If you’re searching for HR services for small business because you’ve just had your first difficult exit, or you’re staring at a template contract wondering if it’s actually good enough, the short answer is: most small businesses need outsourced HR support somewhere between 5 and 15 employees, and it typically costs £100 to £500 a month on a retainer. Below that headcount, a good template and common sense usually cover you. Above it, the cost of getting a dismissal or a grievance wrong starts to outweigh what a retainer costs many times over.
This guide covers what an outsourced HR retainer actually includes, realistic UK pricing, when employment law advice genuinely earns its cost, how insurance-backed schemes work, and why relying on a downloaded template contract is riskier than most business owners realise.
HR services for small business: what you’re actually buying
“HR services” covers a wide range of things, and it’s worth being clear about which one you need before you start comparing prices. At the simple end, you’re buying an advice line, someone to call or email when a situation comes up, plus a library of template policies and documents. At the fuller end, you’re buying an ongoing retainer that includes proactive contract and handbook drafting, hands-on support through disciplinaries and grievances, and often insurance-backed protection if a claim actually lands.
Most small businesses start with the lighter option and grow into the fuller one as headcount and complexity increase. Neither is wrong; the right fit depends on how often people issues actually come up in your business, not just how many staff you have.
Outsourced HR for small business: what a retainer typically includes
A standard small business HR retainer generally covers:
- Unlimited or capped access to an advisory helpline, by phone or email, for day-to-day questions on everything from disciplinaries to maternity leave.
- Template and bespoke document drafting, contracts of employment, staff handbooks, and policy documents kept current with employment law changes.
- Hands-on support through formal processes, disciplinaries, grievances, and redundancies, sometimes including a consultant attending meetings with you.
- Ongoing compliance monitoring, so you’re not relying on remembering every legislative change yourself.
What’s typically not included, and billed separately, is specialist project work: TUPE transfers, large-scale restructuring, or preparing a full tribunal defence. These usually run at £150 an hour or more on top of a standard retainer, according to current UK market pricing.
HR support cost UK: realistic pricing by business size
Pricing in this market clusters fairly consistently across providers, though it does vary by headcount, sector and how much support you actually use.
- Advice line only (reactive phone and email support, template documents): roughly £200 to £500 a month.
- Small firm retainer (5 to 10 employees): roughly £100 to £250 a month.
- Medium firm retainer (15 to 30 employees): roughly £200 to £400 a month.
- Fuller, hands-on retainer (larger or more complex needs): £350 to £950 a month or more.
- Pay-as-you-go, no ongoing contract: £60 to £150 an hour, useful for a one-off issue rather than ongoing support.
- Specialist project work (TUPE, redundancy programmes, tribunal preparation): £150 an hour and up.
Per-employee pricing is also common among some providers, typically £5 to £30 per head per month depending on service depth, which can work out cheaper than a flat retainer for a stable, smaller team.
The comparison that actually matters: outsourcing versus hiring in-house
Here’s where the maths gets genuinely persuasive. A full-time HR manager in the UK currently commands a salary of roughly £45,000 to £70,000, and that’s before adding employer National Insurance at 15% above the secondary threshold, pension contributions, holiday cover, software, and recruitment cost. Once all of that’s added, the true annual cost of a single in-house HR hire commonly lands between £76,000 and £85,000 a year for a modest-sized business, according to current market analysis.
A comprehensive outsourced retainer covering the same ground typically costs £5,000 to £18,000 a year, depending on headcount and depth of service. For most businesses under roughly 30 to 50 employees, outsourcing delivers broader specialist knowledge for a fraction of the cost of one generalist hire, and it scales up or down as your headcount changes without a redundancy process of your own.
HR consultancy for small business: when employment law advice becomes worth paying for
This is the question underneath most of these searches: at what point does paying for HR support stop being a nice-to-have?
The honest answer, based on how the market prices this, is that the tipping point tends to arrive around 15 employees, though it can arrive much earlier if your first real people problem hits before then. What actually triggers the decision for most small businesses isn’t a headcount milestone; it’s the first genuinely difficult exit, the first grievance that could escalate, or the first moment you realise a decision you’re about to make could plausibly end up in front of a tribunal.
That moment matters more than the number on your payroll, because the financial exposure doesn’t scale down just because your business is small. For dismissals from 6 April 2026, the compensatory award for ordinary unfair dismissal is capped at the lower of £123,543 or a year’s gross pay, and that cap is due to be removed entirely from 1 January 2027 under the Employment Rights Act 2025. Discrimination claims carry no cap at all; the median disability discrimination award currently sits at £17,218, but the highest recorded award has reached close to £1 million, according to Ministry of Justice tribunal statistics.
Against those numbers, a few hundred pounds a month for proper advice before a difficult decision looks less like an overhead and more like insurance with a genuine return.
Do I need an HR advisor? A practical way to decide
Rather than fixating on headcount alone, ask yourself these questions:
- Have you handled a disciplinary or grievance in the last 12 months, and did it feel straightforward or genuinely uncertain?
- Are your current contracts and handbook based on a template you downloaded once and haven’t reviewed since?
- Do you know what changed under the Employment Rights Act 2025, and whether your current documents and processes reflect it?
- If an employee raised a grievance tomorrow, do you know exactly what the correct process is, start to finish?
- Would getting a dismissal wrong genuinely threaten your business financially, given current tribunal award levels?
If you answered no, or weren’t sure, to more than one of these, that’s a stronger signal than your employee count that support is worth exploring now rather than after something goes wrong.
The role of insurance-backed HR schemes
Many HR retainers, particularly from providers like The HR Dept and Peninsula, bundle in employment tribunal insurance as standard, sometimes covering legal costs and compensation awards up to £2 million. This typically covers legal representation at a hearing, litigation management, and the costs of defending a claim, on top of the advisory and document support already included in the retainer.
It’s worth understanding what this insurance actually protects against. Tribunals rarely award costs in an employer’s favour even when they win, and even a successful defence usually still leaves you with a legal bill unless it’s covered. Insurance-backed schemes exist specifically to close that gap, and for a small business without deep reserves, that protection can matter as much as the day-to-day advice itself.
That said, insurance works best alongside good practice, not instead of it. Providers are generally clear that cover is most effective when paired with proper contracts, documented processes, and advice sought before a decision is made, rather than treated as a backstop for winging it and hoping.
The risk of relying on template contracts
This is worth being blunt about, because it’s where a lot of small businesses genuinely expose themselves without realising it. A downloaded or generic template contract might tick the box of “having a contract,” but it doesn’t automatically reflect your specific business, your sector, or the current state of UK employment law, which has moved considerably with the Employment Rights Act 2025.
A template that was accurate two years ago may now be missing day-one rights that have since taken effect, outdated notice provisions, or clauses that simply don’t hold up if a dispute goes to tribunal. The gap between “a contract exists” and “a contract that actually protects the business” is exactly where HR consultancy earns its fee, since a properly reviewed contract and handbook reduce the likelihood of a dispute reaching tribunal in the first place, not just the cost of defending one that does.
If your current contracts and policies haven’t been reviewed in the last 12 to 18 months, that’s a reasonable prompt to get them checked, even if you’re not ready to commit to an ongoing retainer yet.
FAQs
How much do HR services cost for a small business in the UK?
Most small businesses pay £100 to £500 a month on a retainer, or £60 to £150 an hour for pay-as-you-go support. Pricing depends on headcount, how much support you use, and whether you want a reactive advice line or a fuller, hands-on service.
When does a small business need an HR advisor?
There’s no fixed headcount trigger, though the tipping point commonly sits around 15 employees. The more reliable signal is your first genuinely difficult exit, grievance, or decision that could plausibly end up in front of a tribunal, whichever headcount that happens at.
Is outsourced HR cheaper than hiring an in-house HR manager?
Yes, for most businesses under roughly 30 to 50 employees. A full-time HR manager typically costs £76,000 to £85,000 a year once salary, National Insurance, pension and overheads are included, against £5,000 to £18,000 a year for a comprehensive outsourced retainer.
What does an HR retainer usually include?
Most retainers include an advisory helpline, template and bespoke document drafting, and hands-on support through disciplinaries, grievances and redundancies. Specialist project work like TUPE transfers or full tribunal preparation is usually billed separately at £150 an hour or more.
Is a template employment contract good enough for a small business?
It depends entirely on how current and specific it is. A generic template that hasn’t been reviewed in the last year or two may be missing recent legal changes, including day-one rights introduced under the Employment Rights Act 2025, which can leave the business exposed if a dispute reaches tribunal.
What’s the maximum compensation an employee can be awarded at tribunal?
For ordinary unfair dismissal, compensation is capped at the lower of £123,543 or a year’s gross pay for dismissals from 6 April 2026, though this cap is due to be removed entirely from 1 January 2027. Discrimination claims carry no cap at all, and the highest recorded award has reached close to £1 million.
Does HR insurance cover the cost of a tribunal claim?
Many outsourced HR retainers include employment tribunal insurance, covering legal costs and compensation up to £2 million with some providers. It typically covers legal representation and litigation management, but works best combined with proper contracts and advice sought before decisions are made, not as a substitute for good practice.
Can I start with pay-as-you-go HR support and move to a retainer later?
Yes, and many small businesses do exactly this. It’s a sensible way to test whether ongoing support genuinely adds value for your situation before committing to a monthly contract.
