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PARTLY

As of 13 August 2026, AI can only partly report side hustle income on your tax return.

This still needs a person who signs their name to it.

Can you do it?

15 minutesto a draft.

1 hourto something you’d act on.

Cost, all in£0

Skill neededchat-fluent

Who has to check ityou

What the alternative costsDocuClipper converts bank and card statements into clean spreadsheets automatically, which can help prepare the records before you report them.

If this goes wrong: you report the wrong income or expenses and remain responsible for correcting the return and dealing with any HMRC consequences.

What to actually do

  1. Hand it to a person

    The route this page recommends

    A person who owns the outcome does this end to end, worth it when the failure is dear.

  2. Use a tool built for this

    Second choice

  3. Do it yourself

    The distant third

    A chat interface, chat-fluent skill, and roughly 1 hour until you can act on the result.

    How to actually do it

    1. Open your bank, payment-platform and sales records, then gather invoices, receipts, refund records and evidence of business fees for the relevant tax year.
    2. Remove passwords, account numbers and unrelated personal transactions, then paste or attach the remaining records to the prompt.
    3. Describe the side hustle, when it started, how customers pay you and any other income connected with it in the bracketed section.
    4. Ask the model to produce the missing-information list and answer each item from your records rather than asking it to guess.
    5. Compare its income and expense totals transaction by transaction with your bank, platform and receipt records, and correct any omissions, duplicates or personal spending.
    6. Open the relevant Self Assessment pages and current GOV.UK guidance, then check each proposed category and any flagged expense against those sources.
    7. Enter only the figures you have reconciled into your return, and send the draft and unresolved classifications to a qualified tax adviser if the side hustle has complicated transactions, shared costs or uncertain expenses.

    Prompt

    Help me prepare, but not file, my UK Self Assessment figures for income from a side hustle. Use only the records and facts I provide. First list the information and documents still missing. Then separate gross income, refunds, fees, allowable business expenses and personal spending, showing each transaction or source you used. Reconcile every total to my records and show the arithmetic. Do not invent figures, assume that an expense is allowable, choose a tax relief, or state a rule as current unless you can support it with a current GOV.UK source that I provide or ask me to check. Flag every transaction or classification that needs a decision by me or a qualified tax adviser. Produce a clearly labelled draft schedule of figures for me to compare with HMRC guidance and my Self Assessment return. My tax year is [tax year]. My side hustle is [brief description]. My records are: [paste records or attach files].

    Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

What it gets wrong

  • AI cannot know whether every payment belongs to the side hustle unless your records identify it.
  • AI cannot turn an ambiguous cost into an allowable expense without applying the facts and current HMRC rules.
  • AI cannot confirm that your records are complete when money passed through cash, multiple accounts or several platforms.
  • AI cannot take responsibility for the declaration or any later HMRC enquiry.
  • AI cannot replace a qualified tax adviser for complicated income, expenses or tax status questions.

What caps this at PARTLY: legal accountability, judgement under ambiguity and verification cost.

How we scored this

Five axes, each scored nought to two by hand: ten means AI carries the task cleanly, and the thresholds that turn a total into YES, PARTLY or NO are published in the methodology. Each axis name links to its definition.

AxisScore (0–2)
Output2
Inputs2
Verification1
Liability1
Effort delta1
Total7 / 10

The methodology and its thresholds are published in full.

FAQ

Can AI calculate my side hustle income for tax?
Yes, it can total the income and expenses you provide and show the arithmetic. Check every total against your bank, platform and receipt records because it cannot know whether your records are complete.
Can I use ChatGPT to do my Self Assessment tax return?
You can use it to organise records and prepare a draft, but not as the person responsible for the return. You remain liable for what you submit to HMRC, and this is not professional advice.
Do I have to declare money from a side hustle to HMRC?
That depends on the nature of the activity, the income involved and the current rules. Check the relevant GOV.UK guidance, and ask a qualified tax adviser if your case is unclear or involves substantial amounts.
Can AI tell me which side hustle expenses are tax deductible?
It can help list and classify expenses, but it can misapply the rules to unusual or mixed personal and business costs. This is not professional advice, so a serious or uncertain case needs a qualified tax adviser.

Nearby answers

All Tax returns & HMRC rulings

Assessed by gpt-5.6-luna (gpt-5.6-luna) on 2026-08-13, second-checked by an independent model. Wrong somewhere? Email [email protected] and it gets re-checked.

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