Add or remove GST instantly. Multi-slab support, 12 currencies, professional PDF report. Free forever.
| Country | Standard Rate | Reduced Rates |
|---|---|---|
| 🇦🇺Australia | 10% | 0% (food, health) |
| 🇨🇦Canada | 5% (GST) | + Provincial tax |
| 🇮🇳India | 18% | 5%, 12%, 28% |
| 🇳🇿New Zealand | 15% | 0% (exports) |
| 🇸🇬Singapore | 9% | 0% (exports) |
| 🇬🇧UK (VAT) | 20% | 5%, 0% |
| 🇩🇪Germany (VAT) | 19% | 7% |
| 🇵🇰Pakistan | 17% | Various |
| 🇦🇪UAE (VAT) | 5% | 0% (exempt) |
| 🇺🇸USA (Sales Tax) | 0–13% | State-specific |
Calculate GST in seconds — add tax to a price, remove it from an inclusive amount, or break down multiple items with different rates. Here's exactly how.
Choose Add GST if you have a price before tax and want to find the total. Choose Remove GST if you have a GST-inclusive price and need the original base amount.
Type the price in the amount field. Select your currency from the dropdown — supports USD, GBP, EUR, AUD, CAD, INR, PKR, AED, SGD, NZD, JPY, and SAR.
Click a preset rate — 5%, 9%, 10%, 12%, 15%, 18%, 20%, or 28% — or type any custom rate in the field below. The calculator updates instantly as you type.
The right panel shows: Input Amount, Base Price (excl. GST), GST Rate, GST Amount, Effective Rate, and the Total including GST — all live.
Click the Multi-Item Slab tab to add multiple products with different GST rates. The calculator totals all GST amounts and shows a grand total automatically.
Fill in your business name, client, GST registration number, and reference. Click Download PDF Report to get a professional, print-ready GST calculation document instantly.
These are the exact formulas our calculator uses — no rounding errors, no hidden fees.
GST (Goods & Services Tax) and VAT (Value Added Tax) are essentially the same consumption tax, just named differently by country. Australia, Canada, India, Singapore call it GST. UK, EU countries call it VAT. The calculation method is identical.
Select Remove GST mode, enter the GST-inclusive price, and choose your rate. The calculator instantly shows the original base price and exact GST amount. Formula: Base = Inclusive Price ÷ (1 + GST Rate / 100).
Australia has a flat 10% GST on most goods and services. Basic food, medical supplies, and some financial services are GST-free (0%). Select the 10% preset button for standard Australian GST calculations.
India has a multi-slab GST system: 5% (essential goods), 12% (processed foods, business class travel), 18% (most services, standard goods), and 28% (luxury goods, automobiles, tobacco). Use our Multi-Slab tab for mixed-rate invoices.
Yes — 100% free, forever. No account required, no watermarks on PDF, no data sent to any server. All calculations happen in your browser. Works for Australia, Canada, India, New Zealand, Singapore, UK, UAE, Pakistan, and more.
Registration thresholds vary: Australia $75,000/year, Canada $30,000/year, New Zealand $60,000/year, Singapore $1M/year, India ₹20 lakh/year. Exceeding these requires mandatory GST registration and collection.
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