One Week Left: First MTD Income Tax Quarterly Update Due 7 August 2026

With the first Making Tax Digital (MTD) for Income Tax quarterly update due by 7 August 2026, UK sole traders and landlords in the opening mandate cohort now have roughly one week left. HMRC’s dedicated MTD agent update and GOV.UK guidance emphasise the same practical blockers: Agent Services Account authorisations, client sign-up, and linking compatible software before you can send.

If your total income from self-employment and property was over £50,000 on the 2024 to 2025 tax return, you are in scope for MTD for Income Tax in 2026 to 2027. The quarterly update is not a tax return — it is a short, software-generated summary of income and expense categories for the first update period — but it is a legal obligation for those mandated from 6 April 2026.

For most customers on standard update periods, the first quarter runs from 6 April 2026 to 5 July 2026. Customers on calendar update periods report 1 April to 30 June instead. In both cases HMRC’s published deadline is 7 August 2026.

Compatible software totals each income and expense category from the digital records you created in that period. You do not need to finalise accounting adjustments or compute the year-end tax figure before sending. After submission, many products show an estimated tax bill that builds through the year — useful for cash planning, not a substitute for Self Assessment.

HMRC’s agent update is clear that you cannot send a client’s quarterly update until you have added client authorisations to your Agent Services Account, signed the client up for MTD for Income Tax, and linked your chosen software to HMRC (including the identity check for fraud prevention).

If you are still choosing software, use HMRC’s software finder. Spreadsheets with bridging software can count as compatible where they meet HMRC’s rules. Digitally excluded customers and other exemptions remain available — check GOV.UK before assuming you are out of scope.

HMRC has said no penalty points will be issued for late quarterly updates during the first year of MTD for Income Tax (2026–27). Points-based penalties for missed quarterly deadlines start from the second year. Late Self Assessment returns and late tax payments still attract their usual penalties — the quarterly update does not replace the return due by 31 January 2027.

Reconcile April–June (or April–early July) bank feeds now. Separate business from personal spending, complete digital records for the period, and send a draft or live update early enough that connection errors are not discovered on 6 August.

Landlords should confirm that each property income source is correctly listed under MTD obligations. Sole traders with mixed employment and trading income should still focus the quarterly update on the self-employment and property sources HMRC has mandated — not every PAYE line.

FinnAccountings helps UK sole traders and landlords organise bank feeds, expenses, and tax prep drafts with Chartered Accountant insight before you or your ICAEW/ACCA adviser reviews figures for MTD software submission. Start a free trial to tighten your Q1 pack — we prepare drafts for review; we do not submit quarterly updates to HMRC on your behalf.

See our earlier two-weeks-to-go MTD briefing and the first quarterly deadline guide for cumulative rules and the threshold roadmap to April 2028. Pair those with the free tax calculator for high-level planning estimates only, and the MTD ITSA 2026 compliance checklist for a longer practice playbook.