Yes, you can write off ChatGPT as a business expense if you use it for work. A paid subscription counts as a software or subscription cost, same as any other tool you buy to run your business. Keep the receipt or invoice from OpenAI and note what you use it for, such as drafting emails, content or admin. If you’re self employed, claim the full cost; through a limited company, run it through the business account and log it as an expense.
The short version: yes, if you use ChatGPT Plus, Jasper, Midjourney, Claude, Copilot or any other AI tool for your business, it’s almost always a legitimate tax-deductible expense in the UK and the US. The catch isn’t whether you can claim it, it’s whether you’re claiming it correctly, splitting personal use out of it, and keeping the paperwork HMRC or the IRS would accept if they asked.
I get asked this constantly, usually by people who’ve just signed up for their fourth AI subscription that month and are quietly panicking about whether their accountant is going to raise an eyebrow. Short answer: they won’t. AI subscriptions sit in exactly the same category as any other software cost, alongside your accounting package, your email tool, your Canva subscription. The rules aren’t new or special because the word “AI” is attached to the invoice.
The basic test that decides everything
In the UK, HMRC uses the “wholly and exclusively” test. If you bought the tool wholly and exclusively for business purposes, it’s deductible. In the US, the IRS uses “ordinary and necessary” under Schedule C. Different wording, same practical outcome: if a reasonable person would agree the tool helps you run your business, and you’re not just using the deduction as cover for a personal subscription, you’re fine.
Where people trip up is mixed use. If you’re a sole trader who uses ChatGPT Plus at $20 a month to write client proposals during the week and then asks it to plan your kid’s birthday party on a Sunday, that’s mixed use, and technically you should apportion it. Nobody’s going to audit you over £4 of birthday planning. But if you’re running Midjourney at $30 a month and 80% of what you generate is for a personal art project, that’s a different conversation, and claiming the full amount is where things go from “reasonable” to “risky.”
What counts as an AI tool expense
This is broader than most people assume. It’s not just the chatbot subscription. It includes:
- Monthly subscriptions: ChatGPT Plus ($20/month), Claude Pro ($20/month), Jasper (from $49/month), Midjourney (from $10/month), Copilot for Microsoft 365 (£24.70/user/month in the UK)
- AI features bundled into tools you already pay for, like the AI writing assistant in your email platform or the AI transcription in your meeting software
- One-off or annual licenses for AI-powered design, video, or automation tools
- API costs if you’re building anything on top of OpenAI’s, Anthropic’s, or Google’s models, billed by usage rather than a flat fee
- Training or courses on how to use AI in your business, including consultancy or coaching fees
- Hardware upgrades bought specifically because you needed more processing power to run AI tools locally, though this usually falls under capital allowances rather than a straightforward expense
That last category is the one people forget. If you’re a sole trader and you decide to work with someone to implement AI across your business rather than just dabbling with free tools, that cost is deductible too. I’ve had clients ask whether hiring an AI consultant is worth the money versus just muddling through with YouTube tutorials, and tax treatment is one of the smaller reasons to do it, but it does help the maths.
My own experience with this
When I sat down with my accountant two years ago to go through my software spend, I didn’t realise how much I was paying across AI tools until we listed it out. ChatGPT Plus, Claude, an AI transcription tool for podcast editing, an AI image generator I’d used twice, and a scheduling assistant with AI baked in. It came to just over £180 a month, more than £2,000 a year, and I’d been treating half of them as an afterthought rather than a real business cost.
The uncomfortable bit, and this is something most people don’t want to hear: being able to deduct it doesn’t make it a good spend. I was paying for two tools that did almost the same job because I’d forgotten I’d signed up to both. The tax deduction meant I got roughly 19% to 20% of that waste back through reduced corporation tax, but 80% of a wasted subscription is still waste. A deduction is a discount, not a refund. I still paid the other £1,600 for nothing. That review is now something I do every quarter, not because HMRC cares, but because I was quietly bleeding money and calling it a business expense made it feel fine.
Step by step: how to claim it
- Pay through a business account or card, not personal funds. This alone solves half the disputes that come up later. If you’re still paying for tools out of your personal current account, it’s worth reading up on why a business credit card makes this so much cleaner, mainly because every AI subscription shows up on one statement instead of getting lost in your grocery shop.
- Keep the invoice, not just the card statement. OpenAI, Anthropic, and most SaaS tools email a receipt automatically. Set up a folder, digital or otherwise, and drop every one in there the day it arrives. HMRC wants evidence of what was bought, not just that money left your account.
- Categorise it correctly in your books. Most AI tools sit under “software” or “subscriptions” as an expense category. If you’re using something like Xero, QuickBooks, or FreeAgent, this takes seconds. If you’re still doing this on a spreadsheet, it’s worth looking at accounting software built for this, because manually tracking a dozen small recurring subscriptions is exactly the kind of admin that gets forgotten and then costs you at year end.
- Apportion for mixed use if it applies. If you use a tool for business 70% of the time and personal 30%, claim 70%. Be honest about the split; you don’t need to be exact to the percentage point, but you do need a reasonable basis for the number if it’s ever queried.
- Decide capital versus revenue for bigger purchases. A £20 monthly subscription is a revenue expense, deducted the year you pay it. A £3,000 AI-powered software license bought outright with multi-year use might count as a capital asset, meaning it goes through capital allowances instead, spread differently. Your accountant will know which bucket it belongs in, and it matters for how much tax relief you get and when.
- File it in the right box. UK sole traders put this under “other business expenses” on the Self Assessment return. Limited companies deduct it before calculating corporation tax profit. US sole proprietors typically use Schedule C line 27a or the software/subscription line depending on how their accountant sets up the chart of accounts.
The VAT problem nobody mentions
Here’s the specific bit that most guides on this topic skip entirely, and it trips up VAT-registered UK businesses. ChatGPT Plus, Claude Pro, and most US-based AI tools don’t charge UK VAT on their invoices. If you’re VAT registered, you’re required to self-account for VAT under the reverse charge mechanism for cross-border B2B digital services. In practice this means you declare the VAT on your own return as if you’d charged yourself, then reclaim it back if you’re entitled to, which for most VAT-registered businesses nets out to zero cash impact but does need to appear correctly on your VAT return. Skip it and technically you’ve got an incomplete VAT return, even though no money changes hands over it. Most small businesses never do this because their accountant either doesn’t flag it or assumes the value is too small to bother with, but if you’re ever inspected, it’s the sort of thing that gets picked up.
What about US businesses specifically
If you’re a US sole proprietor or single-member LLC, AI tool subscriptions go on Schedule C as ordinary business expenses, generally under “office expense” or a custom software/subscriptions line if your bookkeeper has set one up. There’s no special IRS guidance for AI tools specifically because there doesn’t need to be, they’re treated the same as any other cloud software subscription, the same category as your Zoom account or your CRM.
If you’re running a larger operation and buying AI infrastructure outright, like servers or specialised hardware to run models locally, Section 179 may let you deduct the full cost in the year of purchase rather than depreciating it over several years, up to the annual limit, which for 2026 sits well above what most small businesses would ever spend on this. Talk to a CPA before assuming this applies, because the rules around what qualifies as “placed in service” are specific.
Where people push it too far
I want to be blunt about this because I see it a lot. Some people treat “AI” as a magic word that makes any subscription automatically business-safe. It doesn’t. If you’re self-employed and you sign up to an AI meal-planning app because it’s convenient, that’s a personal expense wearing a business costume, and if it ever gets looked at, it won’t hold up. The test isn’t whether the tool has AI in it. The test is the same wholly-and-exclusively or ordinary-and-necessary standard that’s applied to every other expense you’ve ever claimed. AI doesn’t get special treatment, good or bad.
There’s also a quieter version of this problem worth naming: people who use AI tools to replace work they used to pay a person to do, then feel awkward writing it off because it feels less “legitimate” than paying a salary. It isn’t. If you replaced part of what a virtual assistant used to do with an AI scheduling tool or an AI content assistant, that subscription is exactly as deductible as the VA’s invoice was. The tax office doesn’t care who or what did the work, only that the cost was incurred for the business.
A quick sanity check before you claim anything
Before you add a tool to your expense list, ask yourself three things: would I still be paying for this if I closed the business tomorrow, can I point to specific business use if asked, and am I still using it. That third one is the one that catches people out most. Doing a proper audit of your subscriptions once a quarter, the same way you’d review any other recurring cost, is one of the more useful habits I picked up while rebuilding how I run things, right alongside the wider questions worth asking yourself before you go fully self-employed in the first place, because software creep is one of those costs that quietly grows the longer you’re on your own with nobody double-checking the direct debits.
Frequently asked questions
Is ChatGPT Plus a tax-deductible expense?
Yes, if you use it for business purposes such as writing, research, client work, or admin, it’s deductible in the UK under the wholly and exclusively rule and in the US as an ordinary and necessary business expense. If you also use it personally, apportion the cost based on a reasonable estimate of business versus personal use.
Can I claim AI tools if I use them for both personal and business purposes?
Yes, but only the business proportion. If you use an AI tool roughly 60% for work and 40% personally, claim 60% of the cost, and be prepared to explain your reasoning if asked, rather than claiming the full amount because it’s easier to enter one number.
Do I need a receipt or invoice to claim an AI subscription?
Yes. Card statements alone aren’t enough for HMRC or the IRS if you’re audited. Save the email invoice or receipt every AI tool sends automatically when payment is taken, and keep it filed alongside your other business records.
Can I claim the cost of an AI consultant or coach on my taxes?
Yes, fees paid to an AI consultant, coach, or trainer to help you implement AI tools in your business are deductible as a professional services or training expense, the same way you’d treat any other consultancy fee.
