What is Making Tax Digital for ITSA?
Making Tax Digital (MTD) is changing how self-employed people and landlords report their income and expenses. Unlike the old Self Assessment system, where you reported everything once a year, MTD requires keeping digital records throughout the year and sending updates to HMRC every three months.
How MTD Works
With MTD, your accounting software keeps track of all your income and expenses for each business or property automatically. Every three months, your software totals this information into a quarterly update, which is then sent to HMRC. The software does the calculations based on the information you have entered so good bookkeeping is essential.
At the end of the tax year, after your fourth quarterly update, your software will show a complete picture of your income and expenses. Before submitting your final tax return, you may need to:
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Remove items that aren’t allowed as business expenses (for example, personal costs you tried to claim).
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Include costs that belong to this year even if you’ve paid them in advance or will pay them later.
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Adjust your records if your accounting period doesn’t match the standard tax year (1 April to 31 March).
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Claim any reliefs or allowances you’re entitled to, like deductions for equipment you’ve bought or income from renting out a room.
Finally, you complete and submit your tax return digitally. You must send it by 31 January after the end of the tax year, though you can submit earlier if your records are ready. Sending it on time avoids late penalties and keeps your records correct.


