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ChatGPT for accountants

It cannot do arithmetic. It predicts text rather than calculating, so it produces totals that are close, confident and wrong — never take a number out of it. Point it at the words instead: explaining things to clients in plain English, drafting the letters you write constantly, reading long documents, and writing Excel formulas so Excel does the maths. Client figures stay out of it.

The one thing to understand first

It cannot do arithmetic reliably. This is the single most important fact for this profession and most guides skip it. A language model predicts text; it does not calculate. It will add a column of figures and produce a total that is close, confident, and wrong. Never take a number out of it and put that number into anything.

That sounds like it rules the tool out. It doesn't — it just means you point it at the words rather than the figures. Accountancy is full of writing, explaining and reading, and that is where it earns its keep.

Where it actually helps

Explaining something to a client without the jargon. Paste your own explanation of a tax treatment and ask for a version a business owner would understand. Probably the highest-value use on this list.
The letters and emails you write constantly. Chasers for records, deadline reminders, engagement follow-ups, the awkward one about unpaid fees.
Reading long documents. A new guidance note, a lease, a set of management accounts you did not prepare. Summarise, then ask it questions.
Excel formulas. Describe what you want in plain words and ask for the formula. The formula is the output, not the answer — Excel does the arithmetic, which is exactly the right division of labour.
First drafts of internal policy and procedure notes.
Preparing for a difficult conversation. “What will this client most likely push back on?” is a genuinely useful question.

The pattern: words in, words out. The moment numbers are the output, stop.

What you must not paste in

Client financial data is confidential and in most places professionally regulated. Trial balances, payroll, bank data, anything with a client's name and their figures attached — these stay out until your firm has decided the question properly.

You rarely need them anyway. “Explain the VAT treatment of a deposit on commercial property to a client with no finance background” gets you the same answer as pasting the client's actual ledger.

Try it now: explain something without the jargon

You are my patient tutor. I am an accountant but I am NOT technical.
Teach me by having me do one thing at a time, not by explaining.

Rules for this whole conversation:
- ONE step. Then STOP and ask what happened. Wait for my answer.
- Under 150 words per message.
- Never ask me for client names, figures, or identifying details.
  If I paste any, tell me which parts weren't needed.
- Never do arithmetic for me. If a calculation comes up, say so
  and tell me to do it in Excel.

Lesson: turn something I explain badly into something a client
actually understands.

1. Ask me for one thing I regularly have to explain to clients
   and always end up repeating. No client details.
2. Ask me to explain it the way I normally would, in my own words.
3. Rewrite it for a business owner with no finance background.
   Then STOP and ask whether it is still accurate.
4. Fix whatever I say is wrong, without starting over.
5. Give me a short version I could paste into an email.

Start with step 1. Ask me now, and nothing else.

Step 3 matters more than it looks. Plain-English rewrites often quietly drop a condition that changes the meaning — catching that is your job, and the reason this step stops and asks.

What it gets wrong

Every number. Covered above and worth repeating.
Rates, thresholds and allowances. It will state last year's figure, or another country's, with total confidence. Always check against the current official source.
Jurisdiction. It slides between UK, US and other regimes without noticing. Say which one you mean, every time.
Deadlines. Never take a filing date from it.
Anything that is actually advice. It drafts; you are the one who is qualified and insured.

Questions

Can accountants use ChatGPT?

Yes, for the writing and reading parts of the job: explaining things to clients in plain English, drafting routine correspondence, summarising long documents and producing Excel formulas. Not for arithmetic, and not with client financial data pasted in.

Can ChatGPT do calculations accurately?

No. It predicts text rather than calculating, so it will produce totals that are close, confident and wrong. Ask it for the Excel formula instead and let Excel do the arithmetic. Never take a number out of it and put that number into anything.

Is it safe to put client financial information into ChatGPT?

Not until your firm has decided the question properly. Trial balances, payroll, bank data and anything with a client's name attached to their figures should stay out. You rarely need them: describing the situation in the abstract gets you the same answer.

What is the best first use for an accountant?

Turning your own explanation of something technical into language a business owner understands. You already know the content, so you can immediately tell whether the rewrite is accurate, and it saves you repeating the same explanation to every client.

Can ChatGPT help with Excel?

Yes, and this is one of its better uses. Describe in plain words what you want a formula to do and it will write the formula. The formula is the output, not the answer. Excel then does the arithmetic, which is the right division of labour.

Will it know current tax rates and thresholds?

Not reliably. It will state a previous year's figure, or another country's, with complete confidence and no warning. Every rate, threshold, allowance and deadline comes from the current official source, never from the model.

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