Skill: Vietnam Payroll & Tax Calculator (2025 Rules)

Description: Calculates Net Income, Personal Income Tax (PIT), and Social Insurance (BHXH) based on Vietnam's progressive tax brackets.

Tools:

calc_pit.py: The main calculation engine.

Usage: To calculate a salary breakdown, run the python script with the following arguments:

python calc_pit.py --gross <AMOUNT> --dependents <COUNT> --region <1|2|3|4>

Arguments: --gross: The gross monthly salary in VND (e.g., 80000000). --dependents: Number of qualified dependents (children, elderly parents). Default is 0. --region: Minimum wage region (1 is Hanoi/HCM/Nha Trang). Default is 1.