Home · Business · Finance & Accounting · Expenses

YES

As of 13 August 2026, AI can calculate expenses in different currencies.

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 colleague

What the alternative costsA spreadsheet or finance professional is the alternative; no comparable price is provided in the available tool data.

If this goes wrong: an incorrect rate or accounting treatment produces the wrong reimbursement or expense record and has to be corrected.

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 30 minutes until you can act on the result.

    How to actually do it

    1. Open your expense spreadsheet or receipt list and gather the transaction date, original amount, currency, supplier, VAT status and business purpose for each expense.
    2. Choose the exchange-rate policy your organisation uses, such as the rate on the transaction date or a finance-team rate, and obtain the applicable rates from your approved source.
    3. Put the expenses and rates into a table with one expense per row, then remove duplicates and mark missing or uncertain values instead of filling them in.
    4. Paste the table, the rate table and the policy into the prompt, and ask the chatbot to calculate each line in GBP with visible workings and a grand total.
    5. Compare every converted amount and the grand total with a spreadsheet formula using the same supplied rates, and investigate any difference caused by rounding or a missing value.
    6. Send the checked calculation and its source rates to the responsible finance colleague before using it for reimbursement, bookkeeping or VAT records.

    Prompt

    Calculate these business expenses in pounds sterling. Use only the figures and exchange rates I provide, and do not invent missing values. For each line, show the original amount and currency, the exchange rate used, the converted GBP amount, and the calculation. Use this exchange-rate policy: [for example, the rate on the transaction date or the rate supplied by our finance team]. Treat expenses marked [VAT included / VAT excluded / VAT unknown] as stated, and flag any VAT treatment you cannot determine rather than guessing. Then provide subtotals by currency, a grand total in GBP, and a list of missing or ambiguous inputs. Keep the calculations to two decimal places for display, but use unrounded values for the total where possible. Data: [paste the expense list or table here]. Supplied exchange rates and their dates: [paste rates here].

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

What it gets wrong

  • AI cannot know which exchange-rate policy your organisation has adopted unless you provide it.
  • AI cannot establish whether a receipt is a valid business expense or whether its VAT treatment is correct from the amount alone.
  • AI cannot guarantee that a current exchange rate is accurate or appropriate without a named, authoritative source and rate date.
  • AI cannot take responsibility for an incorrect reimbursement, bookkeeping entry or VAT record.

Even on a YES, the friction has a name: real time truth, verification cost 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
Verification1
Liability1
Effort delta2
Total8 / 10

The methodology and its thresholds are published in full.

FAQ

Can ChatGPT convert my expenses into pounds?
Yes, if you provide the original amounts, currencies, applicable rates and the rate policy to use. It can show the conversion for each line and calculate a total, but you must check the rates and accounting treatment.
What exchange rate should I use for business expenses?
Use the policy your employer or finance team has specified, such as a rate linked to the transaction date or a supplied corporate rate. AI cannot choose the correct policy for your organisation, so ask your finance colleague if it is unclear.
Can AI calculate VAT on expenses in different currencies?
It can apply VAT figures that you provide and separate them from the expense total. It cannot reliably decide whether foreign VAT is recoverable or how it should be recorded, so serious or uncertain cases need an accountant.
Can I use AI totals for my company accounts?
You can use an AI-generated calculation as a working paper after checking the source amounts, rates, arithmetic and policy. It is not professional advice, and an accountant or responsible finance colleague should handle material or disputed accounting treatment.

Nearby answers

All Expenses 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.

The newsletter

AI news, new answers and product picks, straight to your inbox.