Categories: Tax Planning

All about 15 digit GSTIN (Goods and Services Tax Identification Number) format

Now the noise of GST will certainly come down as the GST is a reality from 1st July 2017. There are certain changes in the system. One such change is TIN of VAT regime to 15 digit GSTIN (Goods and Services Tax Identification Number). Let us see what is this number and how to identify it.

Note:– Refer my latest post “How to verify fake GST Bill and GST number?“.

What is this 15 digit GSTIN (Goods and Services Tax Identification Number)?

Earlier, whenever you buy some services or goods, then the seller used to give you the bill. In that bill, you usually find the TIN (Taxpayer Identification Number). This was unique 11 digit number allotted to each business entity which registers with the commercial tax department.

This TIN registration was mandatory for all Manufacturer/Traders /Exporters/Dealer.

Now, after the entry of GST regime, this TIN is now replaced with 15 digit GSTIN (Goods and Services Tax Identification Number).

So this 15 digit GSTIN (Goods and Services Tax Identification Number) is nothing but the replacement of TIN of VAT era.

Let me explain the same by taking an example of two bills. One bill issued prior to 1st July 2017 and another on or after 1st July 2017. The difference is as below (I am not concentrating on the rate changes of VAT to GST).

You notice from above image that earlier there used to TIN and VAT charges. Now it is replaced with GSTIN and GST charges.

What is the structure or format of 15 digit GSTIN (Goods and Services Tax Identification Number)?

GSTIN is a 15 digit unique code which is will be assigned to each taxpayer, which will be State-wise and PAN-based. The structure or format of 15 digit GSTIN (Goods and Services Tax Identification Number) will look like below.

First two Digits-The first digit of GSTIN is state code as per Indian Census 2011. The state codes are as below.

01-Jammu and Kashmir, 02-Himachal Pradesh, 03-Punjab, 04-Chandigarh, 05-Uttarakhand, 06-Haryana, 07-Delhi, 08-Rajastan, 09-UP, 10-Bihar, 11-Sikkim, 12-Arunachal Pradesh, 13-Nagaland, 14-Manipur, 15-Mizoram, 16-Tripura, 17-Meghalaya, 18-Assam, 19-West Bengal, 20-Jharkhand, 21-Orrissa, 22-Chattisgarh, 23-MP, 24-Gujarat, 25-Daman and Diu, 26-Dadar and Nagar Haveli, 27-Maharashtra, 28-Andhra Pradesh, 29-Karnataka, 30-Goa, 31-Lakshadweep, 32-Kerala, 33-Tamil Nadu, 34-Puducherry and 35-Anadaman and Nicobar Islands.

Next 10 Digits-It is the PAN number of a business entity like your shop, mall or company.

13th Digit-It indicates the number of registrations as a business entity has within a state for the same PAN. It will be an alpha-numeric number (first 1-9 and then A-Z) and will be assigned on the basis of the number of registrations a legal entity (having the same PAN) has within one state.

Let say the company ABC registered in the same state for 5 times for different businesses. In such case, this digit will be printed as 5. Let us assume, the same company registered for around 15 times, then it should be represented as F (1-9 numeric and later on 10th registration be named as A and 11th as B and so on up to Z).

Hence, a business entity can register the GSTIN within a single state for the maximum of 35 times (1-9 and later on A-Z).

14th Digit-It will be by default as Z.

15th Digit-The last digit will be a check code which will be used for detection of errors.

Beware consumers!!

Now you came to know what is GSTIN in the new regime of tax format called GST. Whenever you buy and if some one charges you GST, then make sure to check the GSTIN and its format is matching with the structure I explained above.

Many shopkeepers may simply put some random numbers and collect the tax or even they may not print their GSTIN on the bill. Hence, always check for GSTIN than blindly paying the bills.

BasuNivesh

View Comments

  • Hi sir,
    I am from west Bengal if is supply goods to different state like Bihar do I have to register a GSTIN number

    • Dear Raqib,
      If the goods and service turnover crosses beyond the specified limit, then yes you have to register.

  • When in GST Tin No 14th Character is D instead of Z which is by default as per GST laws

    • Dear Rupinder,
      If you are unable to understand the online procedure, then better to take the help of some tax experts of your area.

  • Is GST number required to be put on the purchase order and the letter head ?

    Is CIN number required to be put on invoices and purchase orders ?

    Is PAN number required to be put on invoices and purchase orders and letterheads?

  • How to identify that GST NO. which is getting printed in our bills are not fake and is completely genuine?

    • Dear Sandeep,
      If you are sure, then approach the agency to cross verify the genuinity of GSTIN.

  • How to identify SEZ Units from their GST No.s. In the case of SEZ'S if the supply is with in the state the supplier have to billed in IGST according to GST Laws.So this is difficult for us to identify whether it is Sez or not.Pls help.

  • Hello Mr. Basu, I wanted to know if there is a firm from Delhi who got railways work contract in Kerala, do we have to apply for or get a new gst number from Kerala state?

Share
Published by
BasuNivesh

Recent Posts

Gold and Silver ETF NAV Trap: Why You Just Lost 24% in 1 Day!

Are your Gold and Silver ETFs a ticking time bomb? Why ETFs crashed 24% while…

1 month ago

Parag Parikh Large Cap Fund: An Index Fund with a Brain?

Is Parag Parikh Large Cap Fund a hidden goldmine or just hype? Discover the 5…

1 month ago

IIT Topper & Doctor Trapped in Rs.14.3 Crore Digital Arrest Scam

An IIT topper and his doctor wife were duped of Rs.14.35 crore in Delhi’s biggest…

1 month ago

New NPS Exit and Withdrawal Rules 2025: What Changed and Why

Understand the new NPS exit and withdrawal rules 2025, higher lump sum limits, lower annuity…

2 months ago

Taxation of Gold and Silver in India in 2026 Explained Simply

A simple and updated guide to taxation of gold and silver in India in 2026…

2 months ago

NPS MSF Framework – Meaning, Rules, Benefits and Usage

Explains NPS MSF Framework, eligibility, migration rules, fund selection, risks, and whether long-term investors should…

2 months ago