Way 1: without AI (the manual way)
Honest cost: 2-3 hours before every close.
- Read each payee string and remember how you coded it last time.
- Code row by row, checking past months for consistency.
- Flag the weird ones for the client or senior.
Uncoded transactions pile up all month, and categorizing them means reading payee strings and trying to remember how you coded the same vendor last time.
Pros of doing it manually
- Free except your time - no tools, no accounts.
- You learn the job deeply and control every detail.
- No data leaves your hands.
Cons of doing it manually
- 2-3 hours before every close - every single time the job runs.
- Quality depends on your energy that day.
- More volume just means more hours; it does not scale.
Way 2: with AI, but without AI Agent Skills (DIY prompting)
A chat assistant genuinely helps here. The catch is that you become the workflow designer. What you have to figure out yourself:
- You must paste your category list and past examples each run, or coding drifts.
- You must set a confidence bar in the prompt, or everything comes back equally certain.
- You must approve the batch yourself - nothing should post unreviewed.
Here is a starter prompt that works - copy it and bring the inputs listed:
Propose categories for these uncoded transactions: [paste date, payee, amount rows]. Follow these past coding examples: [paste]. Per row: proposed category, the evidence, confidence. Mark anything under 70% confident as REVIEW. Proposals only - do not post anything.More on this prompt: the free ai transaction categorization prompt page.
Pros of DIY prompting
- Free, or nearly - any chat assistant works.
- A first draft in minutes instead of hours.
- Fully flexible: tweak the prompt for any edge case.
Cons of DIY prompting
- You become the workflow designer: prompts, test data and output rules are yours to write, test and maintain.
- Output drifts between sessions unless you re-paste the rules every run.
- Nothing is saved for you - sheets, structure and context are rebuilt each time.
Way 3: with AI Agent Skills ($19, one-time)
The Transaction Categorization Agent is this job already designed: fixed evidence rules, output contract, test fixtures and stop points. You ask once:
Hello, categorize these uncoded transactions
And a finished, review-ready artifact lands in your own Drive:
| Date | Payee | Amount | Proposed category | Evidence | Review status |
|---|---|---|---|---|---|
| Sep 10 | AWS EMEA | $612.40 | Infra & hosting | Recurring monthly invoice matches AWS-2026-08 | Ready to post |
| Sep 11 | AMEX *TRAVELCO | $1,140.00 | Unclear - no trip logged | Card statement only; no expense report filed | Needs review |
Sample data shown. Your workspace fills with your real work.
Setup takes about 10 minutes: buy, hand the three files to the assistant you already use (Instinct, ChatGPT, Claude, Gemini or any other assistant that reads files), approve the fictional-data test. Then it runs on a standing cycle or a one-line ask, and stops at every human gate. Full method.
Pros of the ready-made agent
- About 10 minutes to a tested setup, not an afternoon of prompt tuning.
- The same output shape every run - evidence rules and stop points are already designed.
- Runs on a standing cycle or a one-line ask; files land in your own Drive.
Cons of the ready-made agent
- Costs $19 once, where DIY prompting is free.
- The output format is opinionated - you adapt the template rather than rebuild it.
- It still stops and waits for your approval at decision points; it is not zero-touch.
Get the Transaction Categorization Agent · $19
The honest comparison
| Way 1: manual | Way 2: DIY AI | Way 3: $19 agent | |
|---|---|---|---|
| Time to first result | 2-3 hours before every close | An afternoon of prompt tuning | About 10 minutes, tested setup |
| Every run after | Same hours, every time | Re-paste the rules, sheet and context each run | One short ask, or a standing cycle |
| Consistency | Depends on the day | Drifts between sessions | Same output shape every run |
| Cost | Your hours | Free, plus your time | $19 once, files kept forever |
The manual way teaches you the job. DIY prompting is fine for a one-off. The agent wins when the job repeats every week.
More: the Transaction Categorization Agent product page · the AI transaction categorization guide · AI agents for bookkeepers
Questions people ask
What is the fastest way to categorize uncoded transactions?
The $19 ready-made agent: about 10 minutes of setup, then one short ask per run. Manual takes 2-3 hours before every close; DIY prompting takes an afternoon of tuning plus upkeep.
Can I categorize uncoded transactions without AI?
Yes - the manual steps are on this page. Expect 2-3 hours before every close each time the job runs.
Is the $19 agent worth it over DIY prompting?
If the job repeats weekly, yes: you stop rebuilding prompts and re-pasting context every run. For a one-off, DIY prompting is fine and free.
Last updated 13 September 2026 · Reviewed by the AI Agent Skills team.