Making Tax Digital for Income Tax (MTD-IT) is HMRC’s biggest Self Assessment shake-up since the 1990s. The headline change: from April 2026, qualifying self-employed people and landlords must keep digital records, use compatible software, and submit five updates per tax year instead of one. The threshold is being phased in — £50,000 initially, dropping to £30,000 in 2027 and £20,000 in 2028.
This page exists because most coverage of MTD-IT gets two things wrong:
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It conflates gross income with profit. The £50k/£30k/£20k thresholds are gross qualifying income (sales/turnover), not profit. A £35k Etsy seller with £20k of legitimate business expenses still has £35k of qualifying income for MTD purposes — they’re mandated as soon as the threshold drops below their gross level. Thinking in profit terms can leave you blindsided.
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It treats £50,000 as a permanent threshold. It’s not. £50,000 is the first-year threshold for 2026/27 only. Then £30,000 from April 2027, £20,000 from April 2028. Every year more sellers get caught. The phased rollout is designed to ease HMRC’s processing burden, not your planning.
The calculator above checks both — your status this year and when the threshold drops will catch you.
What “qualifying income” includes
For MTD-IT thresholds, qualifying income = self-employment + UK property/rental income (gross). What’s included:
- Sales from Etsy, eBay, Vinted, Depop, Shopify, Amazon, etc.
- AdSense / YouTube partner programme income
- Patreon, OnlyFans, Substack, Ko-fi
- Streaming royalties (DistroKid, TuneCore, CD Baby payouts)
- Tutoring, coaching, freelance services
- Rental income from UK property (gross before expenses)
What’s not included:
- PAYE employment income
- Dividend income
- Savings/interest income
- Pension income
- Income from limited company directorship (different rules — out of scope here)
So a Vinted reseller doing £25,000 of gross sales while earning £45,000 PAYE has qualifying income of £25,000 — under the £30,000 2027 threshold but over the £20,000 2028 threshold. MTD will apply to the Vinted side from April 2028.
What MTD compliance actually involves
If you’re mandated, three things change:
1. Digital records mandatory. Every income and expense item must be in software (or in a spreadsheet linked via bridging software). Receipts can be paper, but the data must be digital. Pure paper bookkeeping is non-compliant.
2. Quarterly updates. Five submissions per tax year instead of one. Quarter-end deadlines are 5 August, 5 November, 5 February and 5 May (covering the four quarters of the standard tax year). Each is a summary of income and expenses for that quarter — not a full Self Assessment return.
3. Final declaration by 31 January. This replaces the existing Self Assessment return. You confirm your full-year figures, claim allowances, and submit. Functionally similar to the current return, but signed off after four quarterly updates rather than computed from scratch.
The five-deadline system is the most-disliked part of MTD for self-employed people. Many sellers hand quarterly updates off to a bookkeeper or accountant; others use software that auto-generates them from bank feeds.
Software requirements
HMRC publishes a recognised software list. As of April 2026 it includes:
- Free options for simple cases (rental-only, single-platform Etsy)
- Subscription products from £4-£30/month (FreeAgent, QuickBooks, Xero, Sage variants)
- Spreadsheet + bridging combinations (cheaper but more setup)
The link in the source above is HMRC’s full list. Don’t choose software based purely on price — accountant integration, multi-platform reconciliation, and ease of use matter more than £5/month.
What’s not changing
A lot. Your tax bands, personal allowance, trading allowance (£1,000), Class 4 NI, payment deadlines (31 January for the previous tax year, payments on account 31 January and 31 July) — all unchanged. MTD changes how you submit data, not what you owe. The side hustle tax calculator and trading allowance calculator work the same way before and after MTD applies to you.
The HMRC platform reporting rules (Vinted/Etsy/eBay sharing your data above £1,700/30 items) are also separate from MTD-IT. Both apply, but they’re independent obligations.