About GST Tax Calculator
The GST Tax Calculator focuses on the tax component alone: enter taxable value and rate to get GST payable, half-rates for CGST/SGST, and optional IGST for interstate deals.
Calculation Formula
Use these standard formulas for accurate estimates:
GST tax amount
Example Calculation
Example: ₹15,000 @ 5% GST
| Component | Value |
|---|---|
| Taxable value | ₹15,000.00 |
| GST | ₹750.00 |
| CGST / SGST each | ₹375.00 |
Benefits of Using This Calculator
Instant, accurate GST math aligned with Indian tax formulas
Automatic CGST, SGST, and IGST split for compliance-ready figures
Supports all major GST slabs plus custom rate entry
Mobile-friendly layout—calculate on phone or desktop
No data stored—calculations run locally in your browser
Free forever—ideal for SMEs, freelancers, and accountants
Frequently Asked Questions
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Rates depend on HSN/SAC classification—common slabs are 5%, 12%, 18%, and 28%.
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Common GST rates are 0%, 5%, 12%, 18%, and 28%. Certain goods like gold attract 3%, and some items have cess. Rates are notified by the GST Council and may change.
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For intra-state sales, GST is split equally into CGST (Central) and SGST (State). For inter-state sales, IGST is charged by the Centre and later apportioned.
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Yes. Investro GST calculators are 100% free, require no signup, and run in your browser for instant results.
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Results are estimates based on standard formulas. For statutory filings, consult a tax professional and refer to the latest GST notifications.
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Conclusion
Use this free tool for quick, accurate estimates—always verify with your chartered accountant for filings, audits, and legal interpretations. Explore related GST calculators below for inclusive pricing, ITC, invoicing, and industry-specific tax.