GST Calculator — India 2024-25
Calculate GST on any amount. Get CGST, SGST, and IGST breakdown instantly. Supports all GST rates — 5%, 12%, 18%, 28%.
Enter Amount & GST Rate
GST will be added on top of the amount you enter.
GST Breakdown
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The Definitive Guide to GST Calculation in India
The Goods and Services Tax (GST) is a comprehensive, multi-stage, destination-based tax that is levied on every value addition in India. For Chartered Accountants, business owners, and finance professionals, calculating GST accurately is critical to ensuring compliance, avoiding penalties, and maximizing Input Tax Credit (ITC).
1. The Three Components of GST
GST in India is divided into three main components depending on the nature of the transaction:
- CGST (Central Goods and Services Tax): Collected by the Central Government on an intra-state sale (e.g., a sale within Maharashtra).
- SGST (State Goods and Services Tax): Collected by the State Government on an intra-state sale. CGST and SGST are always charged together and equally divide the total GST rate.
- IGST (Integrated Goods and Services Tax): Collected by the Central Government for inter-state sales (e.g., Maharashtra to Gujarat). IGST is equal to the sum of CGST and SGST.
2. Inclusive vs. Exclusive GST Calculations
Our GST calculator provides two distinct modes for different accounting scenarios:
Exclusive GST
The base amount does not include tax. To calculate: Total = Base Amount + (Base Amount × Rate / 100). Use this when you have the taxable value and need to add tax to an invoice.
Inclusive GST
The total amount already includes the tax. To extract the base amount: Base = Total / (1 + Rate / 100). Use this when calculating backwards from an MRP or final payment amount.
3. Input Tax Credit (ITC) and Automation
One of the primary benefits of GST is the seamless flow of Input Tax Credit (ITC) across the supply chain. Businesses can reduce their final tax liability by claiming credit for the GST paid on purchases. However, to claim ITC, the purchase invoices must be accurately recorded in your accounting software (like Tally) and must match the supplier's GSTR-1 filings (visible in your GSTR-2B).
Manually calculating and entering GST data from hundreds of purchase invoices is prone to typos, which can lead to ITC mismatches and lost cash flow. This is why modern CA firms use AI-powered tools like AccuRaik to automatically extract CGST, SGST, IGST, and taxable values directly from invoice PDFs and export them into Tally XML.
Frequently Asked Questions
What is GST in India?
What is the difference between CGST, SGST, and IGST?
What does inclusive vs exclusive GST mean?
Which GST rate applies to professional services?
How is GST calculated on discounted products?
What is the Reverse Charge Mechanism (RCM)?
Is it mandatory to show CGST and SGST separately on an invoice?
Can I use this calculator for bulk GST invoice preparation?
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