intajBooks for a UK sole trader, ready for Self Assessment.
Record what came in and what went out for the tax year, in the order it happened. Free, no sign-up, on your device.
What HMRC expects you to keep
If you work for yourself you register for Self Assessment and keep records of your sales and business costs for every tax year (6 April to 5 April). Most sole traders now use the cash basis: money counts when it comes in and goes out, which is exactly how Intaj Books records entries. Keep the records for at least five years after the 31 January filing deadline.
Making Tax Digital is coming
From April 2026, Making Tax Digital for Income Tax starts for sole traders and landlords above an income threshold, with quarterly updates sent through compatible software, and it widens to lower incomes in the following years. Intaj Books is not MTD software and sends nothing to HMRC: use it as your private record, and check on GOV.UK whether and when MTD applies to you.
Questions
Do I pay tax on everything I earn?
No. Self Assessment taxes your profit, and there is a trading allowance for small amounts of self-employed income. The rules and figures are on GOV.UK; Intaj Books does not apply them.
Can I use it for my VAT return?
No. It records income and expenses only. If you are VAT-registered you need VAT-compatible software.
Where is my data stored?
Only in this browser on this device. There is no account and no server copy. Download the CSV regularly to keep a copy.
More: Intaj Books · Track your expenses · See your profit and loss · Keep your receipts · Track your income · Keep simple books · Plan your tax set-aside · Invoice maker
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