
GST registration is mandatory once your aggregate turnover crosses ₹40 lakh (goods) or ₹20 lakh (services). But even before that, voluntary registration unlocks Input Tax Credit (ITC), inter-state trade and marketplace onboarding.
Documentation is the single biggest reason for rejection. Ensure your PAN, Aadhaar, address proof and bank statement are dated within the last 60 days and the names match exactly.
For companies, DSC of the authorised signatory is mandatory. For proprietorships, Aadhaar OTP authentication now finishes in under 5 minutes.
Choose the right principal place of business — this decides your jurisdictional officer. A well-drafted rent agreement plus a utility bill is the gold-standard combination.
Post-GSTIN, don't forget to enable e-invoicing (if turnover > ₹5 Cr), configure HSN codes, and add authorised representative details.

