What’s Changing from April 6, 2026
Updated Tax Codes (P9X)
- Personal Allowance rises to £12,570 for all UK employees.(gov.uk)
- PAYE tax code emergency code becomes 1257L across the UK.
- Employers must prepare payroll for the new year starting 6 April 2026 using these updated codes. Keep P9(T) notices and ensure correct prefixes (e.g., “S” or “C”).(gov.uk)
Making Tax Digital (MTD) for Income Tax
- From 6 April 2026, self-employed and landlords with qualifying income over £50,000 must:
• Keep digital records.
• Use MTD-compatible software.
• Submit quarterly income/expense summaries to HMRC.(gov.uk) - The threshold drops to £30,000 from April 2027, then to £20,000 from April 2028.(gov.uk)
Actionable Insights for Employers & Businesses
Payroll Preparation
- Update all payroll systems ahead of April 6, 2026. Verify correct tax codes for all employees.
- Ensure employees with P9(T) or internet notifications are using the most recent code.
- Don’t reuse week 1/month 1 emergency code markings incorrectly.(gov.uk)
Software & Reporting Readiness
- If you're self-employed or a landlord with income over £50,000, research and invest in digital accounting software compatible with MTD.
- Start early: practice quarterly submissions in 2025 to avoid last-minute issues.
- Maintain clear digital records—receipts, invoices, statements—to support summaries.
Sample Compliance Checklist
| Task | Deadline | Responsibility |
|---|---|---|
| Update payroll tax codes in software | By 6 April 2026 | Payroll department / external payroll provider |
| Train employees on P9T & code changes | Before April run | HR / Operations |
| Sign up for MTD-Income Tax testing if eligible over income threshold | During 2025 | Self-employed / Landlords |
| Switch to compliant software & start quarterly recording | Before first return due after 6 April 2026 | Tax agents / Small businesses |
Why It Matters
- Using wrong codes or failing to adopt MTD when required can lead to under-withholding, penalties, or extra tax due.
- Digital records and software readiness can significantly reduce errors and improve efficiency.
- Better time management now avoids scramble during busy tax season.
Conclusion
HMRC’s upcoming Regulatory changes for 2026-27—new tax code threshold, updated personal allowances, and expanded Making Tax Digital requirements—are transforming Compliance and payroll norms. Getting software, payroll teams, and self-employed systems ready ahead of the deadlines isn’t optional—it’s essential. Start now, stay compliant, and avoid surprises.