Start calculating: Open the Indian GST Calculator — multi-slab rates (5%–28%), live bidirectional math, and a visual breakdown. Every country and rate tool on this page uses the same formulas.
What is GST?
Goods and services tax (GST) is a consumption tax applied to most goods and services. Registered businesses charge GST on sales, claim credits on purchases, and remit the net amount to the revenue authority. The same math applies whether your country calls it GST, VAT, or sales tax — you need the tax-exclusive price, the rate, and the tax-inclusive total.
CGST, SGST, and IGST in India
India splits GST differently from single-rate countries. Use our Indian GST Calculator for intra-state CGST + SGST/UTGST or inter-state IGST on the same invoice. Other countries on this page use one combined tax line at the standard rate.
How to calculate GST
Given a price excluding GST and a rate r%:
When the receipt shows a tax-inclusive total, divide by (1 + rate) to back out the pre-tax price:
Worked example (18% GST)
A ₹1,000 pre-tax invoice at 18% GST adds ₹180 tax for a ₹1,180 total. If you only know ₹1,180, divide by 1.18 to get ₹1,000. Use the Indian GST Calculator to switch between 5%, 12%, 18%, and 28% slabs instantly.
GST rates by country (2026 reference)
Rates change with legislation — always confirm with your tax authority before filing. As of 2026, headline standard rates include:
| Country | Tax name | Standard rate | Calculator |
|---|---|---|---|
| India | GST | 18% (multi-slab) | Indian GST Calculator |
| Australia | GST | 10% | Australia GST Calculator |
| Singapore | GST | 9% | Singapore GST Calculator |
| New Zealand | GST | 15% | NZ GST Calculator |
| Canada | GST / HST | 5% federal | Canada GST Calculator |
| Egypt | VAT | 14% | Egyptian GST Calculator |
| Jersey | GST | 5% | Jersey GST Calculator |
| Jordan | GST | 16% | Jordanian GST Calculator |
| Malaysia | SST | 10% / 8% | Malaysian GST Calculator |
| Maldives | GST | 8% / 16% TGST | Maldivian GST Calculator |
| Papua New Guinea | GST | 10% | PNG GST Calculator |
Rates are for orientation. Exemptions, zero-rating, and provincial taxes may apply.
When to use a percentage GST calculator
Not sure which country tool fits? Use a fixed-rate calculator when you already know the percentage:
- 5% GST Calculator — Jersey GST, India 5% slab, Egypt reduced rate
- 10% GST Calculator — Australia, PNG, Malaysia sales tax
- 15% GST Calculator — New Zealand and other 15% jurisdictions
GST vs VAT vs sales tax
VAT and GST are both multi-stage taxes with input credits — the name depends on the country. U.S. sales tax is usually simpler at checkout but varies by ZIP code. Our GST suite covers international GST/VAT math; use the sales tax tool for U.S. receipts.
Who uses a GST calculator?
- Shoppers
- Compare tax-inclusive shelf prices and spot the true pre-tax cost.
- Freelancers & small businesses
- Quote invoices with the correct GST split before issuing PDFs.
- Students
- Practice forward and reverse GST formulas with step-by-step breakdowns.
- Expats & travellers
- Switch between country calculators (India, Singapore, Australia, etc.) without re-learning the math.
All GST calculators on ShoutingNow
Each tool splits price including GST, GST amount, and price excluding GST with live updates — no submit button required. Pick your jurisdiction or a fixed percentage:
Country GST calculators
- Indian GST Calculator — Multi-slab GST (0.25%–28%) with ₹ currency
- Australia GST Calculator — 10% GST for Australia (A$)
- Canadian GST Calculator — Provincial GST, HST, PST, RST & QST by province (C$)
- Singaporean GST Calculator — 9% GST from 2024 (S$)
- NZ GST Calculator — 15% New Zealand GST (NZ$)
- Malaysian GST Calculator — SST — 10% sales tax, 8% service tax (RM)
- Egyptian GST Calculator — 14% VAT standard, 5% reduced (E£)
- Jordanian GST Calculator — 16% general sales tax (JD)
- Jersey GST Calculator — 5% Jersey GST (£)
- Maldivian GST Calculator — 8% GST and 16% tourism GST (Rf)
- Papua New Guinean GST Calculator — 10% PNG GST (K)
Fixed-rate GST calculators ($)
- 5% GST Calculator — 5% GST — Jersey, India reduced slab, Egypt reduced
- 6% GST Calculator — 6% GST — blended or legacy rates
- 10% GST Calculator — 10% GST — Australia, PNG, Malaysia goods
- 15% GST Calculator — 15% GST — New Zealand standard rate
Shopping in the United States? Try our Sales Tax Calculator for state and local rates.