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Quick answer
Turn off the setting that lets your chats train the model, strip account numbers, names and tax IDs before pasting, and work from summaries or exports with only the columns you need. Keep originals in your accounting software.
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At a glance
All outcome figures are estimates from cited sources, not independent verification by us.
- What it is allowed to do
- Read-only
Only reads, researches, or summarizes. It never drafts outbound content or changes anything.
- Time saved (estimate)
- About 15 minutes to set up once.
- Difficulty
- Beginner
- Tools needed
- ChatGPT, Claude
- Typical cost
- Settings are available on free plans. Prices: Not stated in sources.
Reviewed Nov 2, 2026
Basis (estimate): Estimate only: based on the steps above, not timed.
What does this setup do?
Set up AI for bookkeeping help without exposing more than you need: change the training setting, strip identifying details, and keep a clear rule for what never goes in.
Who is it for?
Owners who want AI help categorizing transactions or reading statements but worry about sending confidential finances to the cloud.
How do you set it up?
Tools
- ChatGPT or Claude settings
- Your bank or accounting export
- A spreadsheet to remove columns
Steps
- Turn off training on your chats. OpenAI says that on Free, Plus and Pro, data sharing is on by default and you can turn off Improve the model for everyone in Data controls and keep your chat history.
- In Claude, change the model improvement setting. Anthropic says once it is off, new chats are not used for future model training.
- Before pasting, delete columns you do not need: full account numbers, tax IDs, client addresses. Keep date, description, amount and category.
- Use the prompt below so the AI works only from what you pasted and flags anything it is unsure about.
- Keep the official record in your accounting software; use AI output as a draft you check.
- Write a never-paste list: passwords, full card numbers, tax IDs and login codes.
Example output
Illustrative. Your results will differ.
- Office supplies: $214.60 (3 transactions)
- Fuel: $388.12 (6 transactions)
- REVIEW: 'SQ *JMS 4471' $95.00, vendor unclear
Where to paste this prompt
ChatGPT → Project instructions, or ChatGPT Tasks for scheduled reminders (once a day on Free)
Copy-paste prompt
Adapt bracketed fields to your situation.
Categorize these transactions for my bookkeeping. I removed account numbers and personal details.
My categories: [LIST]
Transactions (date, description, amount): [PASTE]
Rules:
- Use only my categories. If unsure, mark REVIEW and say why.
- Do not guess vendor details that are not in the description.
- Total each category and show the math.
- Do not ask me for account numbers or IDs.Newsletter
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What usually goes wrong?
Where agents tend to stall on this job. More patterns in Where AI gets stuck.
- Pasting a full bank statement with account numbers.
- Assuming the training setting is already off.
- Treating AI categories as final without review.
Which chat tools work with this prompt?
Paste the prompt into any of these assistants (free or paid tiers).
- ChatGPT
- Claude
Common questions
- Is it safe to use ChatGPT for bookkeeping?
- It can be, with care: turn off model training on your chats, remove identifying details, and keep official records in your accounting software.
- Does turning off training delete my chats?
- OpenAI says turning off Improve the model for everyone does not delete or hide saved chats.
- What should I never paste?
- Passwords, full card or account numbers, tax IDs and login codes.
Where should you go next on this site?
What tips make it smoother?
- Business plans often have different data terms; check your workspace settings if you use one.
- Fewer columns means less exposure and better answers.
- Keep originals in your accounting tool, not in chat history.
Where do the claims come from?
Summaries use public sources linked below, not independent verification. How setups are picked.
- Read OpenAI’s write-up (help.openai.com)
OpenAI: Data controls in ChatGPT: on Free, Plus and Pro, data sharing is on by default; turn off Improve the model for everyone and keep chat history (read 2026-11-02 from a search result excerpt of the page)
- Read Anthropic’s write-up (privacy.claude.com)
Anthropic: Change model improvement privacy settings: after turning it off, new chats and coding sessions are not used for future model training (read 2026-11-02 from a search result excerpt of the page)
Related setups
- Do a month of bookkeeping in one sitting
Run a monthly bookkeeping close: categorize transactions, spot problems, summarize the month
- Extract vendor invoices and bundle the month for accounting
When invoice email arrives, extract vendor, amount, due date, and invoice number into a tracker; at month-end, bundle PDFs plus an index for your accountant after you approve.
- Track true profit per order
Upload your order export and your costs, and get the real profit on each order and product after product cost, shipping, platform fees and ad spend.