Shown·Claude Cowork, Claude in Chrome
German VAT filing
Claude Cowork prepared quarterly accounts from invoice PDFs, then Claude in Chrome filled and submitted the German VAT forms in Elster.
The author's overdue Q3 2025 German VAT statements were filed in one day, with a recorded video of the submission.
Overview
How it was set up
Claude Cowork with a project folder of invoice and receipt PDFs, plus the Claude Chrome extension. The author logged in to Elster themselves. No custom code.
Worth knowing
The author logged in to the tax portal manually before handing the forms to Claude.
A prompt to start from
Using the invoices and receipts in this folder, prepare the accounts for each quarter of [year]. Then, in the [tax portal] I have logged into, find the relevant [VAT] forms for [quarter], fill them out, and submit them.
Written by Agentic Feats from the source. Not the author's exact prompt.
Sources 1
History
- Source published
- 2026-02-09
- Added to Agentic Feats
- 2026-10-13
- Pick
- No
- Markdown copy
- /c/german-vat-filing-claude-cowork.md
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