There is no single standard UK price for outsourced HR. Current public small-business pricing uses monthly retainers, per-employee charges, hourly support and fixed project fees. A Guardian Forge market scan on 20 September 2026 found publicly advertised retained packages ranging from roughly £100 to £600+ per month, with ad-hoc work often priced separately. The scope behind those figures varies considerably, so headline price alone is a poor comparison.
For a business with 5, 15 or 40 employees, “HR support” can mean very different things. One provider may offer access to an advice line and templates. Another may include a named adviser, contract and handbook work, active case support, manager guidance and regular reviews. Both may be described as outsourced HR, yet they are not the same service.
The first budgeting question should therefore be: what do you need the provider to take responsibility for?
The main ways small businesses pay for HR support
| Model | How it works | When it can fit | What to check |
|---|---|---|---|
| Monthly retainer | A fixed recurring fee for an agreed level of ongoing support. | Businesses that want predictable cost and someone who understands the organisation over time. | Response times, casework limits, documents, meetings, contract length and exclusions. |
| Per employee | The monthly price increases with workforce size. | Growing teams where cost needs to scale with headcount. | Minimum charges, software fees, headcount changes and complex-work exclusions. |
| Pay as you go | You pay for the hours or days actually used. | Occasional, clearly defined issues where ongoing support is not yet needed. | Hourly rate, minimum billing blocks, availability and document drafting. |
| Project fee | A fixed price for a defined piece of work. | Contract/handbook reviews, investigations, restructures, policy projects or training. | Deliverables, revisions, meetings, implementation and scope changes. |
What makes the price go up or down?
Headcount matters, but it is only one variable. Two businesses with 20 employees can require very different levels of HR input.
- Existing documentation: current contracts and policies reduce initial remedial work.
- Employee-relations activity: absence, performance, disciplinary or grievance matters can require substantially more adviser time.
- Manager capability: some teams want occasional validation; others need step-by-step support through meetings, letters and decisions.
- Response expectations: same-day or out-of-hours access is a different proposition from scheduled advice.
- On-site support: face-to-face meetings, investigations or hearings add delivery time.
- Recruitment and organisational change: recruitment projects, redundancies, restructures and TUPE-style work may sit outside a standard retainer.
- Software: some packages include HR systems; others charge separately.
Why the headline monthly figure can be misleading
A £150 monthly package is not automatically better value than a £350 package, and the reverse is equally true. Compare the whole commitment and the practical service behind it.
Before comparing quotations, ask each provider what happens when a real problem lands on your desk. If an employee raises a grievance tomorrow, does the fee include reviewing the facts, helping plan the investigation, preparing correspondence and guiding the manager through the hearing? Or does it only include a telephone answer?
Outsourced HR, software or an internal hire?
HR software
Software can organise holidays, documents, employee records and workflows. It can reduce administration, but it does not make judgement calls for a manager or take responsibility for the reasoning behind a sensitive employment decision.
Outsourced HR
Outsourcing gives a smaller employer access to practical HR capability without building a full internal function. The value is greatest when the adviser understands the business rather than treating every query as an isolated call.
In-house HR
An internal hire can make sense when the volume of people work justifies a dedicated role. The cost comparison should include salary, employer National Insurance, pension, recruitment, training, systems and the operational impact of annual leave or absence — not salary alone.
How should a small business set an HR budget?
- List the HR work you currently handle internally: contracts, policies, absence, performance, recruitment, manager questions and employee relations.
- Identify the work that is being delayed, handled inconsistently or consuming director/manager time.
- Decide which activities you genuinely want an external provider to own or support.
- Ask providers to price the same scope so quotations are comparable.
- Calculate the annual and full-contract cost, including setup, software, additional casework and exit terms.
Questions to ask before signing an HR contract
- Will we have a named adviser who gets to know our business?
- What support is genuinely included in the monthly fee?
- Are contracts, policies and handbook updates included?
- What happens during a disciplinary, grievance, absence or performance case?
- What costs extra?
- What are the response times?
- Is there support outside normal office hours?
- How long is the minimum commitment and what are the exit terms?
- Who owns our documents and data if we leave?
How Guardian Forge approaches the conversation
Guardian Forge does not start with the assumption that every small employer needs the largest possible package. We begin by understanding the workforce, current documentation, management capability and the types of people issues the business is dealing with.
The aim is to identify what level of support would actually be useful, explain the scope clearly and allow the business to make an informed decision before committing.
Market note & useful official guidance
The pricing context above is based on publicly advertised UK SME HR pricing reviewed on 20 September 2026. Packages are not directly comparable and advertised prices are not a substitute for an individual quotation. For the employment-document obligations that often form part of HR support, see:
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