GST Calculator.
Calculate GST inclusive or exclusive amounts with CGST, SGST, or IGST — instantly.
- Utilities
- Runs in your browser
GST Calculator
Calculate GST inclusive/exclusive amounts with CGST, SGST, or IGST split.
Base amount: ₹10,000.00
CGST (9%): ₹900.00
SGST (9%): ₹900.00
Total GST: ₹1,800.00
Final amount: ₹11,800.00
How it works
Four steps.
- 01
Choose Exclusive (add GST) or Inclusive (remove GST) mode.
- 02
Enter the amount and select a GST rate (or type a custom %).
- 03
Pick Intra-state (CGST/SGST) or Inter-state (IGST).
- 04
Read the base amount, tax split, and final total instantly.
Features
Why use this GST calculator.
GST Inclusive & Exclusive
Calculate GST on amount exclusive of tax, or reverse-calculate from an inclusive total.
Common GST Rates
One-click presets for 0%, 5%, 12%, 18%, and 28% GST rates used in India.
CGST / SGST / IGST Split
See CGST+SGST for intra-state and IGST for inter-state supply scenarios.
Clear Breakdown
View base amount, GST amount, and final invoice total in one place.
Private Calculator
Runs fully in your browser with no signup required.
Fast & Free
Instant GST math for invoices, quotes, and everyday billing checks.
What is the difference between exclusive and inclusive GST?
Exclusive means your amount does not include tax yet — we add GST on top. Inclusive means the amount already includes GST — we reverse-calculate the base and tax portions.
When should I use CGST/SGST vs IGST?
Use CGST + SGST for supply within the same state. Use IGST for supply between different states (or as applicable under GST rules).
Are these official tax calculations?
This tool is for quick estimates and invoice checks. Always confirm with your accountant or GST software for filing and compliance.
Can I enter a custom GST rate?
Yes. Use the custom rate field if your goods or services use a rate outside the common presets.
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Built by Infyways
Need more than a tool.
These utilities are made by the Infyways studio. When a free tool is not enough, we build the real thing.
