GST Tax Calculator
Calculate Goods and Services Tax (GST) additions or removals. View central CGST, state SGST, and tax breakups instantly.
Calculation Breakdown
Tax Guidelines
Standard sales taxes vary globally. The US utilizes local sales taxes, the UK uses a 20% VAT, while India operates under 4 standard GST categories: 5%, 12%, 18%, and 28%.
Invoicing Tip
When generating commercial invoices, always list the Base amount, CGST, SGST (or total VAT/GST), and total net amount separately to ensure tax compliance auditing.
How to Use GST Calculator
- Enter the starting value in the 'Base Amount' field.
- Select the GST calculation direction: choose 'Add GST' (to calculate tax on top of a net price) or 'Remove GST' (to extract the tax amount from a gross inclusive price).
- Choose a standard GST percentage slab rate (5%, 12%, 18%, 28%) or select 'Custom' to input a custom percentage rate.
- Review calculations immediately: Base Price, CGST (Central GST), SGST (State GST), Total GST Amount, and final Net Amount.
Key Features & Privacy Guarantee
- Directional Computation: Compute tax additions (exclusive to inclusive) or removals (inclusive to exclusive) in one click.
- CGST & SGST Split: Automatically breaks down the Central and State GST shares (standard 50:50 allocation).
- Standard & Custom Slabs: Quick toggle buttons for standard tax slabs alongside full support for decimal rates.
- 100% Client-side Execution: Financial records and amounts remain private, processing strictly in your web browser.
Frequently Asked Questions
What is GST?
GST stands for Goods and Services Tax. It is a multi-stage, destination-based, indirect tax levied on the supply of goods and services. It replaces various local indirect taxes (such as VAT, service tax, excise duty) to establish a unified single tax system.
How do you calculate GST Addition?
To add GST to a base amount, multiply the base price by the GST rate divided by 100. Formula: GST Amount = Base Price x (GST Rate / 100). The final total price is: Base Price + GST Amount.
How do you calculate GST Removal (Exclusive)?
To extract GST from an inclusive total amount, divide the total price by (1 + GST Rate / 100). Formula: Base Price = Total Price / (1 + GST Rate / 100). The tax amount is then: Total Price - Base Price.
What are CGST, SGST, and IGST?
Under the GST system, CGST (Central GST) and SGST (State GST) are levied on intra-state supplies (transactions within the same state) and are shared equally (50:50) between Central and State governments. IGST (Integrated GST) is levied on inter-state transactions (between different states) and is collected by the Central government.