India tax glossary

What is GST?

Goods and Services Tax in India - defined from official CBIC sources, with invoice mechanics and scope boundaries.

In brief

GST stands for Goods and Services Tax. CBIC describes it as a destination-based tax on consumption of goods and services, with tax collected through the supply chain and eligible prior-stage tax available as credit under the applicable rules. The correct tax component, rate, place of supply, classification and invoice treatment depend on the transaction and current law.

01

How does GST work?

A registered supplier generally charges the applicable GST on a taxable supply and reports it through the prescribed process. The destination principle means tax accrues according to the place of consumption or place of supply rather than merely where the supplier originated the transaction.

Input tax credit can reduce cascading when its legal conditions are met. A billing tool can calculate entered amounts and retain invoice fields, but it cannot decide credit eligibility or the correct treatment from an invoice total alone.

  • Identify the supplier and recipient.
  • Classify the goods or services.
  • Determine place of supply and transaction type.
  • Apply the verified rate and document requirements.

Use the maintained field checklist in the GST invoice format.

02

What are CGST, SGST, UTGST and IGST?

For an intra-state taxable supply, the applicable amount is commonly split between Central GST and State GST, or Union Territory GST where relevant. Integrated GST commonly applies to an inter-state taxable supply. The actual place-of-supply rules determine the classification.

Do not choose the split from postal addresses alone. Confirm registration, place of supply, delivery context and the rule that applies to the goods or services before issuing the tax invoice.

  • CGST: central component.
  • SGST: state component.
  • UTGST: union-territory component where applicable.
  • IGST: integrated component for applicable inter-state supplies.

Run confirmed arithmetic with the GST calculator.

03

What belongs on a GST tax invoice?

CBIC Rule 46 lists particulars including supplier identity and GSTIN, a financial-year-unique serial number, issue date, recipient detail, classification and description, quantity where relevant, values, tax rate and amount, place of supply for inter-state transactions and other applicable declarations.

The exact fields vary with recipient and transaction conditions. Use the maintained official rule rather than assuming that a generic invoice layout is sufficient.

  • Supplier and recipient identity
  • Unique number and issue date
  • HSN or service classification and description
  • Taxable value, rate and tax amount
  • Place of supply and required declarations

Review the product context in GST invoicing.

04

Worked example: arithmetic after classification

Assume a reviewer has confirmed an intra-state taxable value of ₹100,000 and a total GST rate of 18% for the specific transaction. The arithmetic produces ₹9,000 CGST and ₹9,000 SGST, for an invoice total of ₹118,000.

The example does not establish that 18% or an intra-state split applies elsewhere. Classification, exemption, reverse charge, place of supply and other facts must be confirmed first.

  • Taxable value: ₹100,000
  • Illustrative CGST: ₹9,000
  • Illustrative SGST: ₹9,000
  • Illustrative total: ₹118,000

Separate IRP reporting through what is e-invoicing.

05

How does GST relate to e-invoicing?

GST invoicing and e-invoicing are connected but not identical. A GST tax invoice must contain the applicable particulars. E-invoicing adds the IRP reporting and validated IRN or QR-code process for taxpayers and documents within the current mandate.

A business can have GST invoice obligations without every transaction entering the e-invoicing flow. Confirm current applicability, thresholds, exclusions and reporting time limits from official sources.

  • GST invoice: tax document particulars.
  • E-invoicing: applicable IRP reporting process.
  • IRN: identifier returned after successful registration.

Understand goods classification in what is an HSN code.

Primary sources

Check the current official position.

Continue in context

delivery challan format.

Common questions

Clear answers without the detour.

What is the full form of GST?

GST stands for Goods and Services Tax. In India, CBIC describes it as a destination-based tax on consumption of goods and services. The tax applies through the supply chain under the governing Acts and rules, with eligible input credit subject to conditions. The acronym alone does not identify the rate or treatment of a particular transaction.

What is the difference between CGST, SGST and IGST?

CGST is the central component and SGST the state component commonly applied to an intra-state taxable supply; UTGST can apply in relevant union territories. IGST commonly applies to an inter-state taxable supply. The actual classification follows place-of-supply and transaction rules, so supplier and recipient addresses alone should not be used as the complete test.

Does every GST invoice require e-invoicing?

No. E-invoicing applies only to taxpayers and document types within the current mandate and exclusions. GST tax-invoice requirements and IRP reporting are related but distinct. Confirm the taxpayer's turnover context, registration, transaction and current effective rules. When e-invoicing applies, the reporting process adds a validated IRN and QR-code outcome to the invoice workflow.

Can the GST calculator determine the correct rate?

No. It performs arithmetic from the taxable amount, rate and supply type entered by the user. It cannot classify goods or services, determine place of supply, test an exemption, decide reverse-charge treatment or confirm registration facts. Verify those inputs from current official guidance or a qualified adviser before using the result on a tax document or return.

Which official source lists GST invoice fields?

Rule 46 of the Central Goods and Services Tax Rules lists tax-invoice particulars. CBIC publishes the invoice rules and the consolidated rules. Because amendments and transaction-specific provisions can alter requirements, verify the maintained official text and effective date for the actual supply rather than relying only on a copied checklist or a generic downloadable invoice format.