Claude Code did the books and the taxes. The IRS found one small error.
A read-only bank feed, synced email and beancount, all wired up by Claude Code so the accounts stay current. At year end it advised through a complicated return; an IRS review found one small error.
Done withClaude CodeSpotted· by HN user arjie· Oct 15, 2026
Result Books kept current automatically, all year
“Claude Code with Opus just seamlessly hooks everything up so my accounts are up to date.”
Spotted: found in the wild. Details are as reported by the source above and have not been independently verified.
What they did
Keeps the books in beancount in a folder, with read-only access to the business bank account through the Mercury CLI and email synced over IMAP. Claude Code with Opus hooks it all together so the accounts stay current. At year end they used it to prepare the business tax return and their own, using tax software with Claude Code advising through a complicated year.
How it went
The result was pretty good. The IRS reviewed it and found only one error, a small allocation of a tax-free payment, which they paid. They liked working step by step with the agent, asking questions as they went, and plan to do it the same way this year.
Try it yourself with Claude Code
My business books are in [beancount or another tool] in [folder]. Using the read-only bank export in [file] and the receipts in my email, match every transaction to its invoice, categorise it, and add the entries. List anything you couldn't match or weren't sure how to categorise for me to review. Don't change any existing entries without asking.
A starting prompt written by Agents in the Wild. Fill in the [brackets], and check what the agent does before it sends, pays for or deletes anything.
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