Most small businesses don’t have an HR department. They have a senior manager, or the owner, handling HR alongside everything else they’re actually meant to be doing, usually without formal HR training. That gap is exactly what HR outsourcing is designed to fill, and for many small businesses, it fills it considerably more cheaply than expected.
Direct answer: most UK small businesses pay £100 to £500 a month for outsourced HR on a retainer model, considerably less than the £45,000 to £70,000 a year an in-house HR manager typically costs including salary and overheads. Outsourcing genuinely earns its cost once you’re managing real employment risk, contracts, disciplinaries, compliance, without anyone in the business qualified to handle it confidently.
What outsourced HR typically covers
- Employment contracts and policies, drafted and kept current with changing employment law
- An advice line for day-to-day questions, disciplinary situations, or difficult conversations
- Compliance support, helping you stay on the right side of current employment legislation
- Recruitment and onboarding support, from job postings through to new starter paperwork
- Health and safety guidance, often bundled with broader HR support for a small business
Typical UK pricing in 2026
| Business size | Typical monthly cost |
|---|---|
| Small firm, 5 to 10 employees | £100 to £250 |
| Medium firm, 15 to 30 employees | £200 to £400 |
| Larger or more complex needs | £500 to £800+ |
| Specialist project work (redundancy, tribunal prep) | £60 to £150+ per hour, on top |
Some providers price per employee instead, commonly £5 to £20 a month per person for basic advisory support, rising to £20 to £50 or more for a fully managed service.
Pricing models compared
| Model | How it works | Best for |
|---|---|---|
| Fixed monthly retainer | A set fee for agreed, ongoing support | Predictable budgeting, most common in 2026 |
| Advice line only | Reactive phone and email support as needed | Very small businesses with infrequent HR needs |
| Pay-as-you-go | Hourly or project-based, billed as issues arise | Occasional, specific situations rather than ongoing support |
Why outsourcing is usually cheaper than it looks
An in-house HR manager costs roughly £45,000 to £70,000 a year once salary, employer National Insurance, pension contributions and overheads are included. Outsourced HR for a similarly sized business often costs a fraction of that, since you’re paying for shared expertise across many clients rather than one dedicated salary.
What you give up by not having in-house HR
Outsourced HR won’t have the same day-to-day presence or deep familiarity with your team that an in-house person builds over time. For a very small business, this trade-off is usually worth it. As a business grows toward 30 or more employees, the balance can shift toward at least a part-time in-house presence, sometimes alongside continued outsourced support for specialist matters.
Signs it’s time to bring in HR support
- You’re unsure whether your employment contracts and policies are actually compliant
- A disciplinary or grievance situation has arisen and nobody feels confident handling it correctly
- You’re growing and need consistent, repeatable onboarding and recruitment processes
- You’ve had a near-miss, a situation that could easily have become a legal problem without the right handling
Choosing a provider
- Check for genuine, relevant qualifications, such as CIPD accreditation, among the consultants you’d actually be working with
- Clarify exactly what’s included in the retainer, and what counts as a separately billed extra
- Ask about response times, particularly for urgent situations like a disciplinary matter
- Confirm they’ll get to know your specific business, not just apply generic templates regardless of your situation
FAQs
How much does HR outsourcing cost for a small business in the UK? Most small businesses pay £100 to £500 a month on a retainer model in 2026, depending on team size and the scope of support included, considerably less than an in-house HR manager’s salary and overheads.
Is outsourced HR as good as having an in-house HR manager? For most small businesses, yes, in terms of expertise and compliance support, though it lacks the same constant day-to-day presence. As a business grows past around 30 employees, a hybrid approach often makes sense.
What’s included in a typical HR outsourcing retainer? Most retainers cover contracts and policies, an advice line for day-to-day questions, compliance support, and often recruitment and onboarding assistance. Specialist work like redundancies or tribunal preparation is usually billed separately.
Can I start with a lighter HR support option and upgrade later? Yes, this is common. Many small businesses start with an advice-line-only service and move to a fuller retainer as their team and HR needs grow.
