take to set up payroll outsourcing?

Setup typically takes one to two weeks. You'll need to provide employee data, banking details, and historical payroll information to your new provider.

Can I switch payroll providers?

Yes, you can switch providers. Most businesses switch at the start of a new tax year to simplify the transition, but you can change providers at any time.

Do I still need to know payroll regulations if I outsource?

While your provider handles compliance, you remain legally responsible for PAYE obligations. You should understand basic requirements and review reports from your provider.