Who Gets Enrolled and When
Making Tax Digital for Income Tax Self Assessment (MTD ITSA) reaches a critical milestone in September 2026. HMRC now begins automatic signup of eligible sole traders and landlords estimated at 294,000 taxpayers. This is the next mandatory expansion beyond the 436,000 already filing quarterly updates.
From 2026/27 onwards, enrolled taxpayers must submit quarterly income and tax position updates to HMRC using compatible digital systems. There are no more penalty waivers for late submissions after this first year of the scheme. Contractors and business owners must comply or face penalties.
Why This Matters to Contractors and Sole Traders
MTD ITSA is now mandatory for most self-employed professionals: sole traders with turnover above 10,000 pounds, directors of close companies, landlords with lettings income above 10,000 pounds. Contractors in particular must ensure their payroll or accounting software connects directly to HMRC via the MTD API. Manual filing through HMRC online portal is no longer an option once enrolled.
The shift to quarterly reporting changes cash flow management. Interim tax submissions reveal your profit position to HMRC four times yearly instead of once. This can expose inconsistencies earlier, though revised figures are allowed up to the final return deadline (31 January).
What to Do Now
Contractors and sole traders should check their HMRC account regularly for enrollment notification. When notified, you have 60 days to activate MTD before mandatory filing applies. Ensure your bookkeeping software is MTD-compliant. Xero, QuickBooks, FreeAgent, and Sage all support direct MTD submission. If your current system does not, plan a migration before enrollment. Allow two months for setup and testing. Finally, work with your tax advisor to understand the quarterly reporting cycle and plan for payment-on-account adjustments at the September 2026 tax year-end.