GST Calculator
Fast and accurate GST calculations for businesses. Add or remove tax with comprehensive Central and State tax breakdowns.
GST Calculator
Quick & Accurate Tax Calculations
Live calculation enabled. Results update automatically as you type. CGST and SGST are half of the total GST rate for intra-state sales.
Start Calculating GST
Enter the amount and select a GST rate on the left. We'll show you the breakdown instantly.
Calculation Timeline
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Why Use Our GST Calculator?
Calculating tax manually can be prone to errors, especially when extracting the base price from a total amount. Our GST Calculator simplifies this by providing instant calculations for both "Adding GST" and "Removing GST" scenarios. Whether you are generating an invoice or checking a bill, this tool ensures you get the exact tax breakdown including CGST, SGST, and IGST.
Key Features of GST Tool
Add GST Mode
Find out the final amount after adding tax to the base price.
Remove GST Mode
Extract the original base price from a total inclusive amount.
Tax Split
See exact breakdowns for CGST, SGST, and IGST components.
Predefined Rates
Quickly select common GST rates like 5%, 12%, 18%, or 28%.
Live Calculation
Results update as you type, no need to click calculate every time.
Privacy First
All data stays on your device. We do not store your financial entries.
Enterprise Grade Privacy
Finance data is sensitive. That's why our GST calculator is strictly client-side. The logic is executed locally in your browser, meaning no data is transmitted over the internet to our servers. This ensures maximum speed and 100% privacy for your business calculations.
Pro Tip
"Switch between 'Add GST' and 'Remove GST' modes to verify your calculations. Use the copy button to quickly paste the full summary into your invoices or documents."
GST Calculator FAQ
GST (Goods and Services Tax) is an indirect tax used in India on the supply of goods and services. It is a value-added tax levied on most goods and services sold for domestic consumption.
To add GST, multiply the original amount by (GST Rate / 100). The result is the GST amount. Add this to the original amount to get the total amount including GST.
To remove GST (extract base price), use the formula: Base Amount = Total Amount / (1 + GST Rate / 100). The GST amount is then: Total Amount - Base Amount.
In intra-state transactions (within the same state), GST is split into two halves: CGST (Central GST) collected by the Central Government and SGST (State GST) collected by the State Government.
IGST (Integrated GST) is applied to inter-state transactions (between two states) and is collected by the Central Government.
Yes, our calculator follows standard GST formulas used by businesses and tax professionals. It provides rounding to two decimal places for financial accuracy.