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YES

As of 13 August 2026, AI can remove VAT from a gross price.

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

Can you do it?

2 minutesto a draft.

5 minutesto something you’d act on.

Cost, all in£0

Skill needednone

Who has to check ityou

What the alternative costsThe supplied tool data gives no price for a spreadsheet or human alternative; a standard calculator or spreadsheet formula can perform the arithmetic.

If this goes wrong: you publish or quote the wrong net price and need to correct the price, document or invoice.

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, no skill needed, and roughly 5 minutes until you can act on the result.

    How to actually do it

    1. Open your current price list, quote, or invoice and copy the item names, gross prices, currency, and the VAT rate that applies.
    2. Paste the copied information into the prompt, replacing the bracketed slots, and state clearly that the prices are VAT-inclusive.
    3. Ask the chatbot to calculate the net price and VAT amount for each item using the supplied rate, without assuming a different rate.
    4. Compare each drafted net price and VAT amount with a calculator using gross price divided by one plus the VAT rate.
    5. Check that each net price plus its VAT amount equals the original gross price within one penny.
    6. Copy the verified net prices into your price list, quote, or invoice and retain the calculation alongside the source figures.

    Prompt

    Remove VAT from the following gross price or prices. Use the VAT rate I provide, do not assume a rate, and do not give tax advice. For each item, calculate: net price = gross price / (1 + VAT rate as a decimal), and VAT amount = gross price - net price. Show the formula, the unrounded result, and the result rounded to two decimal places. Keep the original item names and currency. If the VAT rate, currency, or whether the price is VAT-inclusive is missing or unclear, ask me before calculating. Check the rounded figures so that net price plus VAT amount equals the gross price within one penny. Data: [item names and gross prices]; VAT rate: [rate]; currency: [currency].

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

What it gets wrong

  • AI cannot decide which VAT rate applies to your particular goods, services, customer, or transaction.
  • AI cannot tell whether the source price is genuinely VAT-inclusive when your records are unclear.
  • AI can repeat a wrong rate supplied by you and produce precise-looking figures from it.
  • AI cannot take responsibility for the price published to customers or used on an invoice.

Even on a YES, the friction has a name: judgement under ambiguity and legal accountability.

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
Verification2
Liability1
Effort delta2
Total9 / 10

The methodology and its thresholds are published in full.

FAQ

How do I remove VAT from a gross price?
Divide the gross price by one plus the VAT rate expressed as a decimal. For example, give AI the gross price and the applicable rate, then check the result by adding the calculated VAT amount back to the net price.
Can ChatGPT calculate the net price from a VAT-inclusive price?
Yes. It can calculate the net price and VAT amount from a VAT-inclusive price when you provide the correct VAT rate. Check the arithmetic and the rate before using the result in a quote or invoice.
What VAT rate should I use to remove VAT?
Use the rate that applies to the specific goods or services and transaction, rather than asking AI to guess. This is not professional advice; ask an accountant or VAT adviser if the applicable rate is unclear or the transaction is material.
Can AI remove VAT from a list of prices?
Yes. Paste a labelled list with the gross prices, currency, and VAT rate, and ask for net prices and VAT amounts rounded to two decimal places. Reconcile the rounded results against the original prices before publishing the list.

Nearby answers

All Pricing 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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