Answers · UK 2025/26
Do I have to use Making Tax Digital for Income Tax as a sole trader?
Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) applies once your combined self-employment and property income passes set turnover thresholds. You must keep digital records and send quarterly updates to HMRC using compatible software, instead of one annual return. It is being phased in by income band.
Full answer
MTD for ITSA replaces the single annual self-assessment with digital record-keeping and quarterly updates submitted through HMRC-recognised software. It is mandated in phases based on your gross self-employment and property income (turnover, not profit), with the highest earners brought in first and lower bands following. What changes in practice: you must keep digital records of income and expenses, send four quarterly updates during the year, and finalise the year with a final declaration that replaces the old return. It does not change how much tax you owe or the payment dates; it changes how and how often you report. Worked example: a sole trader with GBP 95,000 turnover and GBP 60,000 taxable profit will report four quarterly summaries plus a year-end declaration. The tax itself is unchanged: after the GBP 12,570 Personal Allowance, GBP 37,700 is taxed at 20% (GBP 7,540) and GBP 9,730 at 40% (GBP 3,892), totalling GBP 11,432 income tax, plus Class 4 NI of GBP 2,262 at 6% on the basic band and GBP 194.60 at 2% above GBP 50,270. The reporting cadence is new; the GBP 11,432 plus GBP 2,456.60 liability is not. Check your turnover against the current mandation threshold and your phase-in date, because these determine exactly when you must join. Use the self-employed-tax calculator to estimate the liability you will be reporting, and confirm your start date and approved software at gov.uk.
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This answer is informational only and does not constitute financial, tax or legal advice. Figures are for the 2025/26 UK tax year. See our methodology and sources.