Components of GST in India: A Complete Guide for Business Owners

Start by determining the place of supply under the applicable GST rules, then compare it with the location of the supplier. The invoice address alone does not settle every case; special rules can apply to services, goods involving installation, exports, imports, and other transaction types.

Sale within the same state

A taxable supply where the supplier’s location and place of supply are in the same state generally attracts CGST and SGST. For example, a supplier in Maharashtra selling goods for delivery in Maharashtra will commonly charge both components, assuming no special rule changes the treatment.

Sale across state boundaries

A taxable supply where the supplier’s location and place of supply are in different states generally attracts IGST. For example, a Maharashtra supplier selling goods to a customer in Gujarat will commonly charge IGST, subject to the applicable place-of-supply and transaction rules.

Supply within a Union Territory

For relevant taxable supplies within a Union Territory where UTGST applies, CGST and UTGST generally apply together. Check the legal status of the territory and the specific transaction before selecting the components.

Imports and exports

Imports are generally treated as inter-state supplies for IGST purposes, with customs-related rules also relevant to imported goods. Exports are generally treated as zero-rated supplies, subject to statutory conditions and documentation. Zero-rated does not simply mean the same thing as exempt: eligible exporters may be able to claim refunds or use other prescribed procedures.

If your transaction is unusual or high-value, confirm the place-of-supply treatment with a qualified tax professional or the applicable GST guidance before issuing the invoice.

Assume your business sells taxable goods within the same state for a taxable value of Rs. 10,000, and the applicable GST rate is 18%. If the rate is split equally between CGST and SGST, the calculation is:

GST amount = Taxable value × GST rate ÷ 100

Total GST = Rs. 10,000 × 18 ÷ 100 = Rs. 1,800

CGST = Rs. 10,000 × 9 ÷ 100 = Rs. 900

SGST = Rs. 10,000 × 9 ÷ 100 = Rs. 900

Invoice total = Rs. 10,000 + Rs. 1,800 = Rs. 11,800

For an otherwise comparable inter-state supply with an applicable IGST rate of 18%, the invoice would generally show IGST of Rs. 1,800 rather than separate CGST and SGST amounts. This example illustrates the calculation only; verify the correct rate and classification for the actual goods or services.

Use a GST calculator as a cross-check, not as a substitute for confirming the correct rate, taxable value, and transaction treatment.

Pricing and quotations

State whether your quoted price includes GST or whether GST will be added. Apply the correct rate and tax components so customers can understand the final amount.

Invoices and accounting

Use the required invoice particulars, identify the appropriate tax component, and reconcile invoices with your accounting records and returns.

Input tax credit

If you are eligible, ITC can help offset output GST liability. Claim it only when the legal conditions are met, and maintain valid documents and reconciliations. ITC eligibility and utilisation are subject to restrictions and statutory conditions.

Cash-flow planning

GST collected from customers is not simply free working capital. Track the tax payable, eligible credits, due dates, and any disputed or unreconciled invoices so you can set aside funds for compliance.

Selling across India

Before taking orders from another state, check place-of-supply treatment, registration implications, invoice settings, shipping records, and whether any special rule applies.

Starting a new business

Build tax checks into your quotation, billing, bookkeeping, and month-end process from the beginning. Ask a tax professional to review your setup if you are unsure about registration or classification.

Input tax credit allows an eligible registered business to use qualifying GST paid on business inputs against output tax liability, subject to the law. The credit is not automatic simply because GST appears on a purchase invoice. You must meet applicable conditions, hold prescribed documents, and account for blocked credits, reversals, and matching or reporting requirements where relevant.

Last reviewed: 15 October 2026

ITC utilisation rules are technical and may depend on the tax head and current law. Verify the current statutory order before filing or making a tax adjustment.

• Charging CGST and SGST on a transaction that should be treated as inter-state, or charging IGST when intra-state treatment applies.
• Assuming the customer’s billing address alone determines the place of supply.
• Using an outdated GST rate or incorrect HSN/SAC classification.
• Claiming ITC without checking eligibility, supporting documents, restrictions, and reconciliations.
• Treating exempt, nil-rated, and zero-rated supplies as interchangeable terms.
• Failing to reconcile sales invoices, purchase records, credit notes, and GST returns.
• Spending GST collected from customers without reserving funds for the liability due.
• Assuming every product or service follows the same place-of-supply rule.

• Confirm whether registration is required for your business and review any applicable threshold or compulsory-registration rule.
• Maintain correct product or service classifications and check current GST rates using official sources.
• Configure billing software to select the appropriate tax component based on the transaction.
• Check that invoices contain the prescribed details and that credit notes and debit notes are recorded correctly.
• Reconcile purchase invoices and assess ITC eligibility before claiming credit.
• Track return and payment due dates and retain records for the required period.
• Review inter-state, e-commerce, export, import, and special-category transactions separately.
• Seek professional advice where the place of supply, ITC, cess, or registration treatment is unclear.

Managing GST is only one part of running a business. You also need to pay suppliers, maintain inventory, meet payroll, and invest in equipment or expansion. Keeping track of your GST liabilities and eligible input tax credit can help you plan these expenses and understand your available working capital.

If you need additional funding for eligible business expenses, a Bajaj Finance Business Loan may be worth considering. Here are some key features to know:

• Loan amount: Borrow from Rs. 2 lakh to Rs. 80 lakh, subject to eligibility and approval.
• Repayment tenure: Choose a tenure ranging from 12 months to 96 months, depending on the loan offer.
• Loan options: Choose from Term Loan, Flexi Dropline Loan, and Flexi Hybrid Loan options, depending on your funding and repayment needs.
• Collateral: No collateral or guarantor is required, subject to the applicable loan terms.

Before applying, assess your funding requirement, upcoming GST payments, and expected cash inflows to determine an affordable repayment amount. You can review the business loan eligibility criteria, and estimate your instalments using the Business Loan EMI calculator.

Remember, borrowing does not reduce your GST liability or replace your tax filing and payment obligations. Review the applicable interest rate, processing fees, other charges, and repayment terms before accepting a loan offer.

• Click the 'Check Loan Offer' button to open the online application form.
• Enter basic details, including Name, PAN, Date of Birth, PIN Code, and Business details, and click 'CONTINUE'.
• Complete banking verification and continue.
• View your offer details, select the loan type — Term Loan, Flexi Dropline Loan, or Flexi Hybrid Loan — and choose the repayment tenure.
• Review the details and submit the business loan application.