Aggregate Turnover Under GST: Thresholds, Inclusions, and Errors

Aggregate turnover under GST is the total value of all outward supplies made across India under a single PAN in a financial year, running from April 1 to March 31. It’s defined in Section 2(6) of the CGST Act, 2017, and it’s the number the law uses to decide whether you must register, whether you can pay tax under the Composition Scheme, and how much annual filing you owe. Get the figure wrong and you can find yourself unregistered when registration was mandatory, or stuck in a scheme you no longer qualify for.1Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 2

What Goes Into the Total

Four categories of outward supplies add up to your aggregate turnover:

  • Taxable supplies of goods or services at any positive rate.
  • Exempt supplies, including nil-rated and non-taxable supplies. The sale value counts even though no tax is collected.
  • Exports, which are zero-rated. The full invoice value goes in.
  • Inter-state supplies, including transfers between your own branches registered in different states.

The rate of tax on a supply is irrelevant to whether it counts. A ₹5 lakh exempt sale increases your aggregate turnover exactly the same way a ₹5 lakh taxable sale does. Business owners who mentally filter out zero-rated or exempt revenue when estimating their size are the ones who cross a threshold without noticing.

The Non-Taxable Supplies Trap

Section 2(47) defines “exempt supply” to include “non-taxable supply,” meaning any supply not leviable to tax under the CGST or IGST Acts.1Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 2 That sweeps in the goods currently outside GST: petroleum crude, petrol, diesel, natural gas, aviation turbine fuel, and alcoholic liquor for human consumption. Revenue from selling any of these still feeds your aggregate turnover.

A retailer with ₹25 lakh in taxable sales and ₹20 lakh in alcohol sales has an aggregate turnover of ₹45 lakh, not ₹25 lakh. That distinction can flip registration and Composition Scheme eligibility.

What Stays Out

Three items are deliberately kept out so the figure reflects business size rather than tax handling.

The GST taxes themselves are stripped out. CGST, SGST, UTGST, IGST, and Compensation Cess do not sit inside the turnover figure; you report supply values before tax.2GST Council. Aggregate Turnover in GST

Inward supplies on which you pay tax under the Reverse Charge Mechanism are also excluded. In RCM transactions, such as certain services received from outside India or notified goods transport services, you remit tax to the government, but the underlying purchase is your inward activity, not outward supply.2GST Council. Aggregate Turnover in GST

Post-supply discounts can reduce turnover, but only on strict conditions under Section 15(3)(b): the discount must be part of an agreement made at or before the time of supply and linked to specific invoices, and the recipient must have reversed the corresponding input tax credit.3Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 15 A discount you decide to give after the fact, with no prior agreement, does not reduce the number.

One PAN, One Turnover

Aggregate turnover attaches to your Permanent Account Number, not to each GST registration. Three storefronts in three states with three GSTINs are one entity for this calculation, and their combined sales form the total.1Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 2

Stock transfers between your own branches in different states are inter-state supplies between distinct persons sharing a PAN, and their value adds to aggregate turnover.2GST Council. Aggregate Turnover in GST Businesses that move significant inventory between locations sometimes underestimate their turnover by leaving these internal movements out.

Job work follows a similar logic. If you send raw materials to a job worker who processes and returns them, the finished goods supplied from the job worker’s premises are treated as the principal’s supply. The full value enters your aggregate turnover. The job worker counts only the processing charges earned.

Registration Thresholds

The base statutory threshold under Section 22 is ₹20 lakh. Once your aggregate turnover crosses that in a financial year, you must register in every state from which you make taxable supplies.4Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 22

Enhanced thresholds apply for certain categories:

  • ₹40 lakh for suppliers dealing exclusively in goods in most states. Earning interest or discount income on deposits, loans, or advances does not disqualify you from being treated as an exclusive goods supplier.4Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 22
  • ₹20 lakh for service providers and mixed suppliers in most states.
  • ₹10 lakh for all suppliers in Manipur, Mizoram, Nagaland, and Tripura, which remain special category states for registration.4Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 22

If you operate across multiple states, the lowest applicable threshold governs the whole entity. A goods supplier with branches in Maharashtra and Manipur hits mandatory registration at ₹10 lakh, not ₹40 lakh.

Selling Through E-Commerce Platforms

Sellers using platforms like Amazon or Flipkart face a stricter standard. Under Notification 34/2023-CT, small sellers making only intra-state supplies through e-commerce can qualify for an exemption from mandatory registration, but only if they make no inter-state sales, supply through an e-commerce operator in a single state, and complete a PAN-based enrolment on the GST common portal. The usual ₹40 lakh (goods) or ₹20 lakh (services) thresholds then apply.

A single inter-state shipment through an e-commerce operator triggers mandatory registration with no turnover exemption at all. Marketplace sellers who ship across state lines cannot rely on the general thresholds.

Composition Scheme Eligibility

The Composition Scheme lets small businesses pay a flat percentage of turnover instead of collecting GST on each invoice. Section 10 sets a base eligibility ceiling of ₹50 lakh in aggregate turnover for the preceding financial year, with the government authorized to raise it up to ₹1.5 crore by notification. The enhanced ₹1.5 crore limit is currently in effect for suppliers of goods.5Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 10

Service providers not eligible under the main composition provision can opt for the Section 10(2A) scheme, paying tax at a rate not exceeding 3% of turnover, provided their aggregate turnover in the preceding financial year did not exceed ₹50 lakh.5Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 10

The scheme is barred outright for manufacturers of certain notified goods, regardless of turnover: ice cream and other edible ice, pan masala, and tobacco and manufactured tobacco substitutes.6Central Board of Indirect Taxes and Customs. Frequently Asked Questions on Composition Levy The government can notify further exclusions.

Eligibility is not locked in for the year. The moment your aggregate turnover crosses the applicable limit during a financial year, you must exit the scheme and switch to regular filings. From that date you issue standard tax invoices, collect GST at the applicable rates, and file regular returns. Watching the number in real time, not just at year-end, is the only way to catch the transition point before it becomes a compliance problem.

Annual Return and Reconciliation Thresholds

Aggregate turnover also shapes annual filing. Registered taxpayers with turnover up to ₹2 crore in a financial year are currently exempt from filing the GSTR-9 annual return for that year. Above ₹2 crore, the annual return is mandatory.

At ₹5 crore and above, you must also prepare and self-certify a GSTR-9C reconciliation statement, which reconciles your audited financial statements with the returns filed during the year. For FY 2025-26, that reconciliation statement is due by December 31, 2026.

What Happens If You Get the Number Wrong

Under-reporting aggregate turnover is not a paperwork issue. The most common failure is continuing to operate without registration after crossing the threshold. Section 122 of the CGST Act imposes a penalty of ₹10,000 or an amount equal to the tax that should have been paid, whichever is higher.7Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 122 For a business that operated unregistered for months, the tax-equivalent penalty can far exceed the ₹10,000 floor.

On top of the penalty, the unpaid tax itself becomes due, along with interest at up to 18% per annum for the period of delay.8Central Board of Indirect Taxes and Customs. Central Goods and Services Tax Act 2017 – Section 50 Where tax evasion exceeds ₹5 crore and is found to be willful, criminal prosecution becomes possible, carrying imprisonment of six months to five years along with a fine.

If your aggregate turnover is anywhere near a threshold, the safer course is to register early rather than gamble on the calculation being exact.