--- title: "Can you use AI to do my taxes?" url: https://canyouuseai.com/questions/do-my-taxes/ verdict: yes-with-care verdict_label: "Yes, with care" category: "Money and tax" published: 2026-10-01 updated: 2026-10-01 author: "Jack Stovell" publisher: "Adapt Progress Evolve Limited" language: en-GB --- # Can you use AI to do my taxes? **Verdict: Yes, with care.** Yes, with care. AI can explain HMRC wording, sort your records and prepare questions. You stay responsible for every figure on your Self Assessment return, so check it all yourself. AI can help you understand, organise and check your tax return. What it cannot do is take the legal weight off you. Whatever goes to HMRC is yours, down to the last figure. Self Assessment is the system HMRC uses to collect Income Tax. Most people never think about it, because tax is usually taken automatically from wages and pensions. If you have other income, say you're a sole trader, you report it on a Self Assessment tax return, and HMRC works out what you owe from what you tell them. So the numbers you put in are the whole game. You also have to keep records, such as bank statements and receipts, so you can fill the return in properly. That's where AI starts to look useful, and also where it starts to look risky. ## How to do it well The best use is translation. You get a letter, or you hit a section of the return, and the wording makes your eyes glaze over. Ask an AI tool to explain it in plain English. Then, and this is the bit people skip, check what it said against HMRC's guidance for that section. There's guidance for each part of the return (self-employment, employment, pensions, property, capital gains and more), plus help text throughout the online form. Use the chatbot to get your bearings and gov.uk to confirm. A simple prompt does the job: ``` Explain this section of the UK Self Assessment tax return in plain English, and list the records I would need to fill it in. Point me to the HMRC guidance I should check your answer against. ``` Then go and gather those records yourself. The second job is sorting. If you've got a year of income and expenses scattered about, AI can tidy them into a clear list from your own records. Handy, a bit like having someone hold the folder open while you sort the papers. But every total still needs checking against the bank statements. Every one. A neat list can still be a wrong list, and neatness has a way of making errors look trustworthy. If this is the part that eats your evenings, [using AI for bookkeeping](/questions/do-my-bookkeeping/) covers it in more detail. Third, use it to prepare questions. Ask it for a list of things to put to HMRC's digital assistant, which answers Self Assessment questions and can pass you to webchat with an adviser if one is available. Or take the list to an accountant or tax adviser. You walk in knowing what you don't know, which is a good place to start. Now the flip side. Don't let a chatbot decide your figures, which reliefs you can claim, or whether you need to file at all. Those are checks against gov.uk, every time. Keep your identifiers out of chat tools too: your UTR, your National Insurance number, your login details. You'd do the same with any online service you don't control. And AI does not file the return. You fill it in and submit it yourself, through HMRC's service or software. ## Rules and risks The deadlines for the 2025 to 2026 tax year are worth knowing. HMRC must receive a paper return by 11:59pm on 31 October 2026. Online, it's 11:59pm on 31 January 2027, which is also the deadline to pay. If you need to file and haven't sent a return before, tell HMRC by 5 October. Miss them and it gets expensive. Late filing starts with a £100 penalty. After 3 months it's £10 a day, up to £900. After 6 months it's 5% of the tax due or £300, whichever is greater, and the same again after 12 months. Late payment costs 5% of the unpaid tax at 30 days, 6 months and 12 months, plus interest. A slow, careful afternoon with a chatbot is fine; a chatbot session that quietly becomes a missed deadline is not. Then there's the bigger principle. HMRC's guidance on reasonable care says everyone has a responsibility to take reasonable care over their tax affairs, which means doing everything you can to make sure your return is accurate. If you don't, HMRC charges penalties for inaccuracies. If you took reasonable care and were still wrong, it won't charge a penalty. If you're unsure about anything, HMRC's advice is to ask HMRC or a tax adviser. So don't assume that because a tool told you something, you've done your bit. Asking an AI is no substitute for checking, or for asking HMRC or an adviser when you're genuinely unsure. Deliberate inaccuracies can mean higher penalties, or court. And if you use an adviser, it's your job to give them accurate and complete information. Mistakes happen, though. You can correct a return within 12 months of the Self Assessment deadline. Online, you have to wait 3 days (72 hours) after filing before you can update it. If money's tight, there's help. If you're on a low income (up to about £380 a week) and HMRC can't help, you may get free professional advice from TaxAid, or from Tax Help for Older People if you're over 60. You can also authorise an accountant or tax adviser, or name a "trusted helper", a friend or relative who can deal with HMRC for you. For anything that's turned into a dispute, see [using AI for legal advice](/questions/get-legal-advice/). This is general information, not tax or financial advice. ## Sources - [GOV.UK: Self Assessment tax returns](https://www.gov.uk/self-assessment-tax-returns) - [GOV.UK: Self Assessment tax returns, Deadlines](https://www.gov.uk/self-assessment-tax-returns/deadlines) - [GOV.UK: Self Assessment tax returns, Sending a return](https://www.gov.uk/self-assessment-tax-returns/sending-return) - [GOV.UK: Self Assessment tax returns, Penalties](https://www.gov.uk/self-assessment-tax-returns/penalties) - [HMRC: Reasonable care: tax returns and other documents](https://www.gov.uk/guidance/reasonable-care-tax-returns-and-other-documents) - [GOV.UK: Self Assessment tax returns, If you need to change your return](https://www.gov.uk/self-assessment-tax-returns/corrections) - [GOV.UK: Self Assessment tax returns, How to get help](https://www.gov.uk/self-assessment-tax-returns/get-help) - [GOV.UK: Get help with tax](https://www.gov.uk/tax-help) - [HMRC: Self Assessment general enquiries](https://www.gov.uk/find-hmrc-contacts/self-assessment-general-enquiries) ## Questions people ask ### Can an AI chatbot file my Self Assessment tax return for me? No. You file the return online through HMRC's service, or on paper, or through commercial software. AI can explain sections, tidy your records into a list and help you prepare questions, but you enter the figures and submit the return yourself. HMRC calculates what you owe from what you report, so the numbers you put in are what count. ### If AI gets my tax return wrong, will HMRC still fine me? It can. HMRC says everyone must take reasonable care to make sure their returns are accurate, and charges penalties for inaccuracies that come from not taking it. If you took reasonable care and were still wrong, HMRC won't charge a penalty. A chatbot's answer does not count as that care on its own, so check every figure against your records and HMRC guidance. ### What are the Self Assessment deadlines for the 2025 to 2026 tax year? HMRC must receive a paper return by 11:59pm on 31 October 2026. An online return is due by 11:59pm on 31 January 2027, which is also the deadline to pay what you owe. If you need to file and have not sent a return before, you must tell HMRC by 5 October. ### Where can I get free help with my tax return instead? There is help text throughout the online return and guidance for each section, and HMRC's digital assistant answers Self Assessment questions, with webchat to an adviser if one is available. If you're on a low income and HMRC cannot help, TaxAid, or Tax Help for Older People if you're over 60, may give free professional advice.