What IR35 Means for Transport and Logistics Businesses
IR35 is the shorthand for the UK's off-payroll working rules, and it catches out transport and logistics businesses more often than most sectors. If you engage drivers, warehouse operatives, or other logistics workers through personal service companies (PSCs) or agencies, you need to understand these rules. Since April 2021, the responsibility for determining whether IR35 applies has sat with the end client, not the worker. For medium and large transport businesses, that means you.
The core question IR35 asks is simple: if the worker were engaged directly rather than through their limited company, would they be an employee? If the answer is yes, the engagement falls inside IR35 and you must deduct income tax and National Insurance contributions at source, just as you would for a permanent employee. The worker's limited company structure does not change their tax obligations if the underlying relationship is one of employment.
Why Transport Is a High-Risk Sector for IR35
HMRC considers transport and logistics a priority sector for IR35 compliance checks, and for good reason. The industry relies heavily on workers engaged through intermediaries: owner-drivers operating through limited companies, agency drivers supplied for ongoing assignments, and subcontractors engaged on what are labelled as self-employed terms.
Many of these arrangements look like employment in practice. A driver who works set routes, uses your vehicle, wears your branding, reports to your depot at fixed times, and cannot send a substitute is almost certainly inside IR35, regardless of the contract wording. The same applies to warehouse operatives and distribution staff engaged through PSCs who work alongside your permanent team under the same supervision.
Our guide to employee vs contractor status covers the broader principles, but transport has specific features that make IR35 assessments more complex.
The Key Tests
Employment status for IR35 purposes is assessed against three main tests:
- Personal service: Can the worker send a genuine substitute to do the work, or must they perform it personally? Most transport contracts require the named individual to turn up. A theoretical right of substitution written into a contract but never exercised in practice will not convince HMRC or a tribunal
- Mutuality of obligation: Is there an obligation on you to offer work, and on the worker to accept it? Regular ongoing assignments with expected hours strongly suggest mutuality, even if each shift is technically a separate engagement
- Control: Do you dictate when, where, and how the work is done? In transport, control indicators include set routes, fixed start times, required use of your vehicle and systems, and reporting to a depot manager
If all three point towards employment, the engagement is inside IR35.
The April 2021 Changes: Your Responsibilities
Before April 2021, workers operating through PSCs were responsible for assessing their own IR35 status. The off-payroll working reforms shifted that responsibility to the end client for medium and large businesses (those meeting two of: annual turnover above £10.2 million, balance sheet above £5.1 million, more than 50 employees).
If your transport business meets these thresholds, you must:
- Assess each engagement to determine whether IR35 applies
- Issue a Status Determination Statement (SDS) to the worker and any agency in the supply chain, setting out your conclusion and the reasons for it
- Take reasonable care in making the determination. HMRC expects you to consider the specific facts of each engagement, not apply blanket assessments
- Respond to disagreements through a status disagreement process if the worker challenges your determination
If you are a small business (below the thresholds), the responsibility remains with the worker's PSC. However, HMRC may still investigate arrangements that appear to be disguised employment, so getting the relationship right matters regardless of your size.
The Fee-Payer Rules
The entity that pays the worker's PSC is responsible for deducting tax and NICs if the engagement is inside IR35. In many transport supply chains, that entity is the agency rather than the end client. But the end client retains responsibility for making the status determination and issuing the SDS. If you fail to issue an SDS, HMRC can treat you as the deemed employer and hold you liable for the tax.
This creates a practical issue in logistics, where supply chains can involve multiple agencies. You need clear processes to ensure every PSC engagement has a valid SDS, and that the correct party is operating PAYE.
Using HMRC's CEST Tool
HMRC's Check Employment Status for Tax (CEST) tool is the official way to assess IR35 status. It asks a series of questions about the engagement and produces a determination: inside IR35, outside IR35, or unable to determine.
CEST is free and HMRC will stand by its results, provided you answer the questions accurately and the facts do not change. However, it has limitations:
- It does not consider mutuality of obligation, which is one of the three key tests
- The questions can be ambiguous, particularly around substitution rights
- It requires honest answers based on the reality of the arrangement, not what the contract says
For straightforward cases, CEST is a reasonable starting point. For more complex arrangements, particularly those involving owner-drivers with their own vehicles, genuine substitution rights, or multiple clients, you may need professional advice to support your determination.
What Happens If You Get It Wrong
The financial consequences of IR35 non-compliance are significant:
- Back-dated tax and NICs: HMRC can assess unpaid tax going back up to six years (or 20 years in cases of deliberate non-compliance). For a single driver engagement, this can run into tens of thousands of pounds
- Penalties: Up to 100% of the unpaid tax, depending on whether HMRC considers the error careless or deliberate
- Interest: Charged on all outstanding amounts from the date they were originally due
- Transfer of debt: If the fee-payer (usually the agency) cannot pay, HMRC can transfer the debt up the supply chain to the end client
Beyond the financial risk, HMRC compliance checks are disruptive. They typically review multiple engagements at once, and if one arrangement is found to be non-compliant, every similar engagement in your business will come under scrutiny.
There are also employment law implications. A worker found to be inside IR35 may also have a claim for employment rights they were denied, including holiday pay, sick pay, pension auto-enrolment, and protection against unfair dismissal. These claims are separate from the tax position and can add considerably to the total cost.
IR35 and Agency Workers in Logistics
Many transport businesses engage drivers through agencies rather than directly with PSCs. The IR35 rules still apply. If the agency supplies a worker operating through a limited company, you (as the end client) must determine whether that engagement falls inside IR35.
This interacts with the Agency Workers Regulations 2010. An agency driver who has been at your site for 12 weeks qualifies for equal treatment on pay and basic conditions, regardless of their IR35 status. And agency drivers are subject to drivers' hours and working time rules that limit the flexibility many businesses assume comes with using non-permanent staff.
The combination of IR35, AWR, and working time compliance means that engaging agency drivers through PSCs offers less cost advantage than many transport businesses assume, once you factor in the compliance burden and risk.
Owner-Drivers: Inside or Outside?
Owner-drivers who provide their own vehicle, hold their own operator's licence, have multiple clients, and genuinely control how they deliver the work are more likely to fall outside IR35. The key indicators are:
- They use their own vehicle, insured and maintained at their own cost
- They have a genuine right of substitution that is exercised in practice
- They have multiple clients and are not economically dependent on your business
- They control how and when they carry out the work, not just the route
- They carry their own financial risk (vehicle breakdowns, fuel costs, insurance)
However, many arrangements labelled as owner-driver subcontracting are, in reality, disguised employment. If the driver works exclusively for you, follows your schedule, uses your systems, and has no realistic ability to send a substitute, the arrangement is almost certainly inside IR35 regardless of vehicle ownership.
Traffic Commissioners and Self-Employed Drivers
IR35 is not just a tax issue in transport. The Traffic Commissioners, who regulate operator licensing in Great Britain, have taken an increasingly firm position against the use of self-employed drivers and "LTD drivers" operating through personal service companies.
The established regulatory view is that it is very rare for a commercial vehicle driver to be genuinely self-employed unless they are an owner-driver with their own operator's licence. The Upper Tribunal case of Bridgestep Limited confirmed this position, with the Traffic Commissioner revoking the operator's licence and declaring loss of repute for the Transport Manager where self-employed driver arrangements undermined effective fleet management.
In 2024, Traffic Commissioner Kevin Rooney's decision in Quick Road Transport Ltd went further, determining that engaging drivers through their own limited companies constituted unlawful lending of the operator's licence. The logic is straightforward: a driver operating through a limited company is a servant of that company, not of the operator. If the driver is not directly employed by the licence holder (or supplied by a genuine agency), the vehicle is being operated without proper authority. The operator's licence was revoked.
What This Means in Practice
The DVSA and Traffic Commissioners now actively assess whether an operator's driver engagement arrangements are compliant. Operators found to be using self-employed or LTD drivers face:
- Licence revocation, effectively shutting down your transport operation
- Loss of repute for Transport Managers, which can follow them to future roles
- Vehicle impoundment by the DVSA at the roadside
- Referral to HMRC for investigation of tax arrangements
The expectation from the Traffic Commissioners is clear: drivers should be directly engaged as employees or workers on the operator's books, or supplied as temporary workers through a bona fide agency that provides drivers to multiple operators. Any other arrangement will attract scrutiny.
This aligns directly with the IR35 position. If HMRC considers a driver to be a disguised employee for tax purposes, the Traffic Commissioner is likely to reach the same conclusion for licensing purposes. The two risks compound each other: a single investigation can trigger both a tax liability running into tens of thousands of pounds and the loss of the operator's licence your business depends on.
Practical Steps for Transport Businesses
Audit your current engagements. Identify every worker engaged through a PSC or intermediary. This includes agency-supplied PSC workers, owner-drivers operating through limited companies, and any other off-payroll arrangements
Assess each one individually. Use CEST as a starting point, but consider the full picture. Blanket determinations across all engagements will not satisfy HMRC's "reasonable care" requirement
Document your reasoning. For each Status Determination Statement, record the evidence you considered and why you reached your conclusion. This protects you if HMRC challenges your assessment
Review your contracts. Ensure written agreements reflect the genuine working arrangement. A contract that says "self-employed" while the worker operates as an employee will not withstand scrutiny
Talk to your agencies. Ensure your supply chain understands the IR35 process. Confirm who is responsible for PAYE deductions and how status determinations are communicated
Set up a disagreement process. Workers have the right to challenge your IR35 determination. You must respond within 45 days. Having a clear process in place avoids delays and demonstrates compliance
Get professional advice. IR35 assessments in transport are rarely straightforward. An HR health check can review your workforce structure and identify engagements that need attention before HMRC does
How Rebox HR Can Help
IR35 compliance sits at the intersection of employment law, tax, and workforce management. We work with transport and logistics businesses across the UK to review workforce structures, assess employment status, and put compliant arrangements in place. Whether you need a full audit of your off-payroll engagements or support with a specific HMRC enquiry, book a free consultation or call us on 01327 640070.
For more on the broader HR challenges facing transport businesses, including agency workers, TUPE, working time, and retention, see our dedicated guide.
