A fully managed UK payroll service typically costs between £4 and £12 per employee per month, and around 30.3 million people were on a UK payroll in mid-2026, every one of them requiring an employer to run compliant Real Time Information filings each pay period [1]. For a business paying five people, that headline figure sounds trivial. The real number is rarely just the headline.
Outsourcing payroll bundles a set of legal obligations, the pay run itself, the Full Payment Submission to HMRC, auto-enrolment administration and year-end reporting, into a single monthly charge. The question a business owner actually needs answered is not "what is the per-employee rate" but "what does the total bill look like once setup fees, pay frequency and the extras are added in, and how does that compare to keeping the work in-house".
This article sets out the standard pricing models, the cost drivers that push a quote up or down, the hidden extras that rarely appear on the first page of a proposal, and a like-for-like comparison against running payroll internally. It closes with how a per-payslip pricing model changes the arithmetic for a small or seasonal employer.
Key takeaways
- A standard managed UK payroll service costs roughly £4 to £12 per employee per month, with many bureaux adding a base fee of £25 to £60 on top.
- Setup and onboarding fees usually run from £100 to £1,000, covering data migration, PAYE and pension configuration and HMRC RTI linking.
- Pay frequency is the single biggest variable cost driver: weekly pay runs cost far more over a year than a monthly cycle because most providers charge per run.
- Year-end forms, P11D benefits reporting and off-cycle payments are common extras billed on top of the core fee.
- Running payroll in-house is never free once software licences, staff time and compliance risk are valued honestly.
What "outsourcing payroll" actually buys
Before comparing prices, it helps to define the product. A payroll bureau or managed service takes on the recurring statutory tasks an employer would otherwise perform every pay period. GOV.UK lists these regular tasks as recording each employee's pay, calculating deductions such as Income Tax and National Insurance, producing payslips, reporting to HMRC and paying what is owed [2]. Each of these is a legal duty, not an optional convenience.
The core service almost always includes gross-to-net calculation, payslip production, and the Full Payment Submission (FPS) that reports pay and deductions to HMRC on or before payday [3]. Most providers also file the Employer Payment Summary (EPS) in months where no employees are paid or where statutory recoveries are claimed [4].
The statutory floor every quote has to cover
Payslips are a legal requirement. Every employee and worker must receive an itemised payslip on or before payday, showing gross pay, variable deductions and net pay [5]. A payroll service that did not produce compliant payslips would not be fit for purpose, so this is baked into even the cheapest quote.
HMRC recognition sits underneath the whole arrangement. Any software submitting RTI at scale carries the HMRC Recognised badge, and it is a prerequisite rather than a premium feature [6]. When a business reads a payroll quote, the badge is assumed, so the price difference between providers comes from service depth, pay frequency and the extras, not from whether the underlying engine can file to HMRC.
Where auto-enrolment fits
Workplace pension duties are separate from PAYE but land in the same pay run. Every employer must assess staff for automatic enrolment, enrol eligible workers and pay contributions, with those duties overseen by The Pensions Regulator [7]. Some quotes fold auto-enrolment assessment into the base fee; others charge it as an add-on. The distinction matters, because assessment has to happen every pay period, not once.
The standard pricing models
UK payroll pricing clusters around three shapes: per-employee-per-month, per-payslip, and a fixed monthly fee for very small teams. Understanding which model a quote uses is the first step to comparing two proposals fairly.
The table below sets out the typical market ranges reported across UK payroll provider surveys. These are commercial prices, not statutory figures, so they move over time and vary by provider.
| Pricing model | Typical range | Best suited to |
|---|---|---|
| Per employee per month | £4 to £12 per employee | Stable headcount, monthly pay |
| Per payslip | £2 to £8 per payslip | Variable or seasonal headcount |
| Fixed monthly fee (micro teams) | £25 to £60 per month | 1 to 5 employees, simple pay |
| Base fee plus per-employee | £25 to £60 base, plus £4 to £10 each | Growing SMEs |
According to a Wise breakdown of UK payroll pricing, a standard managed service commonly sits at £4 to £10 per employee per month, with per-payslip pricing in the £3 to £8 band [8]. Startups.co.uk reports a similar picture, noting that many bureaux layer a monthly base fee of £25 to £60 on top of the per-head charge to cover software and secure HMRC filing [9].
What a five-person payroll typically costs
For a business with five employees paid monthly, the combined figure usually lands between £20 and £50 per month on a lean per-head model, or £50 to £100 per month once a base fee is included [8]. The spread is wide because it depends heavily on whether the provider charges a base fee and whether year-end work is included or billed separately [9].
The lesson for a small employer is to ask for the all-in monthly figure across a full tax year, not the per-employee rate in isolation. A £4 per-head quote with a £50 base fee costs more for a team of five than a £10 per-head quote with no base fee.
The cost drivers that move a quote
Two businesses with the same headcount can receive very different quotes. The variance comes from a handful of drivers that a provider prices against.
Pay frequency
Pay frequency is the largest single lever. Most bureaux charge per pay run, so a weekly payroll costs roughly four times as many runs per month as a monthly one. Weekly processing is often priced lower per run, at around £2 to £5 per employee, but the annual total is materially higher because there are 52 runs rather than 12 [10]. A business that can move a section of its workforce from weekly to monthly pay usually cuts its payroll bill sharply.
Headcount volatility and complexity
Complexity drives cost. High staff turnover means frequent starters and leavers, each requiring a new-starter setup or a P45 on departure [11]. Commission structures, multiple pay rates, salary sacrifice arrangements and statutory payments such as Statutory Sick Pay or Statutory Maternity Pay all add processing time, and providers price that time in [12].
The table below summarises how each driver tends to affect a quote.
| Cost driver | Effect on price | Why |
|---|---|---|
| Weekly pay run | Higher annual cost | More runs charged per year |
| High turnover | Higher | Frequent starter and leaver processing |
| Commission and bonuses | Higher | Extra calculation and checking |
| Statutory pay events | Higher | SSP, SMP and similar need manual handling |
| Stable monthly salaried team | Lower | Predictable, repeatable run |
Setup and onboarding
The one-off cost of getting started is easy to overlook. Setup fees for UK payroll outsourcing usually range from £100 to £1,000, depending on complexity, and cover migrating employee data, configuring PAYE and pension schemes, setting up the HMRC RTI link and initial parallel testing [9]. A business switching mid-year, carrying year-to-date figures across from a previous provider, typically pays more than one starting fresh at the beginning of a tax year.
The hidden extras
The base fee rarely covers everything. Several common tasks are billed on top, and they are the source of most "the bill was higher than the quote" complaints.
Year-end reporting
The P60 is a legal year-end obligation. Every employee still on the payroll on 5 April must receive a P60 by 31 May, summarising their pay, tax and National Insurance for the tax year [13]. Some providers include P60 production in the base fee; others charge a flat year-end fee or a per-employee rate for it. A business running its own numbers should confirm whether year-end is inside or outside the quote.
Benefits in kind
Where a business provides taxable benefits such as a company car or private medical cover, those must be reported to HMRC, historically on a P11D [14]. Benefits reporting is specialist work and is almost always billed separately from the routine pay run, often per form. Employers moving benefits into the payroll under HMRC's payrolling regime should ask how that transition is priced.
Off-cycle and correction runs
Additional payments outside the normal cycle, a mid-month leaver, a bonus run, or a correction to a submitted FPS, usually attract an extra charge. HMRC allows corrections through an amended FPS or an adjustment in the next period, but the administrative work behind a correction is real and providers price it accordingly [15]. Understanding a provider's policy on off-cycle runs prevents surprises.
In-house versus outsourced: the honest comparison
The strongest argument for outsourcing is that in-house payroll is never actually free. The visible cost is software; the invisible cost is time and risk.
Running payroll internally requires either a software licence, commonly £90 to £480 per year for a small business, or a dedicated payroll administrator whose salary sits well above £24,000 [16]. Between those two extremes sits the most common reality for an SME: an owner or office manager who spends hours each month on the pay run instead of on the business.
Valuing the time
Payroll admin absorbs time that has an opportunity cost. Industry comparisons suggest outsourcing removes a large share of the recurring admin burden, because the RTI submissions, auto-enrolment letters and year-end forms are handled by the provider rather than by internal staff [16]. For a business under 50 employees, that time saving is often the decisive factor rather than the headline fee.
The table below frames the comparison for a small employer.
| Factor | In-house | Outsourced |
|---|---|---|
| Software or service cost | £90 to £480 per year (software) | £4 to £12 per employee per month |
| Staff time | Significant, recurring monthly | Minimal |
| Compliance risk | Sits with the employer | Shared with the provider |
| Year-end and RTI | Done internally | Handled by the provider |
| Scalability | Manual as headcount grows | Priced per head or per payslip |
The compliance-risk transfer
Late or incorrect RTI filing carries penalties. HMRC can charge for late Full Payment Submissions, with the penalty scaling by the number of employees, and interest can accrue on late payments [17]. Outsourcing does not remove the legal responsibility, which always rests with the employer, but a reputable provider building the filing into its process reduces the chance of a missed deadline. For many small employers, that reduction in risk is worth as much as the time saved. Modern SME payroll software that holds the HMRC Recognised badge submits the FPS automatically, which narrows the gap between a managed service and a well-run in-house setup.
How per-payslip pricing changes the maths
The per-employee-per-month model assumes a stable headcount paid on a fixed cycle. Many UK businesses do not fit that shape. Seasonal hospitality, retail with a Christmas peak, and construction with project-based crews all see headcount swing through the year. Paying a fixed per-head fee for months when a worker is not paid is inefficient.
A per-payslip model prices the actual activity: the business pays for each payslip produced, so the cost scales with pay runs rather than with a headcount figure that may be out of date. For a business with fluctuating staff, this aligns the bill with reality. Moonworkers uses a per-payslip pricing model for exactly this reason, so cost tracks payroll activity rather than a fixed licence per employee.
The same logic helps the occasional employer. A sole trader or single-director company that pays one person, or a business that needs a single compliant payslip for a one-off payment, is poorly served by a monthly licence. An instant payslip generator or on-demand payslip service fits that need without a recurring commitment, and payroll for one-person businesses can be run on the same footing.
For accountants and bureaux managing many client schemes, the picture is different again. A multi-client payroll dashboard lets a practice run tens or hundreds of employers under one integration, and per-payslip pricing means each client's cost reflects its own activity rather than a flat licence across the book.
Conclusion
The true cost of outsourcing payroll is not the per-employee rate on the front page of a proposal. It is the annual total once the base fee, pay frequency, setup charge and the year-end and benefits extras are added together, then weighed against the software, staff time and compliance risk of doing the work in-house. For most small and mid-sized employers, once time is valued honestly, an outsourced or software-driven service costs less than it first appears and removes a recurring source of stress.
The direction of travel is towards pricing that follows activity rather than headcount, and towards compliance work that runs quietly inside the systems a business already uses. As payroll increasingly sits embedded in accounting platforms and HR tools rather than in a standalone bureau, the question for the next few tax years shifts from "how much does outsourcing cost" to "how little friction can the pay run carry".
Frequently asked questions
How much does it cost to outsource payroll for a small business in the UK?
For a business with around five employees paid monthly, outsourcing typically costs between £20 and £50 per month on a lean per-head model, rising to £50 to £100 per month once a base fee is included. The per-employee rate itself usually sits between £4 and £12 per month for a fully managed service. The all-in figure depends on pay frequency and whether year-end work is bundled or billed separately.
Is it cheaper to run payroll in-house or to outsource it?
It depends on how honestly the in-house cost is valued. Software alone can look cheap at £90 to £480 per year, but once staff time and compliance risk are included, the fully loaded cost of in-house payroll often exceeds an outsourced service for businesses under 50 employees. Outsourcing also transfers much of the day-to-day filing burden, though legal responsibility for accurate reporting always remains with the employer.
What hidden costs should a business watch for in a payroll quote?
The most common extras are year-end reporting such as P60 production, benefits-in-kind reporting for company cars or medical cover, setup and data-migration fees, and off-cycle or correction runs. Weekly pay runs also cost more over a year than monthly ones because most providers charge per run. Asking for the total annual cost, including all extras, gives a fairer comparison than the headline per-employee rate.
Does outsourcing payroll remove the employer's legal responsibility?
No. Using a payroll provider does not transfer the legal duty to report accurately and on time to HMRC; that responsibility stays with the employer. A reputable, HMRC-recognised provider reduces the practical risk of a missed deadline by building filing into its process, but the employer remains accountable for the accuracy of the data supplied and for meeting statutory obligations.
Image prompt for Imagen (also in frontmatter)
Documentary-style wide shot, a UK small business owner sitting at a busy office desk in a converted warehouse space, reviewing a printed payroll cost breakdown next to an open laptop and a calculator, soft daylight from a north-facing window, late morning, muted earthy palette of warm grey, oak, paper white, a red-brick office building visible through the window, off-centre composition with the subject in the right third, shot on a Leica Q3 at 28mm f/2.8, photojournalism, 35mm film grain, no AI artefacts, no warped hands, no warped text, landscape orientation 16:9.
