TL;DR
What did arjie use Claude Code for?
A small business owner keeps their accounts as plain-text Beancount files, gives Claude Code a read-only bank connection and their synced email, and lets it keep the books current. They then worked through a complicated tax return with Claude Code advising. They called the result pretty good. The return was reviewed, and the only error was a small allocation issue that the tax office flagged and they paid. They preferred working step by step with the agent over handing everything to an accountant at once, and plan to do the same next year.
What they did
They keep their books in a folder of Beancount files. Claude Code has command-line access to their Mercury business bank account through a read-only token, and their email is synced into the same setup over IMAP. Claude Code ties these together to keep the accounts up to date. At year end, they used the records for the business tax return and their own, entering everything in tax software while asking Claude Code questions as they went.
How it went
They called the result pretty good. The return was reviewed, and the only error was a small allocation issue that the tax office flagged and they paid. They preferred working step by step with the agent over handing everything to an accountant at once, and plan to do the same next year.
Worth knowing
- They admit an accountant and tax lawyer could have prevented most of the issues. The bank token is read-only, so the agent can't move money. This suits someone comfortable with plain-text files and a terminal.
- Price check: Claude: free plan; Pro: US$20/month, or US$17/month on a yearly plan (US$200/year) (checked Nov 1, 2026).
Paying for Claude? See cheaper Claude alternatives.
Try it yourself
Paste this into a chatbot, then add your own details underneath.
Here are this month's bank transactions as a CSV: [paste]. Match each one to an account in my chart of accounts: [list]. Flag any you're unsure about instead of guessing, and list receipts or invoices I should look for in my email to confirm them.
More people who did this
- u/kobestarr (Reddit, Oct 24, 2026): Connected their FreeAgent accounting account to Claude Code through a FreeAgent developer app. They said doing their VAT has never been easier.
Original post
See arjie's original post on Hacker News → (Jul 9, 2026)
Sources
- arjie on Hacker News, Jul 9, 2026 — the original post
- Claude pricing — checked Nov 1, 2026