From April 2026, HMRC’s new joint and several liability rules change how tax risk flows through the contractor supply chain. Here’s what agencies need to know and how moving away from umbrella models can reduce exposure.
From April 2026, the UK will introduce a new joint and several liability (JSL) regime designed to tackle non-compliance in the umbrella company market. The rules, set to appear in the Finance Bill 2025–26, will allow HMRC to recover unpaid PAYE and National Insurance directly from recruitment agencies or, in some cases, from the end client if an umbrella company fails to pass tax on correctly. The aim is straightforward, to shut down tax-avoidance schemes and eliminate long-running issues around holiday pay manipulation, disguised remuneration, and artificially inflated take-home pay models.
Under JSL, HMRC no longer needs to chase the umbrella first. If the agency is the business contracting with the end client, the agency becomes jointly and severally liable for the umbrella’s unpaid liabilities. If the client contracts directly with the umbrella, the client steps into that role. In both cases, HMRC is able to pursue either party for the full amount, regardless of who caused the error or who benefited from it. For many agencies, this removes a comfort they have relied on for years, the belief that responsibility ended the moment the contractor was handed to the umbrella.
This regulatory shift forces a rethink. Agencies will need to tighten due diligence, document their governance, and stop viewing umbrella referrals as a risk-free convenience. HMRC is making it clear that if an agency profits from a contractor supply chain, it must also take responsibility for ensuring that PAYE and NIC are processed correctly throughout that chain.
This is where outsourced and white-label payroll models take on new strategic importance. In these arrangements, there is no third-party umbrella acting as employer. The agency, or a group company, becomes the employer of record and operates its own PAYE scheme. The payroll provider manages calculations, submissions, payments, pensions and compliance as an agent, not as a separate employer. Because JSL only applies when an umbrella company is the employer, businesses using outsourced or white-label payroll sit outside the scope of the new legislation.
It’s important to be clear: stepping outside JSL does not remove all responsibility. HMRC repeatedly states that while payroll processes can be outsourced, legal responsibility cannot. The agency remains accountable for PAYE, NIC, statutory pay, holiday rights and employment obligations. What outsourced and white-label payroll do provide is a far more controlled environment: transparent records, consistent calculations, secure processes, and a complete break from the opaque corners of the umbrella market.
With JSL looming, many agencies are reviewing their contractor models. A common approach is emerging: identify where umbrellas are still used, migrate suitable workers onto an in-house PAYE model supported by outsourced or white-label payroll, and keep umbrellas only where essential but with far stronger oversight. Done well, this reduces exposure, increases compliance, and strengthens relationships with clients and workers.
This is exactly where Payroll in a Box steps in. Our Outsourced Payroll service gives agencies a fully managed PAYE engine, using our propriety software ensuring accurate payments, RTI submissions, pensions, holiday pay, HMRC compliance and cloud-based reporting for both employers and employees. Our White-Label Payroll solution delivers all that under your brand, giving you a compliant, revenue-generating platform without building internal infrastructure. With Payroll in a Box, agencies gain stability, transparency and control, while stepping cleanly away from the risks JSL brings in 2026.
If you are still relying on umbrellas for a significant part of your contractor base, now is the time to review your model. We can help you design and run an in-house PAYE structure, supported by outsourced or white-label payroll, that reduces your JSL exposure and strengthens your compliance position with clients and HMRC.
