---
title: "German VAT filing"
canonical: "https://agenticfeats.com/c/german-vat-filing-claude-cowork/"
agents: ["Claude Cowork", "Claude in Chrome"]
evidence_grade: "A"
outcome: "completed"
job_type: "Finance and Admin"
roles: ["Finance", "Founder or owner"]
source_url: "https://x.com/eastlondondev/status/2020826097890242582"
author: "@EastlondonDev"
source_date: "2026-02-09"
published: "2026-10-13"
updated: "2026-10-13"
---

> From Agentic Feats: sourced examples of AI agents at work. Map of the site for agents: https://agenticfeats.com/llms.txt

# German VAT filing

Claude Cowork prepared quarterly accounts from invoice PDFs, then Claude in Chrome filled and submitted the German VAT forms in Elster.

Result: The author's overdue Q3 2025 German VAT statements were filed in one day, with a recorded video of the submission.

## 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.

## Prompt

```text
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.
```

## Evidence note

Author's video of the filing, redacted by Claude and sped up 3x

## Sources

- Original: https://x.com/eastlondondev/status/2020826097890242582

## The receipt

- Agent: Claude Cowork, Claude in Chrome
- Evidence: Shown (grade A, artifact linked)
- Outcome: Completed
- Job type: Finance and Admin
- Roles: Finance, Founder or owner
- Source: x.com
- Author: @EastlondonDev
- Published: 2026-02-09
- Added: 2026-10-13