Umbrella Joint & Several Liability (JSL) Risk Checker
Cross-check your umbrella against HMRC's named tax avoidance schemes list, then score your exposure under the joint and several liability rules that commenced on 6 April 2026. For contractors, recruitment agencies and end clients.
JSL risk check
Who are you?
The JSL rules reach anyone in an umbrella company supply chain. Pick the role that matches your situation.
Which umbrella company?
Type the umbrella's name. We cross-check it as you type against a snapshot of HMRC's named tax avoidance schemes list — 182 named entities plus 7 linked trading names.
Snapshot as at —. Source: HMRC, Current list of named tax avoidance schemes, promoters, enablers and suppliers.
Red-flag check
Answer a few questions about your pay arrangement. We'll flag any patterns HMRC associates with non-compliant umbrellas.
Your JSL risk report
Based on your answers and the HMRC named-list check.
Findings
What to do next
Data accuracy. The HMRC named-list snapshot behind this tool is as at 11 May 2026 (source: HMRC's published list). HMRC adds entries at least monthly and usually more often, so anything named after that date will not appear here. Before relying on a clean result, confirm against HMRC's live published list.
No liability. ContractorUK provides this tool on an "as-is" basis for general information only. ContractorUK, its parent, contributors and authors accept no responsibility or liability for any loss, tax assessment, penalty, contractual dispute or other consequence arising from any use of, or reliance on, the information or output produced by this tool. You remain personally responsible for your own tax affairs and supply-chain due diligence. If in doubt, consult a qualified accountant, tax adviser or solicitor — and consider HMRC's Get Out of a Tax Avoidance Scheme guidance.
Joint and several liability for umbrella company supply chains is in force. It applies to payments made on or after 6 April 2026 — the first day of the 2026/27 tax year — under Chapter 11 of Part 2 ITEPA 2003 (sections 61Y to 61Z1), inserted by Finance Act 2026 section 24 and commenced by SI 2026/388.
Where a worker is employed by an umbrella company that does not pay over the PAYE and National Insurance due, HMRC can collect it from the relevant party in the labour supply chain instead:
- the agency closest to the end client in the chain; or
- the end client itself, where there is no such agency, where that agency is connected to the client within ITA 2007 s.993, or where the agency is not UK-resident.
What a compliant 2026/27 umbrella payslip should show: employer's National Insurance at 15% on pay above the £5,000-a-year secondary threshold, the 0.5% Apprenticeship Levy where the umbrella's pay bill exceeds £3m, the umbrella's margin, and holiday pay carved out of gross pay (commonly rolled up at 12.07%) rather than added on top. Deductions from gross pay are income tax, employee NIC at 8% between £12,570 and £50,270 and 2% above, employee pension and any student loan — never employer costs dressed up as worker deductions.
For payments made on or after 6 April 2026, HMRC can recover unpaid PAYE and NICs from another party in an umbrella company labour supply chain. The rules sit in Chapter 11 of Part 2 ITEPA 2003 (sections 61Y to 61Z1), inserted by Finance Act 2026 section 24, with SI 2026/388. The umbrella company still operates PAYE — JSL changes who HMRC can collect from if it does not pay over.
No. The umbrella company remains your employer and still operates PAYE, so income tax, employee National Insurance, employee pension and any student loan come off your gross pay exactly as before. JSL is a recovery power aimed at the parties above the umbrella; it changes nothing in the arithmetic of a compliant payslip.
The PAYE liability falls on the relevant party: the agency closest to the end client in the chain. Where there is no such agency, where that agency is connected to the client within ITA 2007 s.993, or where it is not UK-resident, the end client carries it instead. The worker still remains responsible for their own personal tax position.
To payments made on or after 6 April 2026, the first day of the 2026/27 tax year. They apply where a worker is employed by an umbrella company, or by a purported umbrella caught by the anti-avoidance provisions in ESM2440. They do not apply where the worker is treated as employed only by the agency rules, the off-payroll working (IR35) rules, the managed service company rules or the salaried-members rules.
No. HMRC has stated explicitly: "If a scheme is not on the list, this does not mean it works or has HMRC approval." This tool surfaces red flags and helps you investigate further. It is not a substitute for professional advice and not a statutory defence.
No. The legislation contains no reasonable-care or due-diligence defence, and in our Q&A with HMRC (Q13) HMRC confirmed: "There is no statutory defence if relevant parties have undertaken due diligence checks." Liability arises regardless. Identifying problems early still matters, because it gives you the chance to act before HMRC issues a determination.
A business that claims to operate as an umbrella but does not actually employ workers the way a genuine umbrella would. The legislation treats the worker as employed by such an entity anyway, so JSL still applies. This is designed to stop avoidance by re-structuring. Full guidance is in ESM2440.
Frequently, and unpredictably. HMRC publishes additions at least monthly and usually more often: the snapshot embedded in this tool averages about five new entries a month, and 19 entries were added in December 2025 alone. This tool uses a fixed snapshot, so check the as-at date at the top and click through to the live HMRC list before acting on a clean result.
HMRC publishes and maintains the full Current list of named tax avoidance schemes, promoters, enablers and suppliers on GOV.UK. This tool checks your specific umbrella against a snapshot of that list as you type.
Your umbrella name is compared in your browser against an embedded snapshot of HMRC's named tax avoidance schemes list — 182 named entities plus 7 linked trading names — matched exactly, by close spelling and by substring. You then answer a short questionnaire about red-flag patterns in the pay arrangement, and a risk score out of 100 and an action checklist are generated locally. No data is sent to any server.
- Q&A with HMRC on joint and several liability — Part 1 (ContractorUK)
- Q&A with HMRC on joint and several liability — Part 2 (ContractorUK)
- Current list of named tax avoidance schemes (GOV.UK)
- ESM2440: purported umbrella companies (HMRC manual)
- Working through an umbrella company (GOV.UK)
- Don't get caught out — tax avoidance (HMRC campaign)
- Find and update company information (Companies House)
- Umbrella take-home pay calculator · IR35 deemed payment calculator (ContractorUK)
This tool scores red-flag indicators only. It is not legal, tax or financial advice and is not a statutory defence under the joint and several liability rules. Verify against HMRC guidance, the live named list, or a qualified adviser.