Section 77 of CGST Act: Tax Wrongfully Paid as Intra-State or Inter-State Supply

Section 77 of the Central Goods and Services Tax Act, 2017 provides relief when a registered person pays GST under the wrong tax head because a supply was treated as intra-State instead of inter-State, or vice versa. The provision works with Section 19 of the IGST Act and Rule 89(1A) of the CGST Rules.

In simple terms: if CGST plus SGST/UTGST was paid on a supply later found to be inter-State, the wrongly paid tax can be refunded after the correct IGST is paid. If IGST was paid on a supply later found to be intra-State, the corresponding IGST refund is governed by Section 19 of the IGST Act, while Section 77(2) protects against interest on the CGST plus SGST/UTGST that becomes payable.

Text and meaning of Section 77

Section 77(1) - intra-State supply later held to be inter-State

Where a registered person has paid Central tax and State tax, or Central tax and Union territory tax, by treating a transaction as an intra-State supply, but the transaction is subsequently held to be an inter-State supply, the taxes paid under the wrong heads are refundable in the prescribed manner and subject to the prescribed conditions.

Section 77(2) - inter-State supply later held to be intra-State

Where integrated tax was paid by treating a transaction as an inter-State supply, but it is subsequently held to be an intra-State supply, no interest is payable on the Central tax and State tax, or Central tax and Union territory tax, that becomes payable because of the correction.

What does "subsequently held" mean?

CBIC Circular No. 162/18/2021-GST clarifies that the expression is not confined to a finding by a tax officer or appellate authority. It also covers a case in which the taxpayer later discovers the classification error on its own. In either situation, the taxpayer must pay the tax under the correct head before claiming the refund available for the tax paid under the wrong head.

Refund procedure under Rule 89(1A)

Identify whether the supply was wrongly treated as intra-State or inter-State.
Pay the applicable GST under the correct tax head.
File the refund application electronically in FORM GST RFD-01 on the GST common portal.
Provide the prescribed transaction details and supporting evidence showing the original tax payment and the subsequent payment under the correct head.

Time limit for refund

Rule 89(1A) provides a two-year period counted from the date of payment of tax under the correct head. For the transitional cases in which the correct tax had already been paid before Rule 89(1A) came into force on 24 September 2021, the rule provided two years from that date. Taxpayers dealing with an older claim should verify limitation and any applicable judicial or statutory relief before filing.

Section 77 and Section 19 of the IGST Act

Original treatment	Correct treatment	Key consequence
Intra-State: CGST + SGST/UTGST paid	Inter-State: IGST payable	Refund of wrongly paid CGST + SGST/UTGST under Section 77(1), subject to Rule 89(1A); interest protection on correct IGST is addressed by Section 19(2) of the IGST Act.
Inter-State: IGST paid	Intra-State: CGST + SGST/UTGST payable	Refund of wrongly paid IGST is addressed by Section 19(1) of the IGST Act; Section 77(2) provides that interest is not required on the corresponding CGST + SGST/UTGST payable.

Important restriction on credit-note adjustment

CBIC Circular No. 162/18/2021-GST clarifies that the special refund mechanism under Section 77 of the CGST Act / Section 19 of the IGST Act is not available where the taxpayer has already adjusted the tax through a credit note under Section 34 of the CGST Act for the same transaction.

Practical example

A supplier treats a transaction as an intra-State supply and pays CGST and SGST. It later discovers that the place-of-supply rules make the transaction an inter-State supply. The supplier pays the correct IGST. Subject to the statutory conditions and limitation period, the CGST and SGST paid under the wrong heads may then be claimed as refund through RFD-01.

Related provision: Section 77 should be read together with the place-of-supply provisions applicable to the transaction, Section 19 of the IGST Act and Rule 89(1A) of the CGST Rules.

Official references

CBIC Circular No. 162/18/2021-GST dated 25 September 2021

CBIC - CGST Rules, including Rule 89

GST Common Portal - refund filing and taxpayer services

This page explains the statutory provision for general legal information. Application of GST place-of-supply and refund rules depends on the facts of the transaction and the law applicable to the relevant tax period.