Making Tax Digital for Income Tax is not just about sending quarterly updates. The foundation is digital recordkeeping: keeping your business income and expenses in software, with enough detail to support the updates sent to HMRC.

For sole traders, the risk is assuming that "digital" means a photo folder, a bank app, or a spreadsheet built in January. Under MTD, the recordkeeping routine needs to be more deliberate.

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 HMRC means by digital records

GOV.UK guidance for MTD for Income Tax says in-scope businesses and landlords must maintain digital records and send quarterly updates using compatible software. In plain English, the important business records need to live in a digital system, not only in paper notebooks or loose receipts.

Digital records are not just totals. They should preserve the underlying business transactions that make up those totals: sales, invoices, expenses, dates, categories, and supporting details.

What to record for income

For each invoice or sale, keep enough information that you can explain the income without digging through old messages.

  • Date: when the invoice was issued or the sale happened.
  • Customer: name and address where relevant.
  • Invoice number: unique and sequential where possible.
  • Description: what work was done, where, and any job reference.
  • Amount: net, VAT, and gross amounts if you are VAT-registered.
  • Payment status: unpaid, part-paid, paid, written off, or disputed.

If your business starts from quotes, keep the quote-to-invoice trail. Our quote vs invoice guide explains why those records should not be treated as the same thing.

What to record for expenses

For each business expense, record the transaction in a way that connects the payment to the business reason. A bank line alone often does not explain enough.

  1. Supplier: who you paid.
  2. Date and amount: matching the receipt or bank payment.
  3. Category: tools, materials, fuel, insurance, phone, subcontractor, software, or another sensible category.
  4. Receipt or invoice: stored digitally where possible.
  5. Business purpose: especially for mixed-use costs like phone, vehicle, or home office expenses.

Tradespeople should be especially careful with tools, materials, vehicle costs, and subcontractor payments. See our guide to sole trader expenses for tradespeople for examples.

Are receipts still needed?

Yes. MTD changes the format of recordkeeping, not the need for evidence. If HMRC asks about an expense, you need to show what it was, when it happened, and why it was business-related.

A good workflow is to photograph or upload receipts as soon as they arrive, then attach or associate them with the expense record. The receipt image is supporting evidence; the digital record is the structured entry in your accounting workflow.

Can spreadsheets count?

Spreadsheets may still be useful, especially for small businesses that already keep disciplined records. But for MTD submissions, the spreadsheet needs to fit into a compatible software process. That may mean bridging software or another HMRC-compatible tool.

The mistake is assuming that because a spreadsheet is on a computer, it automatically satisfies MTD. Check GOV.UK's MTD software guidance before relying on it.

A simple monthly record routine

If quarterly updates worry you, build a monthly routine first. It is easier and gives you time to fix gaps before the quarter ends.

  • Week 1: make sure every completed job has an invoice or clear sales record.
  • Week 2: match payments received to invoices.
  • Week 3: upload supplier receipts and categorise expenses.
  • Week 4: review unpaid invoices and chase anything overdue.

Where Wopa fits

Wopa is building WhatsApp-first workflows to turn job messages into cleaner invoice and record data: who the customer is, what work was done, how much is owed, when payment is due, and whether payment has arrived.

That helps with the part of MTD preparation many sole traders actually struggle with: capturing information at the moment work happens. Wopa is not currently HMRC-recognised MTD software and does not claim direct HMRC filing compatibility.

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.