SOURCE-AWARE TAX AND PAY SCENARIOS
GST Calculator
Estimate GST amount and gross invoice total from a taxable value and the GST rate applicable to your transaction.
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Your result
Ready when you are.
Enter your values and choose Calculate. Your inputs stay on this device.
How it works
GST amount = taxable value × GST rate. Gross total = taxable value + GST amount.
Assumptions and limits
Does not determine the applicable GST rate, registration, place of supply, ITC, exemptions, invoice requirements, or CGST/SGST/IGST treatment.
About this calculator
This GST scenario adds a user-verified rate to the taxable value you enter.
What this tool helps you check
Add a GST rate you have verified to a taxable value and keep the arithmetic separate from invoice or filing rules.
How to use it
- Check the assumptions shown for this gst calculator before entering a scenario.
- Enter the base amount and confirm the applicable rate and transaction treatment from the GST Portal or professional advice.
- Select Calculate to keep the inputs and method visible beside the result.
- Do not use this simplified arithmetic as an invoice, return, input-credit, or tax-liability determination.
Source and update
Last reviewed: 2026-08-10
GST Portal — official taxpayer servicesFrequently asked questions
What does this gst calculator estimate?
This GST scenario adds a user-verified rate to the taxable value you enter.
Can I enter amounts in lakhs or crores?
Yes. Enter the full rupee amount or an equivalent decimal value. Results are formatted with Indian number grouping for readability.
Is the result an official quote, filing, or recommendation?
No. It is an educational estimate based on the values entered. Verify a financial, tax, payroll, or investment decision against the applicable official record or provider.
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