curl --request POST \
  --url https://api.ai2fin.com/api/tax/calculate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "amount": 123,
  "gstIncluded": true,
  "gstRate": 123,
  "countryCode": "<string>",
  "taxType": "<string>"
}'

{
  "success": true,
  "data": {
    "amount": 123,
    "baseAmount": 123,
    "gstAmount": 123,
    "gstIncluded": true,
    "gstRate": 123,
    "input": {
      "amount": 123,
      "gstIncluded": true,
      "gstRate": 123,
      "countryCode": "<string>",
      "taxType": "<string>"
    }
  }
}