As of 13 August 2026, AI can only partly calculate VAT on services your UK business buys from abroad.

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

Can you do it?

5 minutesto a draft.

30 minutesto something you’d act on.

Cost, all in£0

Skill neededchat-fluent

Who has to check ita professional

What the alternative costsThe available tool data gives no price for an accountant or VAT adviser, so no pounds comparison is made.

If this goes wrong: you put the wrong VAT treatment or amount on your VAT return and your business remains responsible for correcting it.

What to actually do

Hand it to a person
The route this page recommends
Someone with a licence or accountable authority has to sign this before it counts.
Use a tool built for this
Second choice

Do it yourself

The distant third

A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

How to actually do it

Open the relevant supplier invoices and record the supplier country, service description, invoice currency, net amount, VAT shown and any VAT number or special wording.
Confirm whether your business is VAT registered and write down how each service is used by the business.
Paste the completed facts and the invoice wording into the prompt, removing bank details, passwords and unrelated personal data.
Ask the chatbot to check the current GOV.UK and HMRC pages it cites, then open those pages and compare the wording with the service and supplier facts.
Ask the chatbot to recalculate each amount using an exchange rate you provide, or leave the amount in the invoice currency when no suitable rate has been established.
Send the invoices, assumptions, cited HMRC pages and draft bookkeeping treatment to your accountant or VAT adviser before posting the entry or submitting the VAT return.

Prompt

I run a UK business and need to check VAT on services bought from abroad. Use only the facts and documents I provide below, and do not invent missing details.

Business VAT status: [VAT registered, not VAT registered, or unsure]
Business location: [UK country]
Supplier name and country: [details]
Supplier VAT or tax number, if shown: [details]
Description of each service: [details]
Invoice date: [date]
Invoice currency and net amount: [currency and amount]
VAT shown on the invoice: [amount, rate, or none]
How the service is used by the business: [details]
Any other relevant contract or invoice wording: [paste text]

For each purchase, tell me:
1. Which facts determine the UK VAT treatment.
2. Whether the service appears to fall under the UK reverse charge, another treatment, or cannot be classified from the information supplied.
3. The calculation in the invoice currency and in pounds only if I provide an exchange rate or an authoritative rate to use.
4. What I should record for my bookkeeping and VAT return, without guessing any VAT return box if the current HMRC guidance does not clearly support it.
5. What information is missing and the exact question I should ask the supplier or my accountant.

Check the current GOV.UK and HMRC guidance before reaching a conclusion, quote the relevant page links, and separate confirmed rules from assumptions. Do not treat the supplier being overseas as sufficient by itself. Do not give a confident answer for electronically supplied, land-related, transport, event, financial, insurance, educational, or other specialist services unless the applicable rule is established. End with: This is not professional advice. A serious or unusual case needs a UK accountant or VAT adviser.

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

What it gets wrong

It cannot identify the VAT treatment reliably from the supplier country alone because the service type and place-of-supply rule matter.
It cannot establish missing facts about how the service is supplied or used by your business.
It cannot take responsibility for an incorrect reverse-charge treatment or VAT return.
It cannot replace a VAT adviser when a specialist service or exception is involved.

What caps this at PARTLY: judgement under ambiguity, legal accountability and stakes of error.

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.

Axis	Score (0–2)
Output	2
Inputs	1
Verification	1
Liability	1
Effort delta	2
Total	7 / 10

The methodology and its thresholds are published in full.

FAQ

Can AI calculate VAT on services bought from abroad?: Partly. AI can apply a VAT treatment and do the arithmetic when you provide the service, supplier, invoice and business facts, but it can misclassify an unusual service. This is not professional advice, and a serious or unusual case needs a UK accountant or VAT adviser.
Do I pay UK VAT on services from overseas?: Sometimes, but the answer depends on the service, supplier, place of supply and your business VAT status. An overseas supplier does not by itself determine whether the UK reverse charge applies.
How do I account for reverse charge VAT?: Give AI the invoice and the service facts and ask it to explain the treatment against current HMRC guidance, including any assumptions. Have a UK accountant or VAT adviser confirm the bookkeeping and VAT return treatment before submission.
Can I use ChatGPT to work out VAT on a foreign invoice?: You can use a chatbot to organise the facts, find the relevant GOV.UK guidance and check the arithmetic. Do not rely on it alone where the service is specialist, the facts are incomplete or the result will affect a VAT return.

Nearby answers

All VAT & tax filings 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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