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    See the real profit on this month's work, not just the top line.

    For sole traders and small firms where 'busy' doesn't always mean 'making money'. Tracks income, expenses and estimated tax for the 2025/26 tax year, all on your device.

    Your entries are saved in this browser only. They are not backed up to our servers. If you clear your cache or switch devices, they will be lost.

    Income

    £
    £
    £

    Expenses

    £
    £
    £
    £
    £
    £
    £
    £

    Tax Year Summary — 2025/26

    Total income YTD£0.00
    Total expenses YTD£0.00
    Net profit YTD£0.00
    Estimated income tax£0.00
    Estimated Class 4 NI£0.00
    Estimated Class 2 NI£0.00
    CIS deductions already paid£0.00
    Estimated tax bill remaining£0.00
    Set aside roughly per month£0.00

    What the law actually says

    • Self-assessment requires you to keep records of all business income and expenses for at least 5 years after the 31 January submission deadline.
    • Cash-basis accounting is allowed for sole traders below the £150,000 threshold. Above that, accruals basis is mandatory.
    • Estimated tax shown by tools is not a substitute for filing. HMRC interest and penalties run from the actual due date, not the day you realise.

    What to do next

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    SiteKiln provides general guidance only. Nothing on this site — including our guides, tools, templates and document hub — is legal, tax, financial or professional advice.

    Every situation is different. Laws, regulations and industry standards change. You should always check with a qualified professional before making decisions based on what you read here.

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