Making Tax Digital for Sole Traders: What You Must Do If You Earn Over £50,000

Making Tax Digital for Income Tax Self-Assessment (MTD ITSA) is now live for the first wave of sole traders and landlords. Since April 2026, anyone with qualifying income over £50,000 for the 2024–25 tax year is legally required to use MTD-compatible software and submit quarterly updates to HMRC instead of a single annual Self Assessment return.

If you earn above this threshold and haven't switched yet, you are already non-compliant. Here's what you need to know — and what to do urgently.

What Making Tax Digital Actually Requires

MTD ITSA replaces the traditional annual Self Assessment return with a new system involving four quarterly digital updates and a final declaration at the year end. Specifically, you must:

Keep digital records of all your business income and expenses using HMRC-recognised MTD-compatible software. Spreadsheets alone are not sufficient unless combined with "bridging software" that converts them to the HMRC-compatible format.

Submit quarterly updates to HMRC, summarising income and expenses for each three-month period. These updates are not tax returns — you are not paying tax four times a year. They are cumulative summaries that help HMRC understand your in-year position.

Submit an End of Period Statement (EOPS) and a Final Declaration at the year end, which replaces the traditional Self Assessment return and crystallises your tax bill.

Who Is Affected and When

The roll-out is phased by income level:

• From April 2026: sole traders and landlords with qualifying income over £50,000 (2024–25 basis)
• From April 2027: those with qualifying income over £30,000
• From April 2028: those with qualifying income over £20,000

"Qualifying income" includes gross (before expenses) income from self-employment and/or property, even if you make a loss. If you have a main job and a side business, both count.

Partnerships and limited companies are not currently in scope, though HMRC has signalled partnership requirements will follow in future years.

Choosing Compatible Software

The most widely used MTD ITSA-compatible software in 2026 includes QuickBooks Self-Employed, FreeAgent, Xero, and Sage. Prices vary from free (FreeAgent is included with some business bank accounts, notably NatWest and Royal Bank of Scotland) to around £20–30 per month for full-featured plans.

HMRC's approved software list is the definitive reference. Do not use software not on this list — quarterly updates must be submitted in the prescribed HMRC API format and generic accounting tools cannot do this.

The Penalty Regime

From January 2026, HMRC introduced a new points-based penalty system for late MTD submissions. Each missed quarterly update earns a penalty point. Accumulate four points and you receive a £200 fixed penalty, plus further penalties for continued failure. This replaces the old flat £100 fine.

Why MTD Can Actually Help You

The quarterly cycle forces you to keep your bookkeeping current — which most self-employed people find beneficial even though it feels like extra work initially. Real-time reconciliation means you can estimate your tax bill throughout the year rather than facing a shock in January. Many software providers now offer built-in tax estimation dashboards.

Australia introduced Single Touch Payroll in 2018 and has seen employer compliance improve significantly as a result. The US IRS is moving toward more frequent digital reporting under its Direct File initiative, though the US system remains primarily annual.

Step-by-Step Checklist for Sole Traders

• Check if you're in scope: was your gross self-employment or property income over £50,000 in 2024–25?
• Check HMRC's MTD sign-up status: log in to your Self Assessment online account to see if HMRC has enrolled you automatically
• Choose and sign up for compatible software: see HMRC's approved list
• Migrate your existing records into the new software
• Submit any overdue quarterly updates — Q1 (April–June 2026) was due 5 August 2026; get your software connected before that date
• Set quarterly reminders: updates are due within one month of each quarter end (August, November, February, May)
• Speak to an accountant if you are unsure — ICAEW has a find-a-member tool

Key Numbers

• £50,000: income threshold for MTD ITSA from April 2026
• 4: quarterly updates required each tax year
• £200: fixed penalty for accumulating 4 late submission points
• £30,000: next income threshold, from April 2027

Sources

• Gov.uk: Making Tax Digital for Income Tax
• Gov.uk: Find MTD-compatible software
• Alexander & Co: Making Tax Digital 2026 guide
• HMRC: Penalties for late MTD submissions

Educational content only — not financial advice.