CGST, SGST, IGST & UTGST — The Four Faces of GST Explained

GST isn't a single tax collected by one authority — India's dual GST structure splits it into CGST, SGST, IGST and UTGST depending on who is collecting it and where the transaction takes place. Understanding this split is essential for correctly invoicing and filing returns.

Why India Has a Dual GST Structure

Because India is a federal country with a constitutional division of powers, both the Union (Centre) and the States have the power to tax the supply of goods and services, following the 101st Constitutional Amendment. Rather than choosing one level of government to collect all GST and redistribute it, India's model lets both levels collect tax simultaneously on intra-state transactions, and lets the Centre collect a combined tax on inter-state transactions for later apportionment.

CGST — Central GST

Levied by the Central Government under the CGST Act, 2017, on the intra-state (within the same state or Union Territory) supply of goods and services. Revenue from CGST goes entirely to the Central Government.

SGST — State GST

Levied by the respective State Government under its own SGST Act, on the same intra-state supply, simultaneously with CGST. Revenue from SGST goes entirely to that particular state government. CGST and SGST are always charged at equal rates on a given transaction — for example, on an 18% GST item, it's 9% CGST + 9% SGST.

UTGST — Union Territory GST

Levied instead of SGST for supplies within a Union Territory that does not have its own legislature (such as Chandigarh, Lakshadweep, Daman and Diu, and the Andaman & Nicobar Islands). Union Territories with their own legislature (Delhi, Puducherry, Jammu & Kashmir) apply SGST instead of UTGST, since they have state-like taxation powers.

IGST — Integrated GST

Levied by the Central Government under the IGST Act, 2017, on inter-state supplies of goods and services, and on all imports into India (in addition to Customs Duty). IGST is set at a rate equal to the sum of applicable CGST + SGST for that good/service, so the total tax burden remains the same whether a transaction is intra-state or inter-state.

The Centre collects IGST and, through a settlement mechanism, apportions the state's share to the destination state — ensuring the destination-based principle of GST (tax accrues to the state of consumption, not the state of origin) is maintained even for inter-state trade.

How ITC Set-Off Works Across These Taxes

The CGST Act prescribes a specific order for utilising ITC across the different credit ledgers:

•      IGST credit: must first be used to pay IGST, then any remaining balance can be used for CGST, then for SGST/UTGST, in that order

•      CGST credit: can be used for CGST liability first, then for IGST liability (never for SGST/UTGST directly)

•      SGST/UTGST credit: can be used for SGST/UTGST liability first, then for IGST liability (never for CGST directly)

•      CGST and SGST/UTGST credit balances can never be directly cross-utilised against each other — IGST always acts as the bridge

💡  Illustration — Intra-State vs Inter-State Split

A dealer in Maharashtra sells goods worth ₹1,00,000 to a buyer in Maharashtra at 18% GST → CGST ₹9,000 + SGST ₹9,000 = ₹18,000 total. The same dealer sells identical goods worth ₹1,00,000 to a buyer in Karnataka → IGST ₹18,000 (the same total tax amount, but structured differently since it's an inter-state supply).

💡  Illustration — ITC Cross-Utilisation Order

A business has ₹5,000 of IGST credit, ₹3,000 of CGST credit, and ₹3,000 of SGST credit available, and owes ₹4,000 CGST and ₹4,000 SGST this month. It must first use the ₹5,000 IGST credit against CGST and SGST liability (say ₹2,000 each), then use its own CGST credit (₹3,000) to fully clear the remaining CGST, and its own SGST credit (₹3,000) to fully clear the remaining SGST — it cannot use leftover CGST credit to pay SGST or vice versa.

⚠  Common Mistakes to Avoid

•  Charging CGST+SGST on an inter-state transaction (or vice versa) — this is a common invoicing error that requires correction and can delay the buyer's ITC claim

•  Trying to set off CGST credit against an SGST liability directly, which the law does not permit

•  Forgetting that UTGST (not SGST) applies for supplies within Union Territories without a legislature

•  Assuming the total tax rate differs between intra-state and inter-state supply of the same goods — it doesn't; only the split (CGST+SGST vs IGST) differs

Frequently Asked Questions

Q1. Can CGST be adjusted against SGST liability?

A. No, direct cross-utilisation between CGST and SGST is not permitted under the law; only IGST credit can act as a bridge between the two.

Q2. Which tax applies to imports of goods into India?

A. IGST is levied on imports (in addition to applicable Customs Duty), treating imports as a special category of inter-state supply for GST purposes.

Q3. Why does India need both CGST and SGST instead of one combined tax?

A. Because both the Centre and States constitutionally have the right to levy tax on the supply of goods and services, and this dual structure ensures both get their due share of revenue on intra-state transactions.

Q4. Is UTGST the same thing as SGST?

A. Conceptually similar (a state/UT-level tax matching CGST), but UTGST applies only to Union Territories without their own legislature, while SGST applies to states and to UTs that do have a legislature, like Delhi and Puducherry.

Q5. Does the total GST rate change depending on whether a supply is intra-state or inter-state?

A. No — the total effective rate stays the same; only the composition changes, from a CGST+SGST split for intra-state to a single IGST charge for inter-state.

Q6. How does the state ultimately receive its share of IGST collected by the Centre?

A. Through a formal settlement mechanism between the Centre and the states, based on the destination-based consumption principle, ensuring the state where goods/services are actually consumed receives its due share.

✓  Key Takeaways

•  GST splits into CGST+SGST (intra-state), IGST (inter-state/imports), and UTGST (Union Territories without a legislature)

•  CGST and SGST are always charged at equal halves of the applicable GST rate

•  IGST equals CGST + SGST combined, ensuring total tax remains consistent regardless of whether a transaction is intra- or inter-state

•  ITC set-off follows a strict hierarchy — IGST credit first bridges to CGST and SGST, but CGST and SGST credits can never be cross-utilised directly

Note: GST rates, thresholds and procedures are revised periodically by the GST Council and CBIC. This article reflects the position understood as of the GST 2.0 rate structure (effective 22 September 2025). Please verify current figures on www.gst.gov.in or with a qualified tax professional before making compliance decisions.

Disclaimer

This content is shared strictly for general information and knowledge purposes only. Readers should independently verify the information from reliable sources. It is not intended to provide legal, professional, or advisory guidance. The author and the organisation disclaim all liability arising from the use of this content. The material has been prepared with the assistance of AI tools