How to Outsource Payroll for Your Business

This guide provides general payroll information and is not tax, legal, employment or data-protection advice. Responsibilities can vary according to your business, workforce and payroll arrangements. Check current official guidance or seek appropriate professional advice where necessary.

If you want to know how to outsource payroll, start by deciding which responsibilities you want a provider to take on and which will remain within your business. Then compare providers on service scope, payroll experience, data handling, communication and the practical arrangements for moving your existing payroll across.

Outsourcing does not remove your responsibilities as an employer. Your business still needs to provide accurate information, understand the approval process and know who is responsible for each deadline. Those details should be clear before the first outsourced pay run begins.

Work out what you actually need from a provider

Before comparing payroll companies, map out what happens during a normal pay period.

Look at who currently collects hours, processes overtime, manages starters and leavers, checks pension contributions, approves changes, answers employee queries and signs off the final payroll.

Then decide what you want to retain internally.

A simple brief might cover:

Area	What to establish
Pay frequency	Weekly, fortnightly, monthly or multiple payrolls
Workforce	Employee numbers and different pay arrangements
Variable pay	Overtime, bonuses, commission or changing hours
Pensions	Scheme details and administration required
Reporting	PAYE, RTI and management reporting requirements
Employee queries	Whether your team or provider will respond
Payments	Who authorises and makes employee and HMRC payments
Approval	Who reviews and signs off each payroll

The aim is to establish the service scope before processing starts, including what the provider will handle and what stays with your team.

That also makes quotations easier to compare because you are asking each provider to respond to the same set of requirements.

Compare more than the monthly price

Payroll pricing matters, but it should be assessed alongside the service itself.

Compare the quotation with the provider’s cut-off dates, approval process, data handling, support arrangements and what happens when something falls outside the normal payroll routine.

Useful questions include:

• Which payroll tasks are included in the quoted fee?
• What would result in an additional charge?
• Who will be our regular point of contact?
• When must payroll changes reach you?
• How long will we have to review the draft payroll?
• How are starters and leavers processed?
• Can you work with our existing pension arrangements?
• How are late or corrected payroll inputs handled?
• Which reports will we receive?
• How will payroll data be transferred?
• Do you use subcontractors?
• Where will our payroll information be processed?

If overseas processing is relevant to your supplier assessment, our article on offshoring payroll and employee data covers some of the questions employers may want to consider.

The location of processing should not be treated as a substitute for proper due diligence. What matters is understanding how the provider handles your information, who can access it and what contractual and security arrangements apply.

Be clear about what remains your responsibility

Appointing a payroll provider does not transfer all PAYE responsibility away from the employer.

HMRC’s guidance on using a payroll provider states that employers remain legally responsible for completing PAYE tasks even when another organisation runs payroll on their behalf.

Your provider may calculate and process payroll from the information supplied, but your business still needs a reliable way to communicate changes such as:

• new starters
• leavers
• salary changes
• hours worked
• overtime and bonuses
• sickness or family-related leave
• changes to employee details
• authorised deductions
• other information affecting pay

Document who supplies each payroll input, who processes it and who gives final approval. This is a practical control rather than a substitute for understanding the legal responsibilities that remain with the employer.

Check how employee data will be handled

Payroll information can include names, addresses, National Insurance numbers, salary information, bank details and other personal employee data.

Before anything is transferred, check the provider’s arrangements for data transfer, access, storage and any sub-processors they use.

Where a payroll provider acts as a processor of personal data on your behalf, current ICO guidance on contracts between controllers and processors requires the relationship to be covered by a written contract or other binding legal act containing specified data-protection terms.

Whether a provider acts as a controller, processor or in another capacity depends on the actual processing arrangement, so this should be confirmed rather than assumed.

Questions worth resolving before payroll data is shared include:

• How will payroll files be transferred?
• Who within the provider can access them?
• Are any sub-processors involved?
• Where is the data processed and stored?
• What access controls apply?
• How is access to payroll data removed when provider staff leave or change roles?
• What happens to your data when the service ends?

These questions form part of normal supplier due diligence. They are particularly important with payroll because of the nature of the employee information involved.

Plan the handover before setting a go-live date

Once you have chosen a provider, attention should turn to the transfer itself.

The information needed will depend on your payroll and when you move during the tax year, but it can include:

• employee records
• employer PAYE details
• payroll IDs
• tax codes
• salary or hourly rates
• year-to-date gross pay
• tax and National Insurance deducted
• pension information
• student loan deductions
• statutory payment information
• attachment orders
• starter and leaver records

If another payroll bureau currently holds some of this information, establish who will request it and the format in which the new provider needs it.

Our guidance on switching payroll providers also looks at some of the practical concerns businesses have when moving away from an existing provider.

Reconcile the opening figures

Receiving the data is only part of the handover.

As a practical payroll control, opening and year-to-date figures should be checked against the outgoing payroll records before the first live run. Depending on the payroll, that can include:

• gross pay to date
• Income Tax
• National Insurance
• pension deductions
• student loan deductions
• statutory payments
• employee payroll IDs
• starter and leaver information

This matters particularly during a mid-year move because the incoming payroll needs to continue from figures already processed and reported during the same tax year.

Any unexplained difference should be investigated before the next live payroll wherever possible.

Agree how information will move each pay period

The new provider should not only explain what happens during onboarding. You also need to know what the normal payroll cycle will look like afterwards.

A typical working process might involve:

1. Your business submitting approved payroll changes by an agreed cut-off.
2. The provider processing the payroll using that information.
3. Queries or exceptions being returned for clarification.
4. An authorised person reviewing the draft.
5. The payroll being approved.
6. The provider completing the agreed reporting and payroll outputs.
7. Employee and HMRC payments being made by whichever party has agreed responsibility.

The exact arrangement will vary.

What matters is having a clear point at which information becomes final, who is allowed to approve it and what happens when a correction is needed after approval.

Confirm how pension duties will be handled

If pension administration forms part of the service, establish precisely which tasks the provider will perform.

The Pensions Regulator explains in its automatic-enrolment guidance that an adviser or provider can carry out tasks for an employer, but the employer remains responsible for making sure its legal duties are met.

Depending on your arrangement, clarify who will:

• assess workers
• calculate contributions
• send pension information
• process opt-ins or opt-outs where applicable
• manage relevant employee communications
• identify changes affecting eligibility
• maintain required pension records

Do not assume that pension administration is automatically included simply because payroll processing is being outsourced.

Can you outsource payroll in the middle of the tax year?

A payroll-provider change can be arranged during the tax year, but the handover needs to preserve accurate employee and year-to-date payroll information.

Mid-year moves require particular care because the incoming system or provider is continuing figures that have already been processed during the same tax year.

Before choosing a transfer date, consider:

• your next payroll cut-off
• the next payday
• how quickly records can be supplied
• whether year-to-date figures have been reconciled
• employee payroll IDs
• upcoming starters and leavers
• pension deadlines
• the time needed for setup and testing

Choosing a realistic transfer date is more important than forcing the move to coincide with a particular calendar date.

Where payroll software is also changing, follow the relevant HMRC guidance for transferring employee information so that payroll records and identifiers continue correctly.

Warning signs to clarify before signing

If a prospective provider cannot clearly explain responsibilities, data handling or the approval process, resolve those points before agreeing the service.

Areas that warrant further questions include:

• an unclear division of payroll responsibilities
• pricing that does not explain what is included
• no documented cut-off or approval process
• uncertainty about where data is processed
• unclear arrangements for transferring sensitive information
• no defined onboarding requirements
• uncertainty about what happens when payroll information arrives late
• no explanation of how corrections are managed

These points do not automatically mean a provider is unsuitable. They do mean you need clearer answers before employee payroll data and ongoing responsibilities are transferred.

Moving your payroll to Augustus Payroll

Once you decide to outsource, the practical handover becomes the priority.

Our outsourced payroll service covers recurring payroll processing, payslip distribution, RTI submissions and pension administration. Our published onboarding process moves through consultation, data migration, payroll setup and testing before the new payroll goes live.

Your business still provides the information needed for processing and remains involved in the appropriate approval process.

If you are considering a move, we can discuss your current payroll setup, establish what information would need to transfer and look at how the change could fit around your existing pay dates.

Get the responsibilities clear before the first live run

A successful payroll handover depends on more than choosing a provider and transferring employee records.

Know exactly what the service includes, check how sensitive information will be handled, reconcile the opening payroll figures and document who provides, processes and approves each part of the pay run.

Resolve any unexplained payroll differences and unclear responsibilities before the first live run. That gives both your business and the provider a clearer basis for managing the payroll from one pay period to the next.