Use the online GST calculator to compute GST amount and final price from your entered amount and GST rate—fast results, no installs.
Add GST to a net price, remove GST from a gross total, or back out the GST component from any inclusive amount. The XConvert GST Calculator runs entirely client-side — no sign-up, no upload, no data leaves your browser. Pick a country preset (India, Australia, New Zealand, Singapore, Canada) or type a custom rate, and the net, GST, and gross figures update together.
Most invoicing mistakes come from mixing up "GST-inclusive" and "GST-exclusive" pricing or applying the wrong slab to a particular good. This tool keeps the math honest so you can focus on the decisions that matter: which slab applies, whether the transaction is intra-state or inter-state, and whether the supply is zero-rated, exempt, or fully out of scope.
gross = net × (1 + rate)). "Remove GST" backs the tax out of an inclusive total (net = gross ÷ (1 + rate)). Both modes show the net, the GST amount, and the gross side-by-side.If you handle European invoicing too, switch to the VAT Calculator — the math is identical but the country presets cover EU/UK rates. For US transactions use the Sales Tax Calculator, and for promotional pricing the Discount Calculator.
GST is a percentage applied to the net price. The gross is what the customer pays; the GST amount is what the seller remits to the tax authority (or splits between centre and state, in India's case).
gross = net × (1 + rate). India 18%: ₹1,000 net × 1.18 = ₹1,180 gross, with ₹180 GST.net = gross ÷ (1 + rate). Australia 10%: A$110 gross ÷ 1.10 = A$100 net, leaving A$10 GST.gst = gross − (gross ÷ (1 + rate)). NZ 15%: NZ$115 − (NZ$115 ÷ 1.15) = NZ$15.The common mistake is multiplying the gross by the rate to "remove" GST — that gives ₹212.40 on an ₹1,180 total at 18%, which is wrong by ₹32.40. GST has to be removed by division, because the rate was applied to the net, not the gross.
Verified against IRAS (Singapore), CBIC and the 56th GST Council notification (India), ATO (Australia), Inland Revenue (NZ), and CRA (Canada) as of January 2026.
| Country | Standard | Other Rates | Notes |
|---|---|---|---|
| Australia | 10% | 0% (GST-free: basic food, health, education, exports) | Flat rate since 1 July 2000; A$75,000 registration threshold |
| New Zealand | 15% | 0% (exports, financial services exempt) | NZ$60,000 registration threshold; one of the cleanest single-rate systems in the world |
| Singapore | 9% | 0% (exports, international services) | Raised from 8% to 9% on 1 January 2024 (after 7%→8% on 1 January 2023) |
| India | 5% / 18% / 40% | 0%, 0.25% (rough diamonds), 3% (gold, precious metals) | GST 2.0 reforms effective 22 September 2025 — verify current slabs at cbic.gov.in |
| Canada (federal) | 5% GST | + PST/HST/QST by province | See Canada provincial table below |
| Malaysia | n/a (SST) | 5%/10% sales, 6%/8% service | Malaysia replaced GST with SST on 1 September 2018 |
| United States | n/a | Sales tax by state (0%–~10% combined) | No GST; see Sales Tax Calculator |
Canada layers a 5% federal GST on top of a provincial tax that varies by jurisdiction. Five provinces harmonised the two into a single HST; the rest charge GST plus a separate PST/RST/QST.
| Province / Territory | GST | Provincial | Combined |
|---|---|---|---|
| Alberta, NWT, Nunavut, Yukon | 5% | — | 5% |
| British Columbia | 5% | 7% PST | 12% (separate lines) |
| Saskatchewan | 5% | 6% PST | 11% (separate lines) |
| Manitoba | 5% | 7% RST | 12% (separate lines) |
| Quebec | 5% | 9.975% QST | 14.975% (separate lines) |
| Ontario | HST 13% | (harmonised) | 13% |
| Nova Scotia | HST 14% | (harmonised, reported lowered from 15% on 1 April 2025 — verify current rate at novascotia.ca) | 14% |
| New Brunswick, Newfoundland & Labrador, PEI | HST 15% | (harmonised) | 15% |
India's GST is destination-based and splits the total rate three ways depending on whether the supply crosses a state border.
| Supply type | What you charge | Example at 18% |
|---|---|---|
| Intra-state (seller and buyer in the same state) | CGST (centre) + SGST (state), each half the total rate | 9% CGST + 9% SGST |
| Inter-state or export/import | IGST (integrated), at the full combined rate | 18% IGST |
| Union Territory (no state legislature) | CGST + UTGST | 9% CGST + 9% UTGST |
The calculator gives you the total GST figure; if you're issuing an intra-state invoice you split it in half between the CGST and SGST lines. The total tax collected is the same in both cases — only the centre/state revenue allocation differs.
| Property | GST (India, AU, NZ, SG, CA) | VAT (EU, UK) | Sales Tax (US) |
|---|---|---|---|
| Where collected | Every stage of the supply chain | Every stage of the supply chain | Final retail sale only |
| Input tax credit | Yes — businesses reclaim GST paid on inputs | Yes | No — paid entirely by end consumer |
| Typical rate | 5%–18% standard, up to 40% for sin goods (India) | 17%–27% standard | 0%–~10% combined state + local |
| Price tags | Mixed (AU/NZ usually inclusive; India often quoted exclusive B2B) | Usually inclusive | Usually exclusive |
| Cross-border B2B | Reverse-charge in most GST systems | Reverse-charge | Generally no equivalent |
| Administered by | Federal/national government | Country-level (with EU directives) | State and local governments |
Functionally GST and VAT are the same tax under different names — both are multi-stage consumption taxes with input credits, and the calculator math is identical. The biggest user-visible difference is regional: ask for "VAT" in Australia and you'll get a blank stare; ask for "GST" in Germany and the same.
These three look identical to the end consumer (no GST on the bill) but differ fundamentally for the business.
| Category | GST charged | Input credit | Examples |
|---|---|---|---|
| Zero-rated (0%) | No | Yes — claim back input GST | Exports, international services, basic groceries (in some jurisdictions) |
| Exempt | No | No | Financial services, residential rent, healthcare, education (varies by country) |
| Nil-rated (India) | No | No | Fresh produce, salt, milk, books, judicial services |
| Out of scope | No | No | Hobbies, personal sales, unincorporated activities below threshold |
The practical difference: a bakery zero-rated on bread can still claim back the GST on its flour, oven, and rent; a private medical clinic exempt from GST on consultations cannot. Misclassifying an exempt supply as zero-rated is a common audit finding.
Mechanically, yes. Both are multi-stage consumption taxes collected at each step of the supply chain, with businesses reclaiming the tax they paid on inputs so only the value added is taxed. "GST" is the term used in India, Australia, New Zealand, Singapore, Canada, and several other jurisdictions; "VAT" is the term in the EU, UK, and most of the rest of the world. The calculation is identical — just substitute your country's rate. The XConvert VAT Calculator uses the same math with EU/UK presets.
The 56th GST Council notification (effective 22 September 2025) reportedly collapsed the four-slab structure (5/12/18/28%) into three primary rates: 5%, 18%, and 40%. Items previously at 12% mostly moved to 5% (essentials) or 18% (other goods); items at 28% mostly moved to 18% or up to the new 40% sin-goods rate (aerated drinks, premium cars, tobacco). The special 0.25% (rough diamonds) and 3% (gold and jewellery) rates were retained. Nil-rated essentials like fresh produce, milk, and books stay at 0%. Verify the current applicable slab for your goods/services at cbic.gov.in before filing, as GST Council decisions are updated frequently.
Always — by design. India's GST is destination-based, and the total tax on a supply at, say, 18% is always 18% whether the buyer is across the street or across the country. The split changes: intra-state transactions show 9% CGST + 9% SGST (half each, centre and state); inter-state transactions show a single 18% IGST line that the centre later allocates to the destination state. Union Territory supplies use CGST + UTGST in the same 50/50 split. Same total tax, different distribution.
Reverse-charge flips the GST liability from the supplier to the recipient. The buyer self-charges the tax on their own GST return instead of the seller charging it on the invoice. In India, RCM applies to (a) purchases from unregistered suppliers for certain notified categories, (b) specific notified services (legal services from advocates, GTA road transport, director services, sponsorship), and (c) imports of services from outside India. The recipient pays the GST in cash through the GST portal (input tax credit can't be used to discharge an RCM liability), then claims it back as input credit if the supply is used for business. Per CBIC notifications, failure to pay attracts a penalty equal to the unpaid tax or ₹10,000, whichever is higher.
Voluntary registration below threshold is allowed in all of these and is often worthwhile if your customers are themselves GST-registered businesses that can reclaim the GST you charge.
Both result in no GST on the customer's invoice. The crucial difference is input tax credit: zero-rated supplies are "technically taxable at 0%", which lets you reclaim the GST paid on inputs (rent, supplies, equipment). Exempt supplies are outside GST scope entirely, so you cannot reclaim any input GST. A baker selling zero-rated bread reclaims GST on flour and ovens; a private school exempt on tuition cannot reclaim GST on its desks and books. Misclassifying exempt as zero-rated is a common compliance error and an audit red flag.
Singapore raised its GST rate from 8% to 9% on 1 January 2024, the second step of a two-stage increase announced in Budget 2022 (7%→8% on 1 January 2023, then 8%→9% on 1 January 2024). Receipts dated on or after 1 January 2024 must show GST at 9% per IRAS guidance. There are transitional rules for invoices that span the rate-change date — IRAS published a 9% rate-change e-Tax guide with the timing rules for advance payments, deposits, and continuous supplies.
No. Malaysia introduced a 6% GST on 1 April 2015 but abolished it on 1 September 2018 and replaced it with the older two-tier Sales and Service Tax (SST). Current rates are 5% or 10% sales tax on manufactured/imported goods and 6% or 8% service tax on specified services. SST is a single-stage tax (charged at the point of manufacture or service supply, not at every supply-chain step), so unlike GST/VAT there's no input tax credit between businesses.
Yes — the calculator is currency-agnostic. GST is a percentage of the net amount, so the same math works whether you're computing in INR, AUD, NZD, SGD, CAD, MYR, USD, or any other currency. Just remember that the rate to apply is determined by the place-of-supply rules in the country of taxation, not by which currency the invoice happens to be denominated in.
No. The GST Calculator runs entirely client-side in your browser. No amounts, rates, or country choices are transmitted to any server — you can verify this in browser DevTools → Network tab. Safe for sensitive pricing, margin, and revenue figures you wouldn't paste into a hosted spreadsheet or third-party SaaS calculator.
Related XConvert Tools: VAT Calculator · Sales Tax Calculator · Discount Calculator · Percentage Calculator · Tip Calculator