{"country":"vn","currency":"VND","name":"Vietnam","taxYear":2025,"taxYearPeriod":"January - December 2025","description":"Vietnamese PIT: Progressive brackets or simplified business tax, social/health/unemployment insurance","parameters":{"income":{"type":"number","required":true,"description":"Gross income VND"},"incomePeriod":{"type":"string","default":"yearly","options":["monthly","yearly"]},"taxMethod":{"type":"string","default":"simplified","options":["progressive","simplified"],"description":"Progressive PIT (7 brackets 5-35%) or simplified business tax (5% services)"},"dependents":{"type":"number","default":0,"description":"Number of dependents (4.4M VND deduction each)"},"vatRegistered":{"type":"boolean","default":false,"description":"VAT registered (8%)"},"weeklyHours":{"type":"number","default":40,"description":"Weekly working hours"},"paidDaysOff":{"type":"number","default":12,"description":"Annual leave days"}},"example":"/v1/calculate/vn?income=500000000&taxMethod=simplified"}