MTD for sole traders and side hustles: the £20,000 question
By the MTDFox team · Published
Making Tax Digital is usually discussed as a landlord problem — but the same rules capture sole traders: freelancers, tradespeople, consultants, delivery riders, Etsy and eBay sellers, and anyone else with self-employment income on their tax return. As the threshold falls to £20,000 in April 2028, MTD stops being a "big business" issue and reaches almost every serious side hustle in the UK.
The number that matters: qualifying income
Your qualifying income is your combined gross income from self-employment plus property, before any expenses. Three traps hide in that definition:
- It's turnover, not profit. A freelancer invoicing £24,000 with £6,000 of costs has £24,000 of qualifying income — over the 2028 line.
- Income streams combine. £14,000 from a trade plus £8,000 of rent = £22,000. Neither alone would qualify; together they do.
- Employment doesn't count. Your PAYE salary is ignored — MTD looks only at the self-employed and property side.
The timeline for the self-employed
| From | You're in if qualifying income is |
|---|---|
| April 2026 | over £50,000 — already in force |
| April 2027 | over £30,000 |
| April 2028 | £20,000 or more — the side-hustle wave |
What changes day-to-day
Instead of one January tax return, you keep digital records of every business income and expense, and send HMRC a summary four times a year through software, with a final declaration at year end (deadlines in our quarterly deadlines guide). Each trade and each property business reports separately — a plumber who also lets a flat sends updates for both.
Mixed income: where it gets messy
The £20k-£30k band is full of people with two or three small income streams — some freelance work, a lodger, a rental inherited from family. That mix is exactly what spreadsheets handle worst and what MTD software must handle well: separating trades from property, applying the right expense categories to each, and (for landlords) treating mortgage interest correctly under Section 24.
What to do now
- Add up last year's gross self-employment + property income. Over £20,000? You have a date with MTD by 2028 at the latest.
- Start keeping digital records a year early — your first mandatory quarter becomes a non-event instead of a scramble.
- Check whether you genuinely qualify for an exemption — most people don't.
Ready before the deadline?
MTDFox keeps your records in HMRC's exact quarterly format — 10 minutes a quarter, £4.99/month at launch.
Try the free betaOfficial sources
Keep reading
MTD for Income Tax: what landlords must do from April 2026
MTD quarterly deadlines explained (2026/27 dates)
Section 24: how the 20% mortgage interest credit really works
MTD exemptions: who doesn't have to comply, and how to apply
Landlord allowable expenses: what you can (and can't) claim
MTD for jointly-owned property: who reports what
How to choose MTD software: 7 questions to ask before you pay
This guide is general information, not tax advice. Rules current as of August 2026 — always check GOV.UK for the latest position.