What’s Changing on 6 April 2026
Several tax compliance obligations in the UK will shift on 6 April 2026, including updates to PAYE codes, personal allowances, and labour supply chain liability under umbrella companies. (gov.uk)
Personal Allowance & Tax Codes
- Personal Allowance for 2026–27 remains at £12,570. (gov.uk)
- Employers should use correct tax codes in payroll records; prefix letters (e.g., ‘S’, ‘C’) must be included. (gov.uk)
- If an employee leaves before 6 April, no code changes need to be made immediately; but where a P9(T) or other updated notice is received, that should be used instead. (gov.uk)
Umbrella Companies & Labour Supply Chains
- From 6 April 2026, employing organisations, end clients, and agencies are responsible for ensuring PAYE, student loans, and NIC calculations are correctly deducted by umbrella companies. (gov.uk)
- If the umbrella fails, tax authorities may recover unpaid taxes from any party in the supply chain. Note: this expands liability outside just the umbrella employers. (gov.uk)
Implications & Risks
- Payroll risk: incorrect tax codes or delayed updates may lead to under-collection or over-collection of tax.
- Legal exposure: agencies and end clients could face claims if they fail to ensure compliance via umbrella structures.
- Employee confusion: changes around tax codes and liabilities may cause uncertainty for staff, increasing dispute potential.
Compliance Roadmap
| What | Who Needs to Do It | When to Start |
|---|---|---|
| Update payroll systems with new codes, allowances | Employers, payroll departments | Before processing pay on/after 6 April 2026 |
| Training on umbrella company rules | Agencies & end clients | Now—the changes take effect 6 April 2026 |
| Communicate with affected employees | HR departments | Q4 2025–early 2026 |
| Review contractor arrangements that use umbrella companies | Businesses & contractors | Ongoing, before April 2026 |
Example Scenarios
- A construction firm that uses umbrella companies for subcontractors must verify the umbrella company is deducting correct tax and NIC. If not, the principal may be held accountable.
- Payroll software providers will need to ensure any updates to tax codes and thresholds are integrated so employers aren’t using obsolete or incorrect tax code data.
Actionable Advice
- Audit existing contracts involving umbrella companies—ensure the flow of obligations is clearly defined.
- Update payroll policies—include code prefixes, correct thresholds, default codes for leaving employees, etc.
- Train HR/payroll staff on new liability risks and changes to code management.
- Engage with advisers if managing hybrid employment arrangements, or complex supply-chain labour models.
Bottom line: Don’t wait until April 2026. Prepare now: update payroll systems, communicate with stakeholders, and ensure everyone understands new liabilities, especially with umbrella companies. Efficient compliance now reduces risks and enhances trust.