Making Tax Digital for Income Tax is one of the biggest admin changes UK sole traders have faced in years. If you are in scope, you will need to keep business income and expense records digitally and send regular updates to HMRC through compatible software.

This guide is for sole traders: tradespeople, freelancers, contractors, mobile service businesses, and anyone self-employed under Self Assessment. It explains what changes, when it starts, and how to prepare without overcomplicating your bookkeeping.

Honest Wopa note. Wopa is building MTD-ready workflows around invoicing, receipts, and cleaner digital records. Wopa does not currently claim HMRC recognition, HMRC compatibility, or direct MTD filing. For submissions to HMRC, check GOV.UK guidance and HMRC's software finder.

What is Making Tax Digital for Income Tax?

Making Tax Digital, often shortened to MTD, is HMRC's programme for moving tax records and submissions into approved digital workflows. For Income Tax, the practical change is that in-scope sole traders and landlords must keep digital records and send quarterly updates of income and expenses to HMRC using software.

GOV.UK guidance describes MTD for Income Tax as a requirement to maintain digital records and update HMRC each quarter. The annual tax position is still finalised after the end of the tax year, but your bookkeeping can no longer be a pile of paper, a shoebox of receipts, or numbers reconstructed once a year from bank statements.

Who has to use MTD?

The rollout is based on qualifying income from self-employment and property. For a sole trader, the key number is your gross income from the relevant sources, not your profit after expenses.

  • From 6 April 2026: sole traders and landlords with qualifying income over £50,000.
  • From 6 April 2027: those with qualifying income over £30,000.
  • From 6 April 2028: those with qualifying income over £20,000, following the government's announced threshold reduction.

HMRC uses Self Assessment return data to decide who is in scope. If you have both sole trader income and rental income, the combined qualifying income can bring you into MTD even if each source on its own is below the threshold.

What changes for a sole trader?

The old rhythm for many sole traders was simple: earn money through the year, keep some receipts, then sort everything out near the Self Assessment deadline. MTD pushes the work into the year.

In practice, you need to do three things:

  1. Keep digital records of business income and expenses close to the time they happen.
  2. Send quarterly updates to HMRC using compatible software.
  3. Submit a final tax return after the tax year to finalise business income, other taxable income, allowances, and adjustments.

The quarterly updates are not the same as four full tax returns. They are periodic summaries based on your digital records. But they do mean your bookkeeping needs to be current enough to report during the year.

What counts as digital records?

Digital records are records held in software, not handwritten notes or loose paper. For a sole trader, that usually means invoices raised, money received, expenses paid, and enough detail to categorise the transaction correctly.

A practical digital record should include the date, amount, category, customer or supplier where relevant, and a short description. For invoices, that means keeping the invoice number, customer, date, line items, amount, VAT status if relevant, and payment status.

Spreadsheets may still be part of a setup if they are connected to MTD-compatible bridging software, but you should not assume any spreadsheet on its own is enough for HMRC submissions. Check GOV.UK before relying on a workflow.

Do you need accounting software?

If you are in scope, you need software that can meet the MTD rules for your submissions. HMRC publishes guidance and a software finder for products that work with Making Tax Digital for Income Tax. That list is the place to verify claims before you buy or commit.

For many sole traders, the best setup will be a combination: simple capture at the point of work, good invoice records, bank reconciliation, and MTD-compatible submission software. The important point is that your records connect cleanly enough that you are not rebuilding everything manually each quarter.

How to prepare now

You do not need to wait until you are legally in scope to improve your records. The simplest preparation is to make every job create a clean digital trail.

  • Invoice every job promptly. See our sole trader invoicing guide for what to include.
  • Number invoices consistently. Sequential invoice numbers make quarterly review easier.
  • Separate business and personal spending. A dedicated business bank account reduces bookkeeping noise.
  • Capture receipts as they happen. Do not wait until January to find missing supplier invoices.
  • Review monthly. A 20-minute monthly check is less painful than a quarterly rescue job.

Where WhatsApp fits

For many tradespeople and mobile sole traders, the job already starts and ends in WhatsApp: quotes, customer details, photos, addresses, job notes, and payment chasing. That makes WhatsApp a natural place to capture the raw information that later becomes a proper invoice and digital record.

Wopa's direction is to turn everyday WhatsApp job messages into structured invoice and record workflows: customer, job description, amount, due date, payment status, and reminders. That can support better bookkeeping habits before MTD applies to you.

But the distinction matters: Wopa can help create cleaner digital records and invoice workflows, while HMRC submissions must be made through software that is recognised as compatible for MTD for Income Tax.

Tax disclaimer. This article is general information for UK sole traders and is not tax advice. MTD rules include exceptions and detailed edge cases. Check GOV.UK or speak to an accountant before making filing decisions.