Making Tax Digital for Sole Traders: Full Guide

Making Tax Digital for Sole Traders

Making Tax Digital for sole traders is one of the biggest changes to self-employed record-keeping in a generation. If you run a business on your own - freelancer, tradesperson, consultant, shop owner - HMRC's Making Tax Digital for Income Tax Self Assessment (MTD ITSA) will eventually change how you keep records and report income, whether or not you feel ready for it. This guide explains what Making Tax Digital for sole traders actually requires, who it applies to right now, and how to prepare without handing over control of your books before you're ready.

The short version: you'll need to keep digital records and send quarterly updates to HMRC. What you won't need to do - not with WDI Billing, anyway - is let software file anything automatically. Our Prepare mode means you press file. Nothing streams to HMRC on its own.

What is Making Tax Digital for sole traders?

Making Tax Digital (MTD) is HMRC's programme to move tax reporting away from paper and spreadsheets and into digital, connected record-keeping. MTD for VAT has applied to VAT-registered businesses for several years. MTD for Income Tax Self Assessment - MTD ITSA - is the next phase, and it's aimed squarely at sole traders and landlords.

Under MTD ITSA, instead of filing one Self Assessment return a year, qualifying sole traders will need to:

  • Keep digital records of business income and expenses using MTD-compatible software
  • Send quarterly updates to HMRC summarising income and expenses
  • Submit an end-of-period statement (EOPS) for each business at the end of the tax year
  • Make a final declaration confirming total taxable income, replacing the traditional Self Assessment return

For a fuller walkthrough of the whole programme, see our pillar guide, what is Making Tax Digital, which covers MTD for VAT and MTD ITSA together.

Who does Making Tax Digital for sole traders apply to?

MTD ITSA is being phased in based on qualifying income - the total gross income from self-employment and property before expenses. HMRC has set thresholds that bring sole traders in gradually rather than all at once, starting with the highest earners: those with qualifying income above £50,000 must comply from 6 April 2026, tested against 2024/25 income; those above £30,000 follow from 6 April 2027, tested against 2025/26 income; and those above £20,000 join from 6 April 2028, tested against 2026/27 income.

If your qualifying income is above the threshold that applies to you, you'll be required to follow MTD ITSA from your applicable start date shown above. Each threshold is tested against a specific tax year's income, so it's worth checking your figures against the right year rather than your current one. Because the exact figures and dates matter for compliance, we've broken them down in detail in MTD qualifying income - check that guide for the numbers that apply to your situation before assuming you're in or out.

If your qualifying income sits below the threshold, you can currently continue with standard Self Assessment. That doesn't mean digital record-keeping isn't worth doing anyway - it usually saves time and reduces errors regardless of what HMRC mandates.

What sole traders actually need to do under MTD ITSA

Digital record-keeping

Every piece of business income and every allowable expense needs to be recorded digitally, in software, rather than reconstructed at year-end from a shoebox of receipts. This is where most sole traders feel the change most: it's less about the tax itself and more about the discipline of keeping records as you go. In practice, that means every invoice you raise, every business expense you pay, and every bank transaction tied to the business needs to sit in MTD-compatible software rather than a spreadsheet you update once a quarter - though a spreadsheet can still qualify if it's linked to bridging software, provided the digital link between the two isn't broken by manually retyping figures. Our expense tracker app makes this straightforward - scan or import receipts as they happen, and your records stay current without extra admin at year-end.

Quarterly updates

Instead of an annual return, you'll send HMRC a running summary of income and expenses four times a year. These are cumulative updates, not final tax calculations, and they don't carry the same all-or-nothing pressure as a full Self Assessment return. Each quarter runs from the 6th of one month to the 5th of the month three months later, and the update itself is due by the 7th of the following month - so the first quarter of the tax year, covering 6 April to 5 July, is due by 7 August. Our guide to MTD quarterly updates covers the deadlines and what each submission needs to contain.

End-of-period statement and final declaration

At the end of your accounting period, you'll finalise the figures for each business with an end-of-period statement, then confirm your total taxable income across all sources with a final declaration - the modern equivalent of submitting your Self Assessment return.

Prepare mode: staying in control of what gets sent to HMRC

A lot of sole traders hear "quarterly updates to HMRC" and picture software quietly reporting their income in the background without them seeing it first. That's not how MTD has to work, and it's not how WDI Billing works.

WDI Billing runs on three modes:

  • Records - your books, kept digitally, nothing sent anywhere
  • Prepare - our default mode. Your quarterly update is built and ready to review, but nothing goes to HMRC until you actively choose to send it
  • File - you press file. That's the only way anything reaches HMRC

This matters because Making Tax Digital for sole traders is a reporting obligation, not a licence for software to act on your behalf. Your books stay yours. You can review every quarterly update, correct anything that looks off, and only then submit it - with no per-invoice fees and no surprise charges for doing what you're required to do anyway.

Choosing MTD software as a sole trader

Not all "MTD compatible" software is built the same way. Some tools push you towards full automation because it's easier to build than genuine review-and-approve workflows. As a sole trader, look for software that:

  • Is recognised by HMRC for MTD ITSA submissions
  • Lets you see and approve a submission before it's sent, not just after
  • Handles receipt scanning and expense capture without forcing you to use AI features you don't want
  • Exports your data cleanly if you ever want to switch providers - no lock-in
  • Lets you grant an accountant access when you need a second pair of eyes, without giving up ownership of your data

Our dedicated page on Making Tax Digital software covers HMRC recognition and how Prepare mode works in more depth. If your business is self-employment specifically, our sole trader accounting software page walks through the features built around exactly this persona - income and expense tracking, mileage, and quarterly-update-ready records from day one.

What happens if you don't comply

Once MTD ITSA applies to you, missing quarterly updates or the final declaration can trigger a points-based penalty system, similar to the one already used for MTD VAT. Persistent late submission adds up points; once you cross a threshold, financial penalties follow. Because quarterly updates make you a quarterly filer for these purposes, your penalty point threshold is 4 points - each missed or late submission adds a point, and once you reach 4, a £200 penalty applies, with a further £200 for each subsequent late submission. Points below the threshold expire automatically after 24 months, but once you've hit the threshold, resetting your record needs a further run of on-time submissions as well as being up to date with your filing. We've covered the mechanics in detail in MTD penalties, including how the points system resets.

Getting started before your deadline arrives

The sole traders who find MTD ITSA painless are the ones who start digital record-keeping before their mandatory start date, not on it. Importing a year of existing records, getting comfortable with quarterly updates in Prepare mode, and only switching File mode on when you're ready gives you a dry run with no risk - your data doesn't leave your control until you decide it should.

If you're not sure whether you're already within scope, check the thresholds in MTD qualifying income first, then come back and set up your records.

Try WDI Billing free

WDI Billing was built for sole traders who want to meet Making Tax Digital requirements without giving up control of their own books. Records, Prepare, and File modes mean nothing reaches HMRC until you say so - and when you do need to file, it's one click, not a fee. Start your free trial and see how straightforward Making Tax Digital for sole traders can be when you stay in charge of it.