Last reviewed: 8 August 2026
Quick summary
- A new sole trade is not automatically in MTD on its first day. Current MTD timing depends on qualifying income and HMRC's rules for new income sources.
- Write down the genuine start date and keep the first contract, invoice, payment evidence and expense receipts. Those details matter later when an accountant checks the first return and MTD timing.
- If you join MTD during a tax year, HMRC says you must catch up digital records from the start of that year. Beginning a spreadsheet only on the day you sign up can leave a hole.
Part of Making Tax Digital by business type.
Direct answer
Do not assume mandatory MTD starts the moment you become self-employed. MTD for Income Tax has a staged timetable based on qualifying income, and HMRC has separate guidance for a new self-employment or property source. You still need to record the activity properly from the outset, register or report when required, and submit the tax return that covers the period before any MTD start date.
The trap is treating a part-year trade as though it began on 6 April or only when you finally open accounting software. Neither gives an accountant the evidence they need. If you start tutoring on 18 January, the job begins with the first genuine business activity and relevant records, not on the next tax-year boundary. Keep a concise start-date note backed by the invoice, platform signup, contract, first customer payment or purchase made specifically to begin the trade.
When you later become required to use MTD, software should show the whole tax-year position for each relevant business. HMRC's current guidance says that someone who signs up part-way through a tax year needs to catch up their digital record keeping from the beginning of that year. A modest weekly bookkeeping routine now is therefore a better investment than a rushed import later.
A first-invoice-to-MTD timeline
Week one: save the first engagement evidence, open a folder for the trade and decide how money will be received. If you use Stripe, PayPal, Etsy, Tutorful or another platform, download the payout report as well as retaining the bank payment. The report is what shows gross customer payments, platform fees, refunds and timing.
Each week or month: log income when it happens, capture receipts and mark anything that is personal, a refund, a deposit or an unresolved payment. A separate account is convenient but optional; the essential point is that a reader can identify the trade transactions and trace them back to original records.
After 5 April: total the income and expenses for that tax year, check the Self Assessment and notification position on GOV.UK, and keep the start-date evidence with the year-end pack. Do not confuse a return deadline with the date your trade began.
Before an MTD start: use the current GOV.UK checker, identify all self-employment and property sources, choose compatible software and ask whether the early records can be imported cleanly. MTD qualifying income is measured before expenses; a quiet profit does not automatically mean the income is irrelevant to the threshold.
How to evidence the start date without inventing one
Most new traders have a cluster of dates: they buy a domain, open a bank account, create a profile, advertise, sign a contract, invoice and receive cash. Do not pick the most convenient date after the fact. Make a short timeline that lists the actual steps and retain the documents. An accountant can then ask the right questions about when a trade was established and how the first period should be presented.
The distinction is useful when a person starts late in a year. A March invoice belongs in that tax year even though there may be only a few weeks of activity. A February business purchase may be relevant evidence, but it should be saved with its receipt and purpose. A client deposit, a cancelled booking or a platform payout that arrives after 5 April can all need an explanation rather than a guess based on the bank date.
Three new-trader situations that get muddled
- January online tutor: save the teaching-platform statement showing lessons, commission and payout, not merely the January bank credit. Record lesson income and the early software or materials costs in the same file.
- March weekend market trader: keep daily takings, card-terminal reports, stock purchases, cash bankings and a note of any stock still held. A short March period still needs records that make sense on their own.
- New freelancer with a PAYE job: put the employer payslips in a personal tax folder and freelance invoices in the trade folder. PAYE pay is not a substitute for keeping the separate trade record, and it is not MTD qualifying income.
These readers do not need a generic promise that software is easy. They need a low-effort process that leaves a trail for the first tax return, the MTD threshold review and any later accountant conversation.
First-year records to keep from the beginning
- The first contract, commission agreement, platform signup or client brief.
- First invoice, payment-platform report and bank receipt.
- Receipts for initial stock, tools, software, insurance, advertising and training.
- A simple income log that separates gross sales, fees, refunds, deposits and cash received.
- Monthly bank statements and card-processor reports.
- Mileage, travel or use-of-home notes where they are genuinely relevant.
- Any HMRC letter, Government Gateway record and previous tax-return information.
Name each file with a date and source. First client invoice - 18 Jan 2027 is useful evidence; scan 001 is not. The habit makes a new business look organised without creating an elaborate system it cannot maintain.
Common mistakes
Do not wait until the first return is due before asking what records you need. Do not treat every bank credit as sales without checking fees, refunds or customer deposits. Do not add personal costs to the business file simply because the new trade has not opened a separate account. And do not rely on a social-media launch date when the contract and first commercial activity tell a different story.
Another common mistake is to think MTD means tax becomes payable every quarter. Quarterly updates are summaries of income and expenses; check the current GOV.UK guidance for the tax return and payment timetable. Keep the practical tasks separate: recording transactions, filing the required return, paying tax and moving into MTD each have their own timing.
Questions to take to an accountant
- What date should I use as the start of this self-employment, and which documents support it?
- Do my first-year figures mean I need to register or file anything now?
- When could MTD apply to me, given this part-year start and my other property or self-employment income?
- What software or spreadsheet structure will make a later MTD migration painless?
- How should I record deposits, platform fees, refunds and costs paid before the first client payment?
- What should I put aside for tax while the business is new?
Useful related guides
Key takeaway
Starting late in a tax year does not make the first few months disposable. Establish the genuine start date, keep the original records, make a simple weekly log and check the current MTD timetable against total qualifying income. That gives you a credible first-year pack and removes the panic from any later software catch-up.
Official sources checked on 8 August 2026
Frequently asked questions
Do I join MTD as soon as I start self-employment?
No. Starting a trade does not by itself put you into mandatory MTD. Check the current GOV.UK guidance because timing depends on qualifying income and the rules for new income sources.
What if I sign up for MTD during a tax year?
HMRC says you need to catch up digital records from the start of that tax year, so retain the early invoices, payment reports and receipts.
Does my PAYE salary count towards the MTD threshold?
MTD qualifying income is based on self-employment and property income. Keep your PAYE documents for the annual tax picture, but do not mix them into the trade records.