Generate E-Invoice API

Do you want an API to generate E-Invoices? You are in the right place.

The Government of India through the National Informatics Center (NIC) has provided taxpayers with Application Programming Interface (API) for generating E-Invoices. The Government allows direct access to the APIs only for taxpayers with annual aggregate turnover above Rs 500 Crore. Other taxpayers have to g through registered GSP and ERP providers. GSTZen is a registered ERP and provides simple easy to use APIs on top of the Government’s APIs. Using GSTZen, you can get started and generate E-Invoices in minutes.

Getting started to use GSTZen’s E-Invoice APIs

Firstly, review GSTZen’s documentation on How to post an E-Invoice through GSTZen API
Create E-Invoice JSON as per the schema provided by NIC. For sample E-Invoice JSONs for different types of Invoice refer to Sample E-Invoice JSONs.
Checkout GSTZen’s video tutorial on how to generate E-Invoice using API
Test the API calls in Postman or curl. Check out E-Invoice generation sample programs in different programming languages

Sandbox GSTINs and Credentials

To help you get started quickly, you may use the following demo GSTINs. For all these GSTINs pass the HTTP header field named Token with token value as de3a3a01-273a-4a81-8b75-13fe37f14dc6

01AADCG4992P1Z7 – JK
03AADCG4992P1Z3 – PB
04AADCG4992P1Z1 – CH
05AADCG4992P1ZZ – UA
06AADCG4992P1ZX – HR
07AADCG4992P1ZV – DL
08AADCG4992P1ZT – RJ
09AADCG4992P1ZR – UP
10AADCG4992P1Z8 – BR
18AADCG4992P1ZS – AS
19AADCG4992P1ZQ – WB
20AADCG4992P1Z7 – JH
21AADCG4992P1Z5 – OR
22AADCG4992P1Z3 – CG
23AADCG4992P1Z1 – MP
24AADCG4992P1ZZ – GJ
27AADCG4992P1ZT – MH
29AADCG4992P1ZP – KA
30AADCG4992P1Z6 – GA
32AADCG4992P1Z2 – KL
33AADCG4992P1Z0 – TN
36AADCG4992P1ZU – TS
37AADCG4992P2ZR – AP

Generating E-Invoices through APIs on Production (Going live)

After you have completed your testing and are ready to go live, complete the following steps

Sign up for a new GSTZen Account. If you are a software provider you can manage all your customers in a single GSTZen Account. Or, you may ask your clients to sign up for their individual GSTZen accounts.
Add the GSTIN number in your account.
Register in Government’s E-Invoice Portal https://einvoice1.gst.gov.in, create an API username and password and mark GSTZen as your ERP provider, and provide the details to GSTZen. Refer to Creating E-Invoice API Login Credentials for detailed steps.
Use the correct authentication token in your software application and start generating E-Invoices.