This is determined by:
Your tax residence
If you are a resident of Metropolitan France or one of France’s Overseas Departments (excluding Saint Martin and Saint Barthelemy), income tax will be withheld from your retirement pension.
Your taxation rate
If you have been and continue to be tax-exempt, nothing will change for you: France’s tax authorities will report a 0% income tax withholding rate to CRPN and no tax will be withheld from your pension.