Catch up on two years of overdue Dutch taxes
A user who was two years behind had Claude untangle expenses, find receipts and invoices, and handle Dutch tax filings in one afternoon. ·
Done withClaude
- What they did
- The user built an automated accounting system around Claude that pulled in two years of transactions from three bank accounts, scraped email to match receipts and invoices, categorized expenses, calculated what was owed and when, and generated reports in Dutch tax-agency box format for an accountant. They also had Claude do deep research on their specific Dutch tax situation and compile it into a knowledge-base wiki, then used that context to flag ambiguities and draft questions for the accountant rather than relying on Claude alone.
- How it went
- They say it cleared a two-year backlog in one afternoon, should reduce future quarterly summaries to a single CLI command taking about five minutes, and had already saved them thousands of euros. It still surfaced 19 questions for the accountant, and commenters warned the output needed careful checking.
- Worth knowing
- The main catch is verification: even after automating the work, they still sent 19 edge cases and ambiguities to their accountant.
Try it yourself with Claude
I'm behind on my [country] taxes for [years]. I'll paste in my bank transactions, invoices, and notes: [paste or attach]. Sort the expenses into tax categories, flag missing receipts or invoices I should track down, and walk me through what I need to file for each year. End with a checklist of filings and deadlines, and ask me before assuming anything uncertain.
Want help getting this working? Join the Vibe Coding Academy ↗ Run by Alex Finn, who also runs this site.
Source: Reddit · May 1, 2026
Related use cases
Build a C compiler with a team of parallel agents
Anthropic's engineering write-up on tasking Opus 4.6 agent teams with building a C compiler.
Build a charting tool from blood test PDFs
Matt Stockton gave Claude his MyChart blood test PDFs and it produced a web app charting results over time and flagging abnormal values in about five minutes.
Run a daily-updated local business directory autonomously
Claude on a scheduled task built and deployed a directory of local contractors, then each morning finds and vets new examples, makes an SEO fix, and pushes to GitHub.
Submitted by JC Preston
Shop for umbrella insurance through your personal agent
Personal AI agents use Coverage Cat's Agent API/MCP to size umbrella coverage and compare carrier options with price ranges, backed by a licensed broker.
Custom agent
Prepare and file overdue German VAT statements
Cowork with Claude's Chrome extension prepared accounts from invoice PDFs, then logged into Elster and submitted the overdue Q3 2025 VAT forms.
Pull stock fundamentals from SEC filings for valuation
A developer used ChatGPT Agent mode to extract revenue growth, free cash flow and net cash from 10-Q filings with source URLs, feeding a multi-agent valuation and sentiment workflow.
Get 5 like this every morning
The best things people got an AI agent to do, each with the prompt to try it.