GSTR-1 is a sales return that is required to be filed by every GST-registered person or entity. Sandbox API for getting advance tax(AT) details for a return period of the authenticated taxpayer.


Get advance tax details for a return period for the authenticated taxpayer (gstin) for the particular year and month.


HTTP MethodResource

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Follow the below guidelines to pass GSTIN, year & month for getting advance tax details.

Path Parameters

gstinstring15-character alpha-numeric unique identifier assigned to business entities registering under the GST regime22AAAAA0000A1Z5
yearstringYear for which Advance Tax needs to be fetched.2020
monthstringMonth for which Advance Tax needs to be fetched.01

Once the values are added, Your curl will look something like this

curl --request GET \
     --url \
     --header 'Authorization: xxxxxxxxxx' \
     --header 'accept: application/json' \
     --header 'x-api-key: xxxxxxxxxx' \
     --header 'x-api-version: 1.0'


Test Environment Not Available


The response includes the following advance tax details below

flagstringInvoice StatusN - No Action
chksumstringInvoice Check sum valueAflJufPlFStqKBZ
posstringPlace of Supply (statecode)04
sply_tystringSupply TypeINTER / INTRA
diff_percentnumDifferential percentage.65 (65%)
list{itms}Item DetailsRefer to the table below

Item Details

rtnumRate of Invoice10
ad_amtnumAdvance received10001.00
iamtnumIGST Amount as per invoice650.00
camtnumCGST Amount as per invoice650.00
samtnumSGST Amount as per invoice650.00
csamtnumCess Amount as per invoice650.00

Response Caching

Response caching is not available for this API. Learn more about our response caching mechanism here

Wallet Charges

Since GSTR-1 AT is not a Paid API, no wallet charge will take place.


This API is currently in major version 1.0. Refer to our versioning policies here