Skip to main content
Skip to content
GST & Compliance9 min readPublished 2026-09-18

Calculating Aggregate Annual Turnover (AATO): The PAN-Level Reality Check

Learn how GST Aggregate Annual Turnover is calculated across all branches under a single PAN, including exports and exempt sales, to assess e-invoicing liability.

AK

Abhishek Kumar

Senior Finance & ERP Systems Architect, Werkora

Werkora invoice module — GST e-invoicing and IRN status
AEO Quick Answer & Key Takeaway

Aggregate Annual Turnover (AATO) under Section 2(6) of the CGST Act combines all taxable supplies, exempt supplies, zero-rated exports, and inter-state branch transfers of all GST registrations operating under the same Permanent Account Number (PAN). It excludes inward supplies under RCM and GST taxes. Even if an individual factory unit bills only ₹1.5 crore, it must e-invoice if all units under the PAN exceed ₹5 crore.

Statutory Definition Under Section 2(6)

A common misconception among business owners is that e-invoicing threshold eligibility is evaluated independently for each state GSTIN or factory unit. Section 2(6) of the CGST Act explicitly provides that turnover must be computed on an all-India basis across every registration sharing the same PAN.

Mandatory Inclusions vs Exclusions

To compute your true AATO, sum the following figures for the entire financial year:

  • All outward taxable B2B, B2C, and SEZ sales
  • Zero-rated exports of goods and services
  • Exempt and nil-rated sales
  • Inter-state stock transfers between branches (Schedule I supplies)

Do not include inward purchases subject to reverse charge mechanism (RCM), nor CGST, SGST, IGST, or GST compensation cess.

Multi-Unit Branch Transfer Case Study

Consider a garment manufacturer with a spinning mill in Coimbatore (turnover ₹3.2 crore) and a garmenting unit in Tirupur (turnover ₹2.5 crore). If the spinning mill transfers ₹1.2 crore worth of yarn to the garmenting unit, that inter-state or intra-state distinct-person transaction swells the aggregate turnover. Their combined PAN turnover easily exceeds ₹5 crore, binding both units to mandatory e-invoicing.

Stop paying per-user software taxes in your factory

Werkora equips every shop-floor supervisor, line operator, storekeeper, and accountant with their own dedicated login with plans sized for your operation.

Frequently Asked Questions

Expert Answers for Factory Operations

Do inter-state stock transfers count toward turnover?

Yes. Stock transfers between distinct GSTINs of the same PAN are treated as taxable supplies under Schedule I and count toward the ₹5 crore threshold.

Are job work service charges included in AATO?

Yes. Service fees charged by a job worker to a principal constitute taxable service revenue and are included in the job worker's AATO.

AK

Abhishek Kumar

LinkedIn Profile

Senior Finance & ERP Systems Architect, Werkora

Senior accountant and enterprise systems specialist with 9+ years of experience across Indian GST/TDS compliance, SAP S/4HANA, Tally Prime, and finance automation. Direct operational background in precision instruments manufacturing and multi-jurisdictional statutory compliance with a zero-penalty record.

Cite this guide
APA, Markdown or BibTeX

Copy a citation to include this guide in your article or report.

Interactive Cost Comparison

Calculate Your Plant's Licensing Savings

Benchmark your current software bills against Werkora's unit-based pricing (10 users/unit · min 3 units).

Projected 3-Year Savings for Your Operation (3 Factory Units · 30 Users)

Save up to ₹6.8 Lakhs over 3 years

Compared to standard per-user seat pricing models like ERPNext ($13.50/user/mo).

Each unit includes 10 active user seats (Operations, Store, Accounts, Planning).

3

Base commitment minimum is 3 units (30 user seats total).

Commitment Term:

Werkora Plan

Werkora

₹14,997/mo (3 Units · 30 Seats)

Annual Cost

₹1,79,964

3-Year TCO

₹5,39,892

30 user seats (3 units × 10)

ERPNext Cloud

$13.50 / user / mo

Annual Cost (30 Users)

₹4,05,816

3-Year TCO

₹12,17,448

Save ₹6.8 Lakhs

TYASuite

₹499 / user / mo (~$6)

Annual Cost (30 Users)

₹1,79,640

3-Year TCO

₹5,38,920

Save ₹0

Zoho Creator

$8 / user / mo

Annual Cost (30 Users)

₹2,40,480

3-Year TCO

₹7,21,440

Save ₹1.8 Lakhs

SAP Business One

$50+ / user / mo

Annual Cost (30 Users)

₹15,03,000

3-Year TCO

₹45,09,000

Save ₹39.7 Lakhs

What's Included in Werkora's Plan (from ₹4,999/unit/mo · Min 3 Units):

10 Users per Factory Unit (30 Users in Base)
Minimum 3 Factory Units Included
GST Tax Invoices & Delivery Challans
BOM Formulation & Scrap Accounting
Customer, Supplier & Ledger Accounting
Batch FIFO Inventory Valuation
Shop Floor Travelers & Operation Routing
Extra Units at ₹4,999/mo (+10 users each)

Plan your ERP budget

Review the ERP buying guide or contact us to discuss the units, users, and deployment options your factory needs.

Related Manufacturing Playbooks

Explore adjacent topics in factory operations, costing, and statutory GST compliance.