Quickly calculate GST on any amount with our free GST Calculator. Add or remove GST instantly and get accurate tax values for products, services, or invoices.
Enter the base price (excluding GST) to calculate the final amount.
Quick select Indian GST slab:
Intra-state splits into CGST + SGST. Inter-state uses IGST.
Type your base price or GST-inclusive price into the amount field.
Pick from standard Indian GST slabs — 0%, 5%, 12%, 18%, 28% — or enter a custom rate.
Select whether to add GST to your base price or extract GST from a GST-inclusive price.
Instantly see the base amount, CGST, SGST or IGST, and the final total — ready to copy.
Results update as you type. No submit button, no waiting — the GST amount appears in real time.
Switch between adding GST to a net price and stripping GST from a gross price with a single click.
Automatically splits GST into CGST + SGST for intra-state, or shows full IGST for inter-state transactions.
Covers all official Indian GST rate slabs: 0%, 5%, 12%, 18%, and 28%. Custom rates also supported.
While GST is an Indian tax, display calculations in INR, USD, GBP, EUR or AUD for international reference.
All calculations happen in your browser. Nothing is stored, sent, or tracked — ever.
Fully responsive — works flawlessly on desktop, tablet, and mobile. No app download needed.
View a full tax breakdown showing each component separately — ideal for invoicing and record-keeping.
One-click copy exports all figures to your clipboard — paste directly into invoices, spreadsheets, or emails.
Goods and Services Tax (GST) is a unified indirect tax levied across India, replacing a complex web of central and state taxes. Introduced on 1 July 2017, it operates on a dual structure — the Centre and States both levy tax on the same supply of goods or services.
For intra-state supplies, GST is split equally into Central GST (CGST) and State GST (SGST). For inter-state supplies or imports, Integrated GST (IGST) applies at the full rate.
Incorrect GST on invoices can trigger notices, penalties, and interest from the tax department. Accurate calculation keeps you fully compliant.
Knowing exact GST paid on each purchase ensures you claim the full ITC you are entitled to, reducing your net tax liability.
A GST invoice must show the correct taxable value, GST rate, CGST/SGST or IGST amounts, and total — errors can invalidate the invoice.
Understanding whether your quoted price is inclusive or exclusive of GST prevents costly under-pricing and client disputes.
Accurate records of GST charged and paid make GSTR-1, GSTR-3B, and annual return filing straightforward and error-free.
Show clients exactly what they are paying — base price, GST component, and total — building trust and reducing payment disputes.
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Estimate your tax refund based on withholdings, deductions, and credits.
Free, instant, and accurate no account required. Run your first calculation in under 10 seconds.
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