How Does IR35 Apply to My Business? An Executive Guide to Compliance
Navigating the off-payroll working rules requires a clear understanding of your statutory obligations. For hiring organisations, getting IR35 wrong carries significant financial risk.
How does IR35 apply to my business?
IR35 applies to your business if you hire contractors through intermediaries and your business is classified as a medium or large organisation. Your business is responsible for determining tax status and paying any tax liabilities.
If your business fits this profile, you are legally required to assess the employment tax status of your off-payroll workforce. You should also issue a Status Determination Statement (SDS) for every contractor engaged via a limited company, sometimes referred to as a Personal Service Company (PSC). According to government statistics, the UK off-payroll working rules impact around 50,000 medium and large businesses across the UK.
Does IR35 apply to all companies?
No, the off-payroll IR35 rules do not apply to small companies that meet specific statutory exemptions.
The small company exemption is determined by criteria outlined in the Companies Act 2006. A private sector company is classified as small for off-payroll purposes. The rules for a small business are if it meets two or more of the following criteria:
- Annual turnover: Up to £15 million
- Balance sheet total: Up to £7.5 million
- Average number of employees: Up to 50
There is also the two-year rule in the Companies Act 2006 to consider, and the interplay of the company reporting period and tax years.
When an organisation qualifies as a small business, the legal responsibility for assessing IR35 status and paying the correct tax remains entirely with the contractor.
What does "taking reasonable care" mean for a hiring organisation?
Reasonable care involves conducting a diligent, individual assessment of a contractor's contract and working conditions (how the contract operates) rather than making generic or "blanket" determinations.
HMRC expects businesses to act as a prudent and reasonable business would. This means they cannot simply decide that all IT contractors are "inside IR35" to save time. You must look at the specific terms of the contract and the reality of the day-to-day relationship. Failing to take reasonable care means the purported Status Determination Statement (SDS) created isn’t actually an SDS, meaning that the business always remains liable for the unpaid tax and National Insurance that should have been deducted, as opposed to the liability being passed down the chain. Failing to exercise reasonable care is also careless, which means penalties could be applied.
What happens if my business gets an IR35 determination wrong?
An incorrect determination can lead to significant backdated tax bills, interest, and penalties from HMRC. Incorrect determinations across multiple engagements for multiple contractors can very quickly inflate those tax bills.
The financial consequences can be substantial. High-profile cases have shown the scale of the risk, such as the Natural Resources Wales public body being hit with a £14.6 million bill for IR35 failings. If HMRC challenges your "outside IR35" decisions, your organisation is usually the first port of call for the revenue. Beyond the direct financial hit, the administrative burden of an HMRC enquiry can disrupt your core operations for years.
On a more positive note, the bar for reasonable care is very low. You should do something rather than nothing, follow a documented process, and not draw conclusions on aspects of the working conditions that are contrary to the written terms, which take precedence over behaviours and subjective beliefs. If you do things right, which is not hard, HMRC should not cause you concern.
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If you need help with your IR35 processes, feel free to reach out. You can email us at info@ir35shield.co.uk or get in touch with an expert to find out how we can help.
