Compliance
UK Employers & Tax Advisers: What’s Changing from April 2026 in Compliance Rules
England’s Finance Bill 2025-26 introduces major shifts in compliance: increased penalties, mandatory tax adviser registration, and new PAYE reporting for overseas workday relief—all effective spring 2026.
By NomadicTax Research Team • 5-8 min read • February 22, 2026
## What’s New in HMRC’s Regulatory Framework from April 6, 2026
**1. Mandatory Registration for Tax Advisers**
- All tax advisers interacting with HMRC on behalf of clients **must be registered** starting **May 2026**. This includes agents, consultancies, and those filing on behalf of others. ([gov.uk](https://www.gov.uk/government/publications/budget-2025-overview-of-tax-legislation-and-rates-ootlar/budget-2025-overview-of-tax-legislation-and-rates-ootlar?utm_source=openai))
- Registration ensures minimum competency, introduces oversight, and establishes penalties for misuse.
**2. Greater Penalties for Late Corporate Filings**
- Return due dates: From April 1, 2026
• Late corporate tax returns: penalty increased from **£100 to £200**
• Over three months late: **£400**
• Three successive failures: **£1,000**, increasing to **£2,000** if more than three months late. ([gov.uk](https://www.gov.uk/government/publications/budget-2025-overview-of-tax-legislation-and-rates-ootlar/budget-2025-overview-of-tax-legislation-and-rates-ootlar?utm_source=openai))
**3. PAYE Rules Updated for Overseas Workday Relief**
- From April 6, 2026, when employees are eligible for Overseas Workday Relief, employers submitting PAYE must now **limit excluded income to a max of 30%**—aligning with Relief financial limits. ([gov.uk](https://www.gov.uk/government/publications/budget-2025-overview-of-tax-legislation-and-rates-ootlar/budget-2025-overview-of-tax-legislation-and-rates-ootlar?utm_source=openai))
## Preparing as an Employer or Adviser
**Checklist:**
- Ensure adviser registration is in place. Apply early if not already registered.
- Review corporate tax deadlines; update internal schedules to avoid late filing penalties.
- Update payroll systems to enforce the 30% cap on income eligible for Overseas Workday Relief.
## Practical Scenarios
- **Scenario A:** An advisory firm handling multiple clients must register by May 2026. Unregistered agents risk inability to file and possible sanctions.
- **Scenario B:** A small company that is normally three weeks late in filing CT returns needs to avoid slipping into the “three failures” bracket, where penalties jump steeply.
- **Scenario C:** An employee working abroad who earns part UK-based income will now see only up to 30% of their PAYE income excluded under Overseas Workday Relief; tax calculations and payslips must reflect this.
## Actionable Advice for Compliance
- Update contracts with clients to reflect adviser registration status.
- Audit your historical late filings to assess past exposure and make corrections proactively.
- Train payroll teams before April 2026 to ensure systems are compliant.
## Why This Matters
These changes reflect a broader UK policy push for **fairness, transparency, and modernization**. Tax advisers are increasingly under formal regulation. Employers must adopt stricter payroll compliance to avoid rising penalties. The new rules are aimed at improving taxpayer trust and ensuring the system works efficiently.