Overview: What is MTD for Income Tax (ITSA)?
Making Tax Digital for Income Tax Self-Assessment (MTD for ITSA) reforms how sole traders and landlords report income and expenses. It’s being rolled out in phases:
| Phase start | Qualifying income threshold |
|---|---|
| 6 April 2026 | £50,000 from self-employment and/or property |
| 6 April 2027 | £30,000 |
| 6 April 2028 | £20,000 |
From the respective date, qualifying taxpayers must keep digital records, send quarterly updates, and file the final declaration via software. (gov.uk)
Key Compliance Steps
- Assess your qualifying income: Combined gross income from self-employment + property = qualifying income. Expenses, reliefs, salaries don’t count in threshold test. (makingtaxdigital.campaign.gov.uk)
- Choose HMRC-recognised software: Ensure it supports quarterly updates, digital record-keeping, deducts expenses, tracks allowable reliefs.
- Sign up & opt-in: HMRC will notify those exceeding thresholds, but you should proactively sign up.
- Record quarterly: Prepare periodic updates in fixed calendar quarters—keeping separate streams for business vs property income helps.
Penalties & Transitional Rules
- A new points-based late filing system applies for missed quarterly or annual deadlines. Accumulate points before financial penalties apply. (assets.publishing.service.gov.uk)
- During the first year for those mandated into MTD (from 2026 onwards), no penalty points for late quarterly updates. But you still must make them. (gov.uk)
- Self Assessment remains for final annual declaration; deadlines like 31 January continue, until integrated via final declaration through software. (makingtaxdigital.campaign.gov.uk)
Example Walkthrough
Ben, landlord, earns gross rental income of £55,000 per annum, no self-employment:
- Since his qualifying income > £50,000, from 6 April 2026 he must use MTD-ITSA: keep digital records, send quarterly updates.
- In first year, if he misses a quarterly update, he won’t get penalty points—but must catch up before next deadline.
- By 31 January 2027, he must send final declaration (for 2026-27) via his software.
- If his income next year drops below threshold (<£30,000), he must still continue until phase requirement kicks in (2027 or 2028 depending on cohort).
Actionable Tips
- Invest now in software compatibility; test it early.
- Keep records contemporaneously (don’t leave till annual return). Digital tools that sync bank accounts can help.
- Understand allowed property & business expenses ahead: repairs vs improvements, mortgage interest rules, etc.
- Plan cash flow: quarterly reporting means tax due may need different timing.
- If in first year and unsure, document your efforts—HMRC expects reasonable steps.
Why This Matters
MTD-ITSA is the largest change to Self Assessment in 30 years. It shifts burden from end-of-year cramming to steady, continuous record keeping. For many, this improves accuracy and control—but mis-compliance can lead to penalties and audit risk. Being ready is non-optional.