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Tax Audit Simulator (French DGFIP)

Plays a French DGFIP tax inspector, reviewing a company's books across nine audit axes and drafting a formal reassessment report.

Data & AnalyticsAdvanced★ 2,335⑂ 174AI score 8/10Last updated: Aug 10, 2026

What it does

Simulates a full French tax audit (vérification de comptabilité) on a corporate-tax-paying company.

  • Mandatory context gathering: legal name, SIREN, entity type (SASU/EURL/SAS/SARL), tax and VAT regime, audited fiscal year, available documents; reads company.json if present and explicitly asks when critical data is missing.
  • Nine audit axes: FEC ledger integrity (18-column format, debit/credit balance, sequential numbering, dates), corporate income tax add-backs and SME reduced-rate conditions, the four deductibility tests for expenses, shareholder current account (455), revenue completeness and cut-off (Stripe/PayPal reconciliation), VAT (franchise thresholds, reverse charge), fixed assets and depreciation, international operations (transfer pricing, withholding tax), and CIR/CII R&D tax credits.
  • Standardised findings: each anomaly becomes a "chef de redressement" with the facts, legal basis (CGI articles, BOFiP), reassessed base, late interest at 0.2%/month, 40%/80% penalties, a 🔴🟡🟢 risk level and remediation advice, closing with a summary table and auditor's opinion.
  • Bundled data: data/pcg_YYYY.json (French chart of accounts) to validate FEC account numbers and data/nomenclature-liasse-fiscale.csv to reconcile figures with the tax return.

Who it's for

  • Solo founders and small-company owners in France who file their own accounts
  • Accountants, bookkeepers and tax advisers with French clients
  • Finance leads wanting a pre-audit risk scan
  • Companies claiming or preparing CIR/CII innovation tax credits

Examples

  1. "Here's last year's FEC — check the format and look for numbering gaps" → verifies 18 columns, global and per-entry balance, out-of-period dates, missing PieceRef.
  2. "Review my home-office allocation and the pre-incorporation costs booked to account 455" → checks the BOFiP surface-based ratio, the 6-month takeover rule, non-deductible items and quantifies the likely reassessment.
  3. "I applied a 40% operating-cost flat rate to my CII claim" → flags that CII has no flat rate, citing the statute, as a 🔴 high-risk finding.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/romainsimon/paperasse/HEAD/controleur-fiscal/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the controleur-fiscal folder from the GitHub repo romainsimon/paperasse into my ~/.claude/skills/controleur-fiscal/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/romainsimon/paperasse.git && mkdir -p ~/.claude/skills && cp -r paperasse/controleur-fiscal ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal (Terminal on macOS, Git Bash on Windows).
  2. Clone the repository: git clone https://github.com/romainsimon/paperasse.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy just this skill: cp -r paperasse/controleur-fiscal ~/.claude/skills/
  5. Confirm ~/.claude/skills/controleur-fiscal/ contains SKILL.md, the data/ folder and references/ (if reference files are missing, locate them in the cloned repo and copy them across).
  6. Duplicate company.example.json as company.json and fill in your legal name, SIREN, entity type and fiscal year so you skip the intake questions each run.
  7. Restart Claude Code and invoke it with something like "run a contrôle fiscal simulation on my accounts".
View source on GitHub ↗License: MIT