What Is Intra-State GST?
Intra-state GST is the tax charged when both the supplier and the place of supply fall within the same state or union territory under India’s GST framework. The tax splits equally into CGST (Central Goods and Services Tax) going to the Central Government and SGST (State Goods and Services Tax) staying with the state.
The total rate does not change. A 12% GST item attracts 6% CGST plus 6% SGST on an intra-state sale, compared to a flat 12% IGST on an inter-state sale. Section 9 of the CGST Act, 2017 and the corresponding SGST Acts of each state govern this split.
How Does Intra-State GST Work?
Place of supply decides everything. Sections 10 to 14 of the IGST Act pin down whether a transaction is intra-state or inter-state. If the supplier’s GSTIN state code and the buyer’s GSTIN state code match, CGST + SGST applies. Different state codes mean IGST.
| Factor | Intra-State (CGST + SGST) | Inter-State (IGST) |
|---|---|---|
| Supplier and buyer | Same state | Different states |
| Tax split | Half to Centre, half to state | Full amount to Centre |
| ITC cross-utilisation | CGST offsets CGST or IGST; SGST offsets SGST or IGST | IGST offsets any of the three |
| Filing impact | Reported as CGST + SGST columns in GSTR-3B | Reported in IGST column |
One thing that trips up business owners: B2C sales follow the delivery address, not the billing address. A garment store in Madhapur, Hyderabad shipping to a Telangana address charges CGST + SGST. Ship the same parcel to Vijayawada, Andhra Pradesh, and the bill must show IGST instead.
Intra-State GST Calculation Example
Here is an illustrative example. A stationery distributor in Electronic City, Bengaluru sells office supplies worth Rs.2,14,500 to a retailer in Jayanagar, Bengaluru at 18% GST.
| Component | Rate | Amount |
|---|---|---|
| Taxable value | Rs.2,14,500 | |
| CGST | 9% | Rs.19,305 |
| SGST | 9% | Rs.19,305 |
| Invoice total | Rs.2,53,110 |
Both parties hold Karnataka GSTINs, so the sale is intra-state. The distributor deposits Rs.19,305 each as CGST and SGST while filing GSTR-1. The buyer claims input tax credit of Rs.19,305 in each ledger, provided the distributor files on time and the credit reflects in GSTR-2B.
Why Does Intra-State GST Matter for Indian Businesses?
ITC utilisation is where most confusion sits. CGST credit can offset a CGST liability or an IGST liability, but it cannot touch SGST. The reverse holds for SGST credit. Across 8,000+ Invoice clients, the pattern we notice most is owners who adjust CGST credit against SGST payable in their books and then wonder why the portal rejects the offset during return filing.
Businesses operating across multiple states need a separate GSTIN for each state. A bakery chain with outlets in Salt Lake, Kolkata and Patna holds two GSTINs: one for West Bengal, one for Bihar. Sales within West Bengal attract CGST + SGST; transfers to the Patna outlet count as inter-state stock transfers under IGST. Multi-state operations also mean separate salary structures per location, so it helps to run the numbers through a CTC calculator before budgeting across branches. Use the GST return filing checklist to keep track of which GSTIN filed what and when.
How Does Petpooja Invoice Handle Intra-State GST?
Petpooja Invoice reads the state code from the buyer’s GSTIN and applies CGST + SGST or IGST without manual selection. The tax split carries through to e-invoicing and Tally sync, so what shows on the invoice is what lands in the books. Businesses that operate across states get the correct tax type on every bill without switching anything manually.
Frequently Asked Questions
Intra-state GST splits the tax into CGST and SGST when both parties are in the same state. Inter-state GST charges a single IGST when they are in different states. Total percentage stays identical.
No. CGST credit offsets CGST or IGST only. SGST credit offsets SGST or IGST only. Cross-utilisation between CGST and SGST is not permitted.
Compare the two-digit state code in your GSTIN with the buyer’s GSTIN state code. If both match, the sale is intra-state. For B2C sales without a GSTIN, the delivery address determines place of supply.
Yes. A web design agency in Lucknow billing a client in the same state charges CGST + SGST. If the client’s GSTIN belongs to another state, IGST applies instead.
The buyer’s ITC claim will show a mismatch on the GST portal. Issue a GST credit note for the incorrect invoice, raise a fresh one with the correct CGST + SGST split, and file the amendment in GSTR-1.
No. Both go into GSTR-1 and GSTR-3B, reported under their respective tax columns.
