In short: The CITB levy is a statutory charge on employers who are wholly or mainly engaged in construction. It is calculated on your payroll plus payments to CIS subcontractors from whom you deduct tax. Businesses under £150,000 pay nothing, businesses between £150,000 and £499,999 get a fifty per cent reduction, and businesses at £500,000 and above pay in full with no relief whatsoever. Most large contractors do not overpay because they are careless. They overpay because the return itself contains traps that payroll software will never flag.
Every spring, thousands of construction businesses open a Levy Assessment Notice, glance at the total, note that it looks roughly like last year plus a bit, and pay it.
For a firm with a wage bill in the hundreds of thousands, that is an expensive habit. For a firm with a wage bill in the millions, it is a serious one.
The CITB levy is one of the very few charges on a construction business that is calculated from a form your own team fills in by hand, using figures pulled from two different systems, with no automated cross check and no HMRC style correction mechanism behind it. If the numbers going in are wrong, the assessment coming out is wrong, and it stays wrong until somebody notices.
We work with construction businesses across the UK, and this is one of the areas where we most often find money sitting on the table. Not through anything aggressive. Simply through the return being completed accurately.
The CITB levy is a statutory charge, not a voluntary industry subscription. It is imposed under the Industrial Training Act 1982 and given effect each period by a Levy Order approved by Parliament. The Construction Industry Training Board collects it and redistributes it through grants, apprenticeship support and training funding.
The test for who falls within it is narrower than most people assume, and broader than most people expect once they read it properly. CITB can only register and assess employers who are wholly or mainly engaged in construction industry activities, meaning more than half of total employee time is spent on activities defined in Schedule 1 to the Industrial Training (Construction Board) Order 1964, as amended in 1992.
Two things follow from that, and both matter enormously to larger groups.
First, "employer" is wide. It captures any business with PAYE employees, including working directors of a limited company, and any business engaging subcontractors under contracts for services. A holding structure with a small head office payroll can still be in scope.
Second, the fifty per cent test is applied to activities, not to turnover or to how you describe yourself. A business that thinks of itself as a property developer, a plant hire operator or a manufacturer may still be inside scope. Equally, a business paying levy for years may be outside it and have never challenged the position.
The levy applies in England, Scotland and Wales. Northern Ireland operates under a separate board with its own order, its own rate and its own threshold, which is a live issue for any firm delivering work across the Irish Sea.
The levy is calculated on your total wage bill, which for these purposes means two components added together.
The first is your payroll. The second is payments to Construction Industry Scheme subcontractors from whom you make CIS deductions.
The rates applied are 0.35 per cent on payroll and 1.25 per cent on net paid CIS. Those rates have been held steady across successive Levy Orders.
The relief structure is where the real decisions sit:
Read that last point again, because it is the one that catches growing firms.
The reduction is not a band. It does not work like income tax. If your total wage bill lands at £499,999 you pay half the calculated levy on the whole amount. If it lands at £500,001 you pay the full calculated levy on the whole amount. There is no marginal relief protecting the transition.
For a business scaling up through that zone, whether through a single large contract win, an acquisition or simply a busy year, the levy bill can more than double while the wage bill moves by a fraction of a per cent. Nobody sends you a warning. You find out in the spring.
Here is the second structural feature that catches large firms, and it is the one we spend the most time on with clients.
The levy you pay is calculated on historic pay data, not current pay data. The assessment you receive is built from a completed tax year that has already closed, and the payment falls due well over a year after the period it relates to.
For a business on a steady trajectory this is invisible. For a business that has just come off a peak, it is brutal. You can be paying full rate levy calculated on the year you were flat out, in a year when your order book has softened and your headcount has come down. The cost arrives precisely when the cash is not there.
The reverse is equally true and equally useful. A firm that has grown sharply already knows, today, what its levy exposure looks like for the assessment that has not yet been raised. That is a forecastable, plannable number, and almost nobody treats it as one.
This is where the depth is, and where the money usually is. The Levy Return is a paper exercise with boxes, and each box has rules that do not match how your payroll or CIS software categorises data.
The thirty per cent deduction trap. Your CIS levy base is derived from the tax you deducted, on an assumption that deduction was made at the standard twenty per cent rate. If you have deducted at the higher rate from any subcontractor, and you do not complete the specific box designed to capture that, the calculation assumes twenty per cent throughout and your assessment comes out higher than it should be. This is, in our experience, the single most common overpayment on the return, and it is entirely mechanical.
Payroll figures that include things they should not. The payroll box asks for gross taxable payments to employees and paid directors. It does not want employer National Insurance. It does not want employer pension contributions. It does not want dividends, and it does not want sole trader or partner drawings. Pull a headline payroll cost figure straight from your management accounts and you will very likely be declaring a number that includes employer on costs, which inflates the base.
Off payroll workers. Workers deemed employed for tax purposes under the off payroll rules belong in the payroll figure. Firms that run a mixed engagement model frequently either omit them or double count them against subcontractor figures.
Gross payment status subcontractors. The levy is not applied to CIS subcontractors from whom you make no deduction. Where a firm has a supply chain weighted towards gross status subcontractors, the levy base is materially different from total subcontractor spend. Declaring total subcontractor spend rather than the correct measure is an expensive mistake.
Establishment structures in groups. The levy is assessed by reference to construction establishments, meaning separate houses of business in a commercial sense. Departments, separate office locations, individual sites and yards are explicitly not establishments. Groups routinely get this wrong in both directions: some assume splitting operations reduces exposure when it does not, and others aggregate entities that should be considered separately, including entities that may not be in scope at all.
Directors who take no salary. A limited company with directors engaged in day to day activities is expected to include them in the payroll figure. Where directors take dividends only and the payroll figure is nil, that needs explaining on the return rather than leaving blank, or you invite a query and a delay.
None of these are exotic positions. They are the correct application of the rules. But they require somebody to actually read the return against your payroll data and your CIS300 filings line by line, which is not something that happens by accident in a busy finance function in the middle of the year end cycle.
Nothing dramatic on day one. That is exactly why it gets missed.
The consequences are staggered, and they escalate:
For a large employer, the grant eligibility point is the sharp end. You do not get a rebate for having paid levy. You get access to funding you then have to claim. Lose eligibility and you have paid a five or six figure charge into a system you can no longer draw from that year.
There is also a verification regime. The return declaration is signed by a director or company secretary, confirming the information is correct and complete and that supporting records will be retained for verification purposes. CITB checks returns and can request payroll records and contractor returns. A signed declaration backed by figures nobody has reconciled is a governance exposure, not just a tax one.
Yes, and the route is more accessible than most finance directors realise.
There are two distinct challenges, and confusing them wastes time.
If you dispute whether you should be registered at all, because you do not believe your business is wholly or mainly engaged in construction activities, that is a registration review. You can request one at any point. You do not need to wait for an assessment. CITB provides this free of charge, which is worth knowing, because there is a cottage industry of third parties charging fees for it.
If you dispute the assessment itself, there is a formal statutory appeal to an Employment Tribunal. Not the First Tier Tribunal, which is where most tax disputes go. The Employment Tribunal.
The mechanics matter:
That one month window is unforgiving, and it starts running from the notice date, not from the date somebody in your finance team opens the envelope. An informal challenge to CITB can be made first, and an extension of time can be requested, but neither pauses the clock automatically.
No, and large construction employers pay both.
They are separate charges, under separate legislation, collected by separate bodies, calculated on different bases, accessed through different systems. The apprenticeship levy is a tax collected by HMRC through PAYE, charged at 0.5 per cent of the annual pay bill with an annual allowance that means it only bites above a pay bill of three million pounds. The CITB levy is a statutory industry levy collected by CITB, charged on payroll plus net paid CIS, with the thresholds set out above.
For a contractor with a substantial directly employed workforce, both apply simultaneously, and the funds sit in two different places with two different sets of rules about what you can spend them on and how quickly they expire.
We regularly meet businesses paying both, drawing meaningfully from neither, and treating the combined cost as a fixed overhead. It is not a fixed overhead. It is a training budget you have already paid for.
This is a live compliance risk and the position has hardened considerably.
CITB's position is unambiguous: it is the only body authorised to impose and collect the levy, main contractors are not authorised to deduct money from workers' wages or from net paid CIS subcontractors on its behalf, and liability for the levy remains with the establishment assessed. CITB now operates an anonymous reporting mechanism specifically so that subcontractors can report contractors making these deductions.
There is a separate and much older point in HMRC's guidance about how such recoveries are reflected on monthly CIS returns, which is sometimes cited as authority for the practice. It is not. It describes reporting mechanics where a recovery has happened. It does not confer a statutory power to make the deduction in the first place.
The distinction that actually matters commercially is between a deduction from a subcontractor's payment, which CITB objects to, and a contract rate that was negotiated on an informed basis. Those are very different things, and how your subcontract documentation and your payment notices are worded determines which one you are doing. If your standard terms currently reference a levy deduction, that wording is worth a look.
This is the question we are asked most often by firms with substantial headcount, and the honest answer is that the arithmetic has shifted against large employers recently.
Funding was restructured in 2026. Most short duration training moved out of the standard grants scheme and into Employer Networks. Attendance grants for long qualifications were withdrawn. Achievement grants for non apprentice qualifications were standardised onto a single flat rate. First aid training came out of scope. Level 7 qualifications were withdrawn for new starters, though Level 7 apprenticeships were not affected.
Most significantly for larger businesses: employers above the two hundred and fifty staff mark lost access to Employer Networks, and were moved to a separate Large Employer Fund with a capped annual allocation.
Set that cap against a levy bill calculated at full rate on a multi million pound wage bill and the gap is obvious. A large contractor can comfortably pay a levy assessment many times larger than the maximum it can now draw back through that route.
That does not make the levy avoidable. It is statutory. What it does make it is a cost that needs actively managing rather than passively absorbing, and it sharply increases the value of the routes that remain open. Apprenticeship grants were protected through the restructure and continue at existing rates. For a large employer, apprenticeship strategy is now the primary lever on levy recovery, and it is a lever that has to be pulled deliberately and early.
The whole structure is under review.
Government consulted during 2026 on merging CITB with its engineering construction counterpart into a single industry training board. The consultation closed in June, a decision is expected in the autumn, and if it proceeds a new body could be established as early as 2028, with a new Levy Order to follow. Industry response has been genuinely split, with major trade bodies declining to give unconditional support and calling for a broader reset of the model rather than a straight merger.
There is a second signal that has attracted far less attention and, for large firms, is arguably more consequential.
The 2026 Levy Return introduced a new section collecting data on payments to labour agencies, umbrella companies and CIS payroll providers, both inside and outside CIS. CITB has been explicit that these figures are collected for research purposes and do not affect the levy payable.
For now.
Any business that has built its labour model around agency and umbrella supply should read that section of the return as what it is: the evidence gathering stage that typically precedes a scope discussion. Government has also indicated it is seeking views on extending the range of employer activities within levy scope. If you want to understand your exposure to a widened base, the numbers you need are the ones you are already being asked to declare.
Construction is not a sector we service. It is one of our largest, and it has been since the beginning.
We support around fifteen hundred limited companies across the UK, and construction is one of our deepest verticals: main contractors, housebuilders, civils, groundworks, roofing, brickwork, mechanical and electrical, fit out and specialist trades. That depth is why we see the levy problems that a general practice never encounters, because a general practice sees one or two of these returns a year and we see them constantly.
What that looks like in practice:
We are technology led, which in this context means your payroll, CIS and management information are reconciled continuously rather than in a panic each spring. The levy stops being an annual surprise and becomes a number you already knew.
If your wage bill is anywhere near the £500,000 threshold, or comfortably past it, the levy is worth a proper conversation rather than an annual signature.
Pulse Accountants and Tax Advisers work with construction businesses throughout the UK, from our headquarters in Newton Aycliffe, County Durham, and our offices in Newcastle and London.
Get in touch for a review of your levy position.
What is the CITB levy?
The CITB levy is a statutory charge on employers wholly or mainly engaged in construction industry activities in England, Scotland and Wales. It is imposed under the Industrial Training Act 1982 through a Levy Order approved by Parliament, and collected by the Construction Industry Training Board to fund training, apprenticeships and grants across the industry. It is a legal obligation, not an industry membership fee.
Is there a £600,000 CITB levy threshold?
No. There is no £600,000 threshold anywhere in the CITB levy rules. The figure appears in some widely shared online articles as a worked example of a payroll figure, not as a threshold, and it is frequently misread. The thresholds that actually exist are £150,000, below which no levy is payable, and £499,999, above which the fifty per cent small business reduction no longer applies. A business with a wage bill of £600,000 is already paying the full levy with no relief.
At what point do you start paying the full CITB levy?
At a total wage bill of £500,000. Below £150,000 no levy is payable. Between £150,000 and £499,999 a fifty per cent reduction applies automatically. At £500,000 and above the full levy applies to the entire wage bill, with no taper and no marginal relief. Crossing the threshold by a small amount can therefore roughly double the charge.
How is the CITB levy calculated?
It is calculated on your total wage bill, being payroll plus payments to CIS subcontractors from whom you make CIS deductions. The rates are 0.35 per cent on payroll and 1.25 per cent on net paid CIS. Payments to CIS subcontractors from whom you make no deduction, meaning those with gross payment status, are outside the calculation.
Do you pay CITB levy on subcontractors?
Only on CIS subcontractors from whom you make a CIS deduction. Subcontractors paid gross are not included in the levy base. This means that two businesses with identical total subcontractor spend can have materially different levy bills depending on the composition of their supply chain, which is why declaring total subcontractor spend rather than the correct measure is a common and expensive error.
Do you still have to submit a CITB Levy Return if you owe nothing?
Yes. Submitting an annual Levy Return is a statutory requirement for every registered employer, including those below the exemption threshold and those that are dormant. Failing to file does not remove the obligation. It results in an estimated assessment and puts your grant eligibility at risk.
What happens if you file your CITB Levy Return late?
The consequences escalate. Missing the first deadline means grant claims are withheld until the return is received. Missing the later deadline means grant eligibility for that year is lost entirely. Failing to file before assessment takes place results in an estimated assessment based on historic data, which is often higher than a properly calculated figure and has to be unwound afterwards.
Can you appeal a CITB levy assessment?
Yes. If you dispute whether your business should be registered at all, you can request a levy registration review from CITB at any time, free of charge. If you dispute the assessment itself, there is a statutory right of appeal to an Employment Tribunal, which must be lodged within one month of the date of the Levy Assessment Notice. There is no fee, a lodged appeal suspends recovery action, and the burden of proof sits with the appellant.
Is the CITB levy the same as the apprenticeship levy?
No. They are entirely separate charges under separate legislation. The apprenticeship levy is a tax collected by HMRC through PAYE at 0.5 per cent of the annual pay bill, with an annual allowance meaning it applies above a pay bill of three million pounds. The CITB levy is a statutory industry levy collected by CITB on payroll plus net paid CIS. Large construction employers commonly pay both at the same time.
Is the CITB levy tax deductible?
Yes. HMRC guidance treats industrial training board levies as allowable trade expenses for a business carrying on a trade. Grants received from CITB are normally treated as trading receipts, except where a grant is earmarked for specific capital expenditure, in which case different treatment applies. The timing of when the charge is recognised in your accounts is worth planning, particularly for businesses approaching the full rate threshold.
Can a main contractor deduct the CITB levy from subcontractor payments?
CITB's position is that it is the only body authorised to impose and collect the levy, that main contractors are not authorised to make deductions on its behalf, and that liability remains with the assessed employer. CITB operates an anonymous reporting route for subcontractors affected by the practice. There is an important distinction between an unauthorised deduction from a payment and a rate negotiated on an informed basis, and subcontract wording determines which side of that line you fall on.
Do large construction companies still receive CITB grants?
Yes, but the routes available to larger employers changed in 2026. Employers above the two hundred and fifty staff mark lost access to Employer Networks and moved to a capped Large Employer Fund. Most short course grants left the standard grants scheme. Apprenticeship grants were protected and continue at existing rates, which makes apprenticeship planning the main practical lever for large employers seeking a return on their levy contribution.
Does the CITB levy apply in Northern Ireland?
The CITB levy covers England, Scotland and Wales. Northern Ireland operates under a separate training board with its own legislation, its own rate and its own exemption threshold. Businesses operating on both sides of the Irish Sea need to consider both regimes, which is a point that is frequently missed by firms expanding across the UK.
Which accountants specialise in the CITB levy and construction in the North East?
Pulse Accountants and Tax Advisers are construction specialists headquartered in Newton Aycliffe, County Durham, with offices in Newcastle and London. Construction is one of our largest sectors and we work with main contractors, housebuilders, civils firms and specialist trades across the North East, including Durham, Darlington, Teesside, Sunderland and Newcastle, on levy returns, assessments, appeals, CIS and wider tax planning.
Do you work with construction firms outside the North East and London?
Yes. We support construction businesses throughout the UK. Our offices in Newton Aycliffe, Newcastle and London give us a physical presence in both the North East and the capital, but our construction clients operate nationwide and our systems are built to support them wherever they are based. The levy position is identical across England, Scotland and Wales, so location is no barrier to getting it right.