France / Individual Taxpayer – Numerical Case Study: How CEHR and CDHR Apply in Practice
To fully understand how these mechanisms impact you, consider the following simplified example.
Your Situation
You are a French tax resident with:
• Total income: €1,000,000
• Taxable income after deductions: €700,000
• Income tax paid: €180,000
• Tax credits and optimization strategies applied
Your effective tax rate is therefore approximately 18% (€180,000 / €1,000,000).
Step 1: Application of CEHR
Because your income exceeds the CEHR thresholds:
- A 4% CEHR applies on part of your income
CEHR due: approximately €20,000
Your total tax now becomes:
- €180,000 (income tax)
- €20,000 (CEHR)
= €200,000 total tax
Your updated effective tax rate: 20%
Step 2: Application of CDHR
Assume the CDHR sets a minimum effective tax rate of 25% (illustrative).
Your current effective rate is 20%, which is below the threshold.
A top-up is required.
CDHR Calculation
- Minimum required tax: €1,000,000 × 25% = €250,000
- Current tax paid: €200,000
- CDHR due: €50,000
Final Outcome
Component Amount
Income Tax €180,000
CEHR €20,000
CDHR (top-up) €50,000
Total Tax €250,000
Your final effective tax rate becomes 25%, regardless of your optimization strategies.
Key Takeaways for You
- The CEHR increases your tax because your income is high
- The CDHR increases your tax because your effective rate is too low
- Even well-structured tax planning may be partially neutralized
Most importantly, your tax outcome is no longer driven solely by income—it is driven by your effective tax rate floor.
Planning Insight: What You Should Do Differently
In this environment, you should:
- Simulate your effective tax rate before year-end, not after filing
- Quantify the real benefit of each tax optimization strategy
- Anticipate CDHR exposure early, especially if your rate drops significantly
- Align your French and international tax positions
The objective is no longer just tax efficiency — it is controlled, predictable taxation.