For a growing employer, understanding the cost of Small Business Payroll Services London providers offer is important before deciding whether to outsource payroll or keep it in house. A small payroll may appear straightforward, but PAYE, National Insurance, Real Time Information, workplace pensions, statutory payments, P45s and P60s all need to be handled correctly.

The cost of Small Business Payroll Services London businesses receive can vary considerably. Some providers charge per payslip, while others use a fixed monthly fee, employee based pricing or a package combining payroll with bookkeeping and accounting. Current published London and UK provider prices show examples ranging from roughly £25 to £50 or more per month for simple payroll arrangements, while per payslip prices can range from around £1.50 to £7 or more depending on what is included.

Understanding Small Business Payroll Costs in London

What Do Small Business Payroll Services London Providers Usually Charge?

There is no single HMRC approved payroll fee. The amount an employer pays a payroll bureau or accountant is a commercial service charge rather than a tax.

For a very small business with only one or two employees, a provider may charge a fixed monthly fee. Other firms calculate the fee according to the number of employees and the number of payroll runs.

Published prices demonstrate this variation. One provider currently advertises payroll from £3.25 per payslip, while another publishes £20 for up to five employees on monthly payroll and £1.50 per payslip for larger monthly payrolls.

As a practical budgeting guide, a small employer might encounter:

These are market examples rather than regulated prices. VAT may also be added where applicable.

Why Does Payroll Pricing Vary So Much?

Employee numbers are only one part of the calculation. A five employee business can actually require more payroll work than a ten employee company if it has weekly wages, irregular bonuses, statutory payments and pension changes.

A provider will normally consider:

• Number of employees and directors

• Monthly, fortnightly or weekly payroll frequency

• Number of payroll runs

• New starters and leavers

• Workplace pension administration

• Statutory Sick Pay and statutory family leave

• Benefits in kind

• P11D requirements

• CIS involvement

• Payroll corrections

• HMRC correspondence

• Whether the payroll needs to integrate with accounting software

This is why comparing providers purely on the cheapest advertised payslip price can be misleading. A £3 payslip may not represent the same service as a £7 payslip if one package includes pension processing, year end work and HMRC support while the other charges separately for each item.

What Should Be Included in a Professional Payroll Package?

A properly managed payroll service should do substantially more than produce a payslip.

For a normal PAYE payroll, the service may include calculating gross pay, Income Tax, employee National Insurance, employer National Insurance and pension deductions before producing payslips.

The provider should also deal with Real Time Information reporting. HMRC requires employers to submit a Full Payment Submission on or before the day employees are paid, subject to specific exceptions. An Employer Payment Summary may also be required in relevant circumstances.

A comprehensive package may therefore include:

• PAYE payroll calculations

• FPS and EPS submissions

• Payslips

• P45s for departing employees

• P60s at the end of the tax year

• Tax code updates

• Statutory payment calculations

• PAYE and National Insurance reports

• Payroll year end processing

The important question is not simply “How much does payroll cost?” but “What work is covered by the quoted price?”

How Many Employees Affect the Monthly Cost

Payroll providers often use employee numbers to determine their workload. However, pricing structures differ.

For example, a provider may charge £50 per month for a small payroll regardless of whether the business has three or five employees. Another may charge £3 to £5 for every payslip produced.

A monthly payroll for five employees therefore could potentially cost only a few tens of pounds with a basic bureau, while a more comprehensive accountant managed service could be considerably higher.

Weekly payroll changes the calculation. Fifty two payroll runs create substantially more processing than twelve monthly runs. Providers therefore commonly charge more for weekly payroll.

For a London restaurant, cleaning company or construction business paying workers weekly, the difference can be significant.

How UK Tax and National Insurance Rules Affect Payroll Work

Payroll pricing also reflects the complexity of the underlying calculations.

For the 2026/27 tax year, the standard employee Personal Allowance remains £12,570, while the basic Income Tax rate is 20%, the higher rate is 40% and the additional rate is 45%, subject to the applicable income bands and individual circumstances.

For most employees, Class 1 National Insurance is charged at 8% between the Primary Threshold and Upper Earnings Limit, with 2% applying above the Upper Earnings Limit.

Employer Class 1 National Insurance is generally 15% above the Secondary Threshold for the 2026/27 tax year.

This matters because payroll software must correctly apply employee category letters, thresholds, tax codes and National Insurance rules. A payroll provider is charging for the responsibility of getting these calculations and submissions right, not simply typing figures into software.

Choosing the Right Payroll Service for Your London Business

Is Cheap Payroll Always the Best Option?

A low payroll fee is not necessarily poor value, just as a higher fee does not automatically mean better service.

Suppose a small company is quoted £30 per month for payroll. That might be perfectly reasonable if the arrangement covers five employees, monthly processing, RTI submissions and year end documents.

However, if pension uploads cost extra, every starter and leaver attracts a separate charge, corrections are billed hourly and P11Ds are excluded, the final annual cost could be considerably higher.

A sensible comparison should therefore calculate the total expected annual cost rather than comparing one headline figure.

What Extra Charges Should a Small Employer Ask About?

Before signing an engagement letter, ask the provider to identify additional charges.

Common extras can include:

• PAYE scheme registration

• Payroll software setup

• Workplace pension setup

• Pension contribution uploads

• New starter processing

• Leaver processing and P45s

• P11D preparation

• Benefits in kind

• Payroll corrections

• Emergency or off cycle payroll runs

• HMRC enquiry assistance

• CIS payroll

• Historical payroll corrections

For example, one London provider publishes a standard payroll price but separately lists auto enrolment setup and ongoing pension administration, while another London provider advertises payroll from £25 plus VAT per month for simple director payroll and from £50 plus VAT for small employer payroll.

How Much Could Payroll Cost for a Five Employee Business?

Consider a London consultancy with five employees paid monthly.

If a provider charges £5 per payslip, twelve monthly payroll runs would produce:

5 employees × £5 × 12 months = £300 per year

That equals £25 per month before VAT and any additional services.

A provider charging a fixed £50 monthly fee would cost £600 per year before VAT.

Neither price should automatically be regarded as expensive or cheap. The comparison depends on what each package contains.

If the £50 service includes RTI submissions, tax code changes, P45s, P60s, pension administration and routine payroll queries, it could be more comprehensive than the £25 arrangement.

What About Employment Allowance and Employer National Insurance?

Payroll costs should not be confused with the employer's actual tax liabilities.

Eligible employers may claim Employment Allowance against employer Class 1 National Insurance. For 2026/27, the maximum Employment Allowance is £10,500, although eligibility conditions apply. A company with only one director cannot normally claim if that director is the only employee liable for secondary Class 1 National Insurance.

This can be particularly relevant to small companies when assessing overall employment costs.

For example, a company may pay an accountant £50 per month for payroll while separately paying PAYE and National Insurance to HMRC. The payroll service fee is the administrative cost; PAYE and NIC are statutory liabilities.

Keeping those two categories separate makes business budgeting much clearer.

When Does Outsourcing Payroll Make Financial Sense?

For a very small company, outsourcing can remove a substantial amount of administrative responsibility.

Imagine a business owner spending two or three hours every month checking payroll figures, updating tax codes, preparing pension information and dealing with payroll software. There is also the risk of missing an HMRC deadline.

HMRC states that an FPS normally needs to be submitted on or before payday. Late filing can result in penalties, depending on circumstances and employer size.

Outsourcing does not remove the employer's legal responsibilities entirely, but it can place the routine payroll administration with someone who handles PAYE and RTI submissions every working day.

For an owner whose time is better spent generating sales, managing staff or serving clients, the value may therefore extend beyond the invoice from the payroll provider.

What Should You Ask Before Hiring a London Payroll Provider?

Before accepting a quotation, ask for a written breakdown of exactly what you are buying.

A useful checklist includes:

• Is the quoted price monthly or per payslip?

• Is VAT included?

• Are RTI submissions included?

• Are P45s and P60s included?

• Are starters and leavers charged separately?

• Is auto enrollment included?

• Are pension uploads included?

• Are statutory payments included?

• Are payroll corrections charged separately?

• Is HMRC correspondence included?

• Are P11Ds included?

• Is CIS payroll available if required?

• What happens when the number of employees increases?

A good provider should be able to explain the fee without hiding behind a vague “from” price.

For most small London employers, a realistic expectation is that straightforward payroll can often be obtained for tens of pounds per month, while more involved payroll arrangements can cost substantially more. Published market examples support monthly fees from around £20 to £75 for smaller arrangements and per payslip charges commonly ranging from around £1.50 to £7 or more, with complexity, frequency and additional compliance services driving the final quotation.

The right comparison is therefore the total annual cost for the exact payroll service your business needs, including PAYE reporting, pension administration, year end documents and any likely additional work. That approach gives a much more realistic picture than choosing a provider solely because its advertised price is the lowest.