- GSTIN: A unique Goods and Services Tax Identification Number assigned to registered taxpayers
- ARN: Application Reference Number used to track the status of a GST registration application
- UIN: Unique Identity Number issued to certain entities exempt from GST registration requirements
- AATO: Annual Aggregate Turnover used to determine GST compliance and return filing obligations
- OTP: A One-Time Password sent to a registered mobile number for authentication and verification
Written by : Knowledge Centre Team
2026-07-07
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