GST Calculator
Calculate India GST with slab presets and CGST/SGST or IGST breakdown, then switch to Canada GST/HST mode for province-based CRA rates.
Last Updated: May 2026
GST and HST transaction calculator
Calculate India GST slabs or Canada GST/HST by province
Add tax to a pre-tax amount, extract tax from an inclusive total, split India GST into CGST/SGST or IGST, and estimate simple GST/HST collected after input credits.
Rule Snapshot: Reviewed May 2026
India presets use current major GST slabs of 0%, 5%, 18%, and 40%, with special and legacy presets for transaction-specific use. Canada mode uses CRA place-of-supply GST/HST rates: 5% GST in non-participating provinces and territories, 13% HST in Ontario, 14% HST in Nova Scotia, and 15% HST in other participating provinces.
GST/HST Inputs
Jurisdiction
Use exclusive to add GST/HST; use inclusive to remove it from the total.
Common current standard rate for many taxable goods and services.
This controls whether the result shows CGST/SGST or IGST.
Enter the unit amount before quantity and discount.
Use 1 for a single invoice or receipt total.
Discount is applied before tax in exclusive mode and before extraction in inclusive mode.
Optional simple credit estimate. Leave 0 for consumer totals.
GST/HST estimate only
GST/HST classification, exemptions, place of supply, reverse charge, composition schemes, QST/PST, cess, and filing rules can change the final tax treatment. This calculator is for planning and educational use. It does not replace official GST/HST filing software, CBIC notifications, CRA account guidance, or professional advice for registered businesses.
Reviewed For Methodology, Labels, And Sources
Every CalculatorWallah calculator is published with visible update labeling, linked source references, and review of formula clarity on trust-sensitive topics. Use results as planning support, then verify institution-, policy-, or jurisdiction-specific rules where they apply.
Reviewed by Iliyas Khan, Chief Operating Officer. Page updated May 2026. Tax, sales tax, insurance, and health calculators are reviewed when rules, rates, eligibility assumptions, healthcare standards, or source references change. Topic ownership: Tax calculators, Sales tax calculators, Insurance calculators, Health calculators.
Tax credentialed review: Named internal reviewer: Iliyas Khan, Chief Operating Officer. External credentialed professional review is still required before this page is treated as professional advice.
Internal tax and sales-tax methodology reviewer. Review scope: calculator assumptions, labels, source context, workflow clarity, and compliance-sensitive disclaimers.
Relevant review context: CalculatorWallah tax and sales-tax calculator workflow owner; Source-first review of IRS, state revenue, rate, and filing-sensitive references; Compliance-sensitive labels, assumptions, and user-facing disclaimer review.
Required professional credentials: CPA, Enrolled Agent, licensed tax professional. Scope: tax formulas, jurisdiction assumptions, withholding language, filing-sensitive examples, and compliance caveats.
This page is educational planning support. A named CPA, EA, or licensed tax professional should review the page before it is positioned as tax advice or used for filing decisions.
Source expectation: Review should cite current IRS, state revenue department, payroll-tax, or official tax authority sources where applicable.
How to Use This Calculator
Start by choosing India GST or Canada GST/HST. India mode is best when you need slab presets and a CGST/SGST or IGST invoice-style breakdown. Canada mode is best when the question is the CRA place-of-supply GST/HST rate for a province or territory.
Use exclusive mode when the entered price is before GST/HST. Use inclusive mode when the entered price already includes GST/HST and you need to reverse the tax portion.
Step 1: Choose India or Canada mode
Use India GST for slab presets and CGST/SGST or IGST output, or Canada GST/HST for province-based CRA rates.
Step 2: Select exclusive or inclusive pricing
Exclusive mode adds GST/HST to the net price; inclusive mode extracts GST/HST from a price that already includes tax.
Step 3: Pick the rate context
For India, choose a slab or custom rate and intra-state or inter-state supply. For Canada, choose the place-of-supply province or territory.
Step 4: Enter amount, quantity, discount, and credit
The calculator applies quantity and discount before tax, then subtracts any input tax credit from the simple remittance estimate.
Step 5: Review component breakdown
Check tax amount, gross total, effective tax share, CGST/SGST/IGST or GST/HST component rows, and caution notes.
How the GST Calculator Works
The calculator first multiplies the amount by quantity, then applies any discount. From there it either adds GST/HST to the net price or divides an inclusive price by 1 + rate to extract the tax portion. The output keeps net amount, tax amount, gross amount, and per-unit values separate.
| Step | Formula |
|---|---|
| Add GST/HST | Tax = net amount x rate; gross = net amount + tax |
| Remove GST/HST | Net amount = gross amount / (1 + rate); tax = gross - net |
| India intra-state split | CGST = half of GST; SGST/UTGST = half of GST |
| India inter-state split | IGST = full GST amount |
| Simple remittance estimate | GST/HST collected - input tax credit, floored at zero in this tool |
India mode then converts the GST amount into CGST plus SGST/UTGST for intra-state supplies or IGST for inter-state supplies. Canada mode keeps the GST or HST as one component because CRA guidance uses a single GST/HST rate by place of supply.
India GST Slabs and Canada GST/HST Rates
India GST Slab Presets
India GST rates depend on the exact goods or services supplied. This calculator uses current major slab presets and keeps special or legacy rates clearly labeled so old invoices and transition cases do not get confused with ordinary current defaults.
| Preset | Use case | Calculator treatment |
|---|---|---|
| 0% | Nil, exempt, or zero-rated supplies | Produces no GST amount, but classification still matters for invoicing and credit treatment. |
| 5% | Current merit-rate preset | Useful for eligible lower-rate goods or services after checking the HSN/SAC classification. |
| 18% | Current standard-rate preset | Common default for many taxable supplies and services. |
| 40% | Special demerit-rate preset | Use only where official notification applies to the exact supply. |
| 0.25% and 3% | Special low-rate presets | Useful for narrow categories such as selected precious stones or precious metals. |
| 12% and 28% | Legacy or transition presets | Included for old invoices, transition periods, and notification-specific checks, not as a generic default. |
For India income-tax planning, use the India Income Tax Calculator. GST is a transaction tax on supplies, so it should not be mixed with ITR regime comparison.
Canada GST/HST Province Mode
Canada mode uses province or territory selection to apply GST/HST rates. It does not add separate PST, RST, or QST in non-harmonized provinces, so the output stays focused on GST/HST rather than becoming a full provincial sales-tax calculator.
| Province or territory | GST/HST rate used | Important note |
|---|---|---|
| Alberta | 5% GST | No provincial sales tax layer is added by this calculator. |
| British Columbia | 5% GST | PST is separate and not included. |
| Manitoba | 5% GST | RST is separate and not included. |
| Northwest Territories | 5% GST | GST only. |
| Nunavut | 5% GST | GST only. |
| Quebec | 5% GST | QST is separate and not included. |
| Saskatchewan | 5% GST | PST is separate and not included. |
| Yukon | 5% GST | GST only. |
| Ontario | 13% HST | Harmonized tax for Ontario taxable supplies. |
| Nova Scotia | 14% HST | CRA rate for supplies on or after April 1, 2025. |
| New Brunswick | 15% HST | Harmonized tax for New Brunswick taxable supplies. |
| Newfoundland and Labrador | 15% HST | Harmonized tax for Newfoundland and Labrador taxable supplies. |
| Prince Edward Island | 15% HST | Harmonized tax for Prince Edward Island taxable supplies. |
What This Calculator Does Not Replace
GST/HST math is simple, but tax treatment is not always simple. Classification, exemption status, invoice timing, place of supply, and credit eligibility can all change the final filing answer.
| Limit | What to verify |
|---|---|
| India HSN/SAC classification | Product or service classification controls the real GST rate. The calculator cannot classify the supply for you. |
| India cess and reverse charge | Compensation cess, reverse charge, composition levy, e-invoicing, and blocked credits are not modeled. |
| Canada PST, RST, and QST | Non-harmonized provincial sales taxes are separate from GST/HST and are intentionally excluded. |
| Filing return rules | This is a transaction estimate, not a GST/HST return, GSTR-3B, GST/HST NETFILE, or account reconciliation. |
Keep the research moving with VAT Calculator, India Income Tax Calculator, Canada CPP/EI Calculator, and Tax Calculators.
Frequently Asked Questions
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- 1.GST Council - GST rates(Accessed May 2026)
- 2.CBIC - GST goods and services rates(Accessed May 2026)
- 3.GST Council press release on GST rate rationalisation(Accessed May 2026)
- 4.Canada Revenue Agency - GST/HST rates and place of supply(Accessed May 2026)