The Social Security Contributions (Umbrella Companies) Regulations 2026 (SI 2026/388) take effect today, 6 April 2026, having been laid on 1 April. The instrument provides the National Insurance counterpart to the umbrella company regime legislated for Income Tax in Chapter 11 of ITEPA 2003, creating joint and several liability for contributions in labour supply chains that use umbrella companies. (statutoryinstruments.parliament.uk)
Scope is immediate for payroll made from the start of the 2026/27 tax year. HMRC guidance confirms the rules apply to money paid to workers on or after 6 April 2026 and that HMRC may recover underpaid payroll liabilities from parties other than the umbrella company. (gov.uk)
Joint and several liability arises where three conditions are met: a worker personally provides services to a client; the worker is employed by a third person that carries on a business of supplying labour and is not a company in which the worker has a material interest; and the umbrella company arrangements conditions are satisfied through the relevant contractual chain. Liability attaches to amounts due on a qualifying payment made in respect of that employment. These definitions mirror the Income Tax provisions now in Chapter 11 of ITEPA and are replicated here for National Insurance via the new Regulations. (gov.uk)
Identifying who is jointly liable follows the statute’s “relevant party” test. Where the umbrella contracts directly with the client, the client is jointly liable with the umbrella. Where intermediaries sit between the umbrella and client, the agency that holds the contract with the client to supply the worker is the relevant party. If that party is connected with the umbrella or is non‑UK resident, the client is treated as the relevant party; where both that party and the client are non‑UK resident, the closest UK‑resident entity in the chain becomes the relevant party. (gov.uk)
HMRC’s internal manual sets out the cross‑border application: if a worker is placed with a UK client by or through a non‑UK resident agency, the client is jointly and severally liable alongside the umbrella; where both the agency and the employer they contract with are non‑UK resident and others are in the chain, the UK agency closest to the client carries liability. This ensures a UK‑based recovery point for HMRC. (gov.uk)
Anti‑avoidance provisions capture “purported umbrella companies”. HMRC explains three scenarios in which a business is treated as such: where others in the chain would reasonably assume it is the employer when it is not; where workers are supplied directly in a way that would otherwise trigger the agency legislation; and where the worker has a material interest and others would reasonably expect most receipts to be paid as earnings but that does not occur. (gov.uk)
When a purported umbrella is in play, the worker is deemed employed by that entity for tax purposes and “relevant remuneration” connected with the services is treated as employment earnings; joint and several liability then applies to that remuneration. Where more than one purported umbrella exists, the one closest to the worker within PAYE scope is used; where an umbrella and a purported umbrella both exist, the umbrella is treated as making the payment. The deemed‑employment rules in Chapters 7–10 ITEPA and the LLP salaried member rules do not apply in these circumstances. (gov.uk)
The Regulations also address reliance on documents. In parallel with ITEPA section 61V(4A), the change disapplies the “fraudulent documentation condition” where a forged or misleading document purports to show that the umbrella regime applies; parties cannot avoid liability by relying on fraudulent evidence. HMRC’s manuals describe the fraudulent documentation condition in the off‑payroll context. (gov.uk)
For agencies and end‑clients, the practical effect is clear. HMRC can recover underpaid payroll liabilities from the relevant party where an umbrella fails to pay in full and on time. Agencies with a contract to supply the worker to the client should expect HMRC to look to them first; clients are in scope where they contract directly or where the intermediary conditions set out in legislation are met. (gov.uk)
Umbrella companies remain the employer responsible for operating PAYE and paying HMRC on time. They must also provide agencies or clients with sufficient information to check that PAYE and NICs are being operated correctly; HMRC makes this explicit in its guidance. From today, however, counterparties higher up the chain carry legal exposure if the umbrella fails to comply. (gov.uk)
HMRC’s policy paper frames the measure as targeted compliance reform: making the party with real influence over supply chains responsible for ensuring correct operation of PAYE and Class 1 NICs, with NIC powers delivered via these Regulations. The operative date is 6 April 2026 and the intent is to protect workers and remove incentives for non‑compliant operators. (gov.uk)