You've probably seen the same thing happen again and again. A recruiter sends over a promising role, the day rate looks fine at first glance, and then the small print starts to move the goalposts. One agency quotes a neat percentage, another talks about an umbrella rate, and by the time you've stripped out margin, employer costs, VAT, and tax treatment, the number you thought you were accepting is no longer the number that reaches your company account.
That's why recruitment agency fees deserve a proper breakdown, not a lazy percentage and a shrug. In the UK contractor market, the question is never just “what does the agency charge?”. It's who pays, what the fee is attached to, and how much of the quoted rate is already spoken for before your limited company sees a penny.
What Recruitment Agency Fees Really Mean in the UK
A contractor gets two agency offers on the same role. Both sound competitive. One is presented as a simple placement fee, the other as a day rate with margin buried inside it. On paper they can look similar, but the money is being split in very different ways once the client, the agency, and the limited company each take their share.
The plain reading of recruitment agency fees is this. The client buys labour, the agency sells access, speed, and admin support, and the contractor receives what is left after the commercial structure is stripped out. For permanent hires, the agency usually charges the hirer a percentage of salary. For temporary and contract work, the agency usually builds its margin into the bill rate rather than charging one clean one-off fee, as set out in UK guidance and industry benchmarks from the REC-linked fee summary and UK hiring cost guidance.
What the headline percentage hides
A flat percentage is useful for selling the deal, but it tells you very little about the cost stack. A permanent placement fee says something about the search price. It says nothing about the worker's tax treatment, the client's employment costs, or whether the agency is taking a thin margin up front and recovering it elsewhere.
Practical rule: if an agency will not say whether the number is a permanent placement fee, a temporary margin, or a transfer fee trigger, you are not comparing like with like.
The same role can also land very differently depending on whether you are trading through a limited company, through an umbrella company, or inside IR35. The agency margin can sit on top of the rate, the client can absorb employer costs, and the contractor's take-home can still move sharply even when the day rate looks identical in the email.
Use the company view, not the recruiter's brochure. If you are working through a personal service company, read the structure properly before you decide whether the assignment is worth taking. For a clearer company-level explanation, see what a personal service company is.
Who Pays and What the Law Actually Allows
Start with the basic rule, because it is a point where a lot of contractor budgets get distorted. In normal UK recruitment, the hirer pays the agency, not the candidate. That means the invoice sits between the client and the agency, while the worker's pay is a separate question.
The law is also tighter than the sales script. Agencies and employment businesses are generally not allowed to charge work-seekers a fee just for placing them into work, with narrow exceptions for performers and certain entertainment workers, plus photographic or fashion models. They can charge for separate services such as CV writing, training, or transport, but only if they give full written details of the fee, the cancellation right, and the notice period in advance, and they cannot make those services a condition of getting work, according to the Employment Agencies Act brief guide.
The transfer fee trap
The invoice that catches people out is the transfer fee. If a temp becomes a perm, an agency can only charge the hirer if the contract gave the hirer the option to extend the assignment, the hirer did not take that option, and the hirer gives the worker a permanent job within the protected period, either within 8 weeks of the assignment ending or within 14 weeks of it starting, whichever ends later, as explained in GOV.UK transfer fee guidance.
That clause matters because many clients sign first and read later. If the agency never offered the extended hire option, it cannot spring a transfer fee on the hirer. If there is a gap of more than 42 days between assignments, the later assignment is treated as a fresh first assignment for that test.
There is a second trap as well. If a worker is introduced by one agency and then hired through another during the protected period, the original introducing agency may still be able to charge a transfer fee, but only if the extended hire option was properly offered, as noted in the GOV.UK agency hiring guidance.
The practical rule is simple. Read the contract before the temp starts, not after the manager decides they want to keep them. If the transfer wording is vague, the agency has kept room to invoice later.
Permanent Placement Fees and Temporary Mark-Ups Compared
Permanent recruitment and temporary staffing are commercial models with different cost stacks. They are priced differently, carry different risk, and land differently in the client's accounts. Treat them as the same and you will argue over the wrong number.
Permanent placements are usually priced as a percentage of the candidate's first-year salary. In the UK, contingency recruitment commonly sits around 15% to 25%, with higher fees for harder-to-fill or more senior roles because the agency is being paid for search effort, market reach, and speed, as set out in market fee guidance. The UK fee summary from GoHire, drawing on REC-cited material, puts the average around 18% in 2021, with fees often in the 15% to 20% band and rising to 30% for niche roles. On that basis, a £50,000 hire lands somewhere in the region of £7,500 to £10,000, with specialist searches reaching £15,000 (GoHire UK fee summary).
Why temp mark-ups are a different beast
Temporary and contract hiring usually uses a margin or mark-up model, not a single placement fee. The agency adds its margin to the worker's pay rate, and that margin has to cover payroll administration, employer costs, and the risk of a bad fill. staffing pricing guidance makes that structure plain. Recruitly's UK guidance also separates temporary worker fees, temp-to-perm fees, and permanent placement fees as different commercial models, not one blended charge (Recruitly fee overview).
That difference matters because a permanent fee is a one-off success charge, while a contract mark-up sits on every hour billed. A permanent fee is easy to compare across agencies. A contract mark-up only makes sense when you know what the worker is paid, who carries the employment burden, and whether the client is also swallowing payroll costs.
A day rate and a take-home rate are not the same thing. For the underlying tax mechanics of gross and net pay, see gross and net pay explained.
Best comparison rule: ask whether the charge is a salary percentage or an hourly mark-up, then compare like with like.
How Agency Fees Flow Through to Contractor Take-Home Pay
Finally, many people see the sting. A day rate isn't your take-home. It's just the starting point of a chain that passes through the agency margin, employer costs, tax treatment and, sometimes, umbrella deductions before anything reaches you.
Take a £450 daily assignment rate as the commercial anchor. If the agency is working on a temporary or contract margin model, that rate is not the contractor's pay. It's the bill rate. The agency keeps its margin, the employer absorbs the employment burden if applicable, and the worker's net depends on whether the engagement sits outside IR35, inside IR35, or through an umbrella company. For the underlying tax mechanics of gross and net pay, see gross and net pay explained.
Outside IR35 through a limited company
If the role is outside IR35 and you invoice through your limited company, the company can usually treat the agency invoice as business income and pay itself in the normal contractor mix of salary and dividends, subject to the company's own tax position. The agency margin still reduces the bill rate available to the market, but the structural impact is different from employment-style deductions because your company is being paid for a business-to-business supply, not payroll wages.
Umbrella company engagement
An umbrella company changes the picture completely. The umbrella sits between you and the agency, receives the gross amount, then runs payroll after deductions. That means holiday pay, employer costs, and umbrella administration sit in the stack before you see anything like your day rate in hand.
Inside IR35
Inside IR35 is the bluntest model for take-home. The client must treat the engagement like employment for tax purposes, so the rate that looked healthy can be eroded by PAYE-style deductions once the chain is settled. The agency margin is still there, but now the tax treatment bites much harder into the headline figure.
The practical lesson is simple. The same £450 rate can produce very different outcomes depending on who pays the agency and how the engagement is structured. If you're comparing offers, compare the bill rate, the agency margin, and the tax route together, not separately.
VAT and Tax Treatment for Limited Companies Paying Agency Fees
For a UK limited company, recruitment fees are usually just another deductible business expense. That doesn't make them cheap. It just means the company normally gets tax relief for the cost in the same way it would for other trading expenses, provided the expense is incurred wholly and exclusively for the business.
The VAT point is where directors often get sloppy. In ordinary UK arrangements, agency fees are typically invoiced with standard-rated VAT at 20% on top of the fee, unless the supply is outside the UK VAT system or otherwise treated differently. If you run a VAT-registered company, that affects cash flow even when the VAT is recoverable later. For wider VAT context, see VAT registration benefits.
What to check on the invoice
A proper invoice should show what the agency has charged for. Permanent recruitment fees, temporary margins and transfer charges should not be lumped together as if they were interchangeable. If they are, you've got a billing document that hides the commercial reality.
- Check the supply type: permanent placement, temporary mark-up, temp-to-perm transfer, or ancillary service.
- Check the VAT line: if VAT is shown, it should be clear what it applies to.
- Check who the contractual client is: the legal payer matters for both cash flow and accounting treatment.
- Check whether the cost is part of employment supply or pure recruitment: that changes how the fee lands in the company records.
IR35 changes the commercial feel
Inside IR35 engagements deserve particular care. The fee-paying client has to treat the arrangement much more like employment, which often changes the economics of the engagement and can affect how the margin is understood in practice. That doesn't make the agency fee magically disappear. It just means the margin, tax handling and payroll treatment all start interacting in a way that directors should not try to wing.
My view is blunt. If you're running a limited company and you don't know whether the agency fee is deductible, VAT-bearing, or bundled into a payroll structure, you're guessing about profit. Guessing is expensive.
The Hidden Trap of Temp-to-Perm Transfer Fees
Temp-to-perm is where clients often get stung. The hiring manager thinks they have found the right person, the agency thinks it has protected its introduction, and the invoice turns into a row about what the contract allowed.
The issue is the protected period. If a temp is taken on permanently inside that window, the agency may charge a transfer fee, but only where the hiring agreement gave the client a proper choice to extend the assignment and the client did not use it, as shown in the GOV.UK transfer fee rules. If that extended-hire option was never offered, the agency has a much weaker position on transfer charges. That is the commercial reality, and it is why the paperwork matters before anyone starts talking about conversion.
Don't assume a break ends the issue
A lot of employers assume the clock resets as soon as the temp disappears for a while. It does not always work like that. If there are more than 42 days between assignments, the later assignment is treated as a new first assignment for the protected-period test, which is why the dates matter more than the office gossip.
The commercial mistake is simple. Teams stare at the hourly rate and forget the conversion cost. Then they move the temp into a permanent role and act surprised when the agency produces a fee that was sitting there from day one.
The safe move is dull but effective. Read the hire contract before the assignment starts, not after the team decides they want the person permanently.
A second trap appears when one agency introduces the worker and another agency finalises the hire during the protected period. The original introducing agency may still be able to claim a transfer fee if the extended hire option was offered, as noted in GOV.UK guidance on using an agency to find staff.
My recommendation is blunt. If you ever expect a temp to become permanent, negotiate the transfer wording up front. Do not rely on goodwill after the fact.
Negotiation Tactics That Actually Work on Agency Fees
The best negotiation starts with the right benchmark. If a permanent fee sits at the top of the 25% to 30% range, ask why that role deserves top-of-market pricing. If the agency wants a contract mark-up above 30%, ask them to break out what drives the number, because a higher rate should come with a clear commercial reason, not just a sales smile.
Start with structure, not with haggling.
- Ask for the fee basis: percentage of salary, hourly mark-up, or transfer charge.
- Push for a written waiver: if the role might convert, get the transfer fee position documented.
- Use volume or exclusivity carefully: agencies sometimes move on fee when they get certainty on instruction.
- Request a replacement or rebate term: if the hire fails, the commercial risk should not sit entirely with you.
- Insist on clarity for temporary roles: separate the agency margin from the worker's pay, employer costs and any payroll handling.
The question that changes the conversation
Don't ask, “Can you do better?”. That invites a vague concession. Ask, “What exactly am I paying for at this level, and what would you remove if I gave you exclusivity or a faster decision?”. That forces the consultant to defend the margin in commercial terms.
Permanent and temporary structures also justify different negotiations. A retained or exclusive search can sometimes support a cleaner conversation about fee certainty, while a standard contingency search should be easier to pressure if the candidate is common and the market is competitive. The point is not to squeeze every pound. The point is to stop paying premium money for standard service.
If the agency can't explain the fee in plain English, it probably isn't the right fee.
When to Bring in a Specialist Tax Adviser
Once agency structure starts affecting your director pay, IR35 position, VAT, and company profit extraction, it stops being a simple recruitment issue. That's the point where a proper review makes sense, because the wrong structure can lead to costs far exceeding the fee discussion itself.
For limited company directors, the trigger is usually complexity, not size alone. If the engagement uses a hybrid of agency margin, umbrella payroll, or inside IR35 treatment, the commercial stack deserves a personalised look. The same is true if the contract is long-running, the conversion path is unclear, or the fee is large enough to affect how you pay yourself during the year.
Treat the fee as one variable in the wider tax plan, not as an isolated annoyance. That's how you protect margin instead of just shaving pennies off procurement.
If you want a proper review of how agency fees, IR35, VAT and limited company pay interact in your own setup, visit Tax Compass and use it to sanity-check the commercial stack before you sign the next contract. It's the right move if you want fewer surprises and a clearer view of what the deal really leaves in your company.