From April 2026, Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) will transform how self-employed individuals submit their tax returns. HM Revenue & Customs (HMRC) estimates that over 4 million self-employed people and landlords will need to comply, marking the biggest change to UK income tax reporting in decades.
| MTD for ITSA Key Figures (2026/26) | Details |
|---|---|
| Mandatory start date | 6 April 2026 |
| Threshold for mandatory MTD | £10,000 annual income from self-employment or property |
| Quarterly updates | 4 reports per tax year |
| Final declaration deadline | 31 January following the tax year |
| Penalties for non-compliance | Fines starting from £100, escalating with continued failure |
Who Needs to Join MTD for ITSA?
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Use Free Tax Calculator →MTD for Income Tax Self Assessment applies primarily to self-employed individuals and landlords whose income from self-employment or property rental exceeds £10,000 per year. This threshold applies separately to each source of income, so if your self-employment income is £9,000 but your rental income is £11,000, you must comply.
The rule affects sole traders, partnerships, and landlords but does not currently apply to limited companies, which report corporation tax digitally under different rules.
If your income is below the £10,000 threshold, you are not required to join MTD for ITSA but can opt in voluntarily to benefit from the streamlined digital reporting process.
Understanding Quarterly Reporting Requirements
One of the biggest changes under MTD for ITSA is the requirement to submit quarterly updates to HMRC rather than just one annual tax return. These updates provide HMRC with a more timely snapshot of your income and expenses.
Each quarterly update covers a three-month period and must include:
- Total income received
- Allowable business expenses
- Capital allowances claimed
- Payments on account made
This system aims to reduce errors and help taxpayers manage their tax liabilities more efficiently.
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How to Prepare for MTD for ITSA
Preparing for MTD for ITSA well in advance can ease the transition and ensure compliance from day one. Here are some practical steps for self-employed individuals:
- Check your eligibility: Confirm if your income exceeds the £10,000 threshold.
- Choose compatible software: HMRC requires you to use approved digital tools that can connect to their systems for submitting quarterly updates. Many accounting packages now support MTD for ITSA.
- Digitise your records: Maintain digital records of your income and expenses, which simplifies quarterly reporting.
- Register for MTD for ITSA: Sign up with HMRC before the first deadline once you become eligible.
- Familiarise yourself with deadlines: Quarterly updates are due one month after each quarter ends, with a final declaration due by 31 January.
- Consider professional advice: Speak to an accountant or tax advisor to help navigate the changes.
Approved Software for MTD
HMRC provides a list of software providers that comply with MTD for ITSA requirements. Whether you prefer desktop applications or cloud-based solutions, many options are available that integrate bookkeeping, invoicing, and tax reporting.
Some popular MTD-compliant software includes QuickFile, FreeAgent, Xero, and Sage. Using approved software not only ensures compliance but can also save time and reduce errors.
Key Deadlines and Penalties
Understanding when to submit your quarterly updates and final declaration is crucial to avoid penalties. For the 2026/27 tax year onwards, the quarterly reporting periods are:
- 6 April – 5 July (due 5 August)
- 6 July – 5 October (due 5 November)
- 6 October – 5 January (due 5 February)
- 6 January – 5 April (due 5 May)
The final declaration, which replaces the traditional Self Assessment tax return, must be submitted by 31 January after the tax year ends, along with any balancing payment due.
Failure to comply with MTD deadlines may result in penalties starting at £100, increasing with continued non-compliance. HMRC’s penalty system is designed to encourage timely and accurate reporting.
Benefits of MTD for the Self-Employed
While MTD for ITSA introduces new obligations, it also offers benefits that can help self-employed people manage their tax affairs more efficiently:
- Better cash flow management: Quarterly updates help spread tax payments throughout the year, reducing surprises at tax time.
- Increased accuracy: Regular reporting reduces errors caused by last-minute rushes.
- Digital record keeping: Helps streamline bookkeeping and financial organisation.
- Improved tax planning: Real-time information allows for more effective financial decisions.
For more on tax planning for small businesses, see our Small Business Tax Planning Guide.
- MTD for ITSA becomes mandatory from April 2026 for self-employed and landlords earning over £10,000 annually.
- Quarterly updates replace the single annual tax return, with submissions due one month after each quarter.
- Use HMRC-approved digital software for record keeping and submissions.
- Penalties apply for missed deadlines, so register and prepare early.
- The new system offers better tax management and reduces year-end stress.
Who exactly must follow Making Tax Digital for Income Tax Self Assessment?
From April 2026, self-employed individuals and landlords with annual income over £10,000 from those sources must comply. This includes sole traders, partnerships, and property rental income but excludes limited companies.
Can I use spreadsheets or manual records for MTD for ITSA?
HMRC requires digital record-keeping with compatible software that can submit quarterly updates directly to HMRC. Simple spreadsheets alone are not sufficient unless they are integrated with software that meets MTD requirements.
What happens if I miss a quarterly update or final declaration deadline?
Missing deadlines can result in penalties starting at £100 and increasing for continued non-compliance. It’s important to register early and keep digital records to avoid fines and ensure smooth reporting.
Official Sources
* GOV.UK: Set up a business · * HMRC: Income Tax rates · * HMRC: Corporation Tax · * HMRC: VAT registration