GST Calculator

Free
Utilities
(4.9)

Calculate GST inclusive or exclusive amounts with CGST, SGST, or IGST — instantly.

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

Core capabilities

Why use this GST calculator

Quick inclusive/exclusive GST math with clear CGST, SGST, and IGST breakdown.

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.

6+
Features
99.9%
Reliability
24/7
Available
Free
Always
Step-by-step flow

How to Use

Simple 4-step process

1

Step 1

Choose Exclusive (add GST) or Inclusive (remove GST) mode.

2

Step 2

Enter the amount and select a GST rate (or type a custom %).

3

Step 3

Pick Intra-state (CGST/SGST) or Inter-state (IGST).

4

Step 4

Read the base amount, tax split, and final total instantly.

Quick Start
Begin in seconds
Easy Process
No learning curve
Instant Results
Get results immediately
Frequently Asked Questions

Frequently Asked Questions

Everything you need to know about this tool and how it works.

See Full FAQ

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.

Use CGST + SGST for supply within the same state. Use IGST for supply between different states (or as applicable under GST rules).

This tool is for quick estimates and invoice checks. Always confirm with your accountant or GST software for filing and compliance.

Yes. Use the custom rate field if your goods or services use a rate outside the common presets.

Still have questions?

Can't find what you're looking for? We're here to help you get the answers you need.

Related tools

More Utilities tools you might find useful

Currency Converter

Convert between currencies with real-time exchange rates

Pomodoro Timer

Focus timer with 25/5 technique, session tracking, and statistics

CGPA ↔ Percentage Converter

Convert CGPA to percentage and percentage to CGPA with common formulas.

Timezone Converter

Convert times between different timezones