Registrations & IDs
PAN, Aadhaar–PAN link, TAN, GSTIN, CIN, LLPIN, DIN, Udyam, IEC, FSSAI, trademark and ISO: formats, benefits and how to get each.
12 guides · read in order or jump to what you need
01
PAN & TAN
PAN structure, holder types, PAN-Aadhaar link, and TAN for TDS.
02
Aadhaar–PAN Link
Who must link, how to link, the ₹1,000 fee, exemptions and what an inoperative PAN means.
03
GSTIN
How a GSTIN is built and checked.
04
CIN, LLPIN & DIN
Identifiers issued by the Ministry of Corporate Affairs.
05
Udyam Number
The Udyam Registration Number format.
06
IEC (Import Export Code)
The DGFT code for importers and exporters, and its yearly update.
07
FSSAI Food Licence
Registration vs state vs central licence, fees, process, renewal and annual returns.
08
Shop & Establishment Registration
The state registration for shops, offices and commercial premises.
09
Professional Tax Registration
PTEC and PTRC: who registers, amounts and returns, with Maharashtra and Karnataka examples.
10
Trademark: Benefits & Registration
Why register a trademark, TM vs ®, classes, fees, process and validity.
11
ISO Certification
ISO standards, how certification works, validity, cost factors and MSME support.
12
Which licences and registrations does my business need?
A checklist of registrations by business activity, staff size and industry, with when each one becomes compulsory.