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About
India GST Calculator: GSTCalcy
Calculate GST instantly with India GST Calculator: GSTCalcy – the fast, accurate, and easy-to-use GST Calculator India for businesses, shop owners, accountants, freelancers, students, and everyday users.
Whether you need to add GST, remove GST, or calculate CGST, SGST, and IGST, GSTCalcy helps you complete calculations in seconds.
Key Features
Add or Remove GST instantly
Supports all Indian GST tax slabs: 3%, 5%, 12%, 18%, and 28%
Calculate CGST, SGST & IGST automatically
Net GST Calculator and Reverse GST Calculator
Built-in Citizen Calculator with memory functions (M+, M-, MR)
Save, Copy & Share GST invoices and calculation results
Dark Mode for comfortable day and night usage
Clean, fast, and easy-to-use interface
Works offline – no internet required for calculations
GST Calculation Modes
Net GST Calculator
Enter the original amount and select the GST rate to instantly calculate:
• GST amount
• Total amount
• CGST & SGST split
• IGST value
Reverse GST Calculator
Enter the total amount including GST and choose the GST rate to quickly find:
• Original taxable value
• GST amount
• CGST & SGST breakdown
• IGST amount
Save & Share Results
Save GST calculation results as invoice images for future reference.
You can:
• Copy GST details
• Share GST calculations
• Save GST invoices to your device
Perfect for billing, accounting, taxation, and business records.
Citizen Calculator Functions
Includes a built-in Citizen-style calculator with:
• M+
• M-
• MR
• Fast and accurate arithmetic calculations
Why Choose GSTCalcy?
• Accurate GST calculations
• Lightweight and fast performance
• Modern, user-friendly design
• Offline support
• Less battery consumption with Dark Mode
• Ideal for retailers, wholesalers, accountants, CA students, shopkeepers, freelancers, and business owners
Download India GST Calculator: GSTCalcy today and simplify your daily GST calculations with one powerful and reliable GST Calculator.
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What's New in GST Calculator India
1.0
July 15, 2026