Canada version
How it works
Add or extract general retail tax with dated Canadian rates or a US state/base reference plus your separately verified local component. A population-weighted state average is never used as a transaction rate.
This is the Canada planning view, with monetary inputs and outputs in CAD. A currency label does not establish that a tax rate, construction price, coverage rule or legal limit has been verified locally. The inputs and limitations below describe the actual scope.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
3-
?amount=AmountMoney · Required · Default: 100
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?direction=Amount includes tax?Choice · Required · Default: exclusive · Accepted values: exclusive, inclusive
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?province=Canadian province/territoryChoice · Required · Default: ON · Accepted values: NL, PE, NS, NB, QC, ON, MB, SK, AB, BC, YT, NT, NU
Outputs
4-
beforePrice before taxCurrency · Currency: CAD
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ratePercentCombined rate used, %Number
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taxSales taxCurrency · Currency: CAD
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totalTotal including taxCurrency · Primary output · Currency: CAD
Formula
Exclusive tax = price × combined rate. Inclusive pretax price = total / (1 + combined rate).
Calculations retain numeric precision internally. Displayed values are rounded for readability. Quantities that must be purchased as whole units are rounded up only where the formula explicitly requires it.
Read the inputs before calculating
- Amount: Enter the quantity described by the label.
- Amount includes tax?: Enter the quantity described by the label.
- Canadian province/territory: Enter the quantity described by the label.
Reproducible worked example
The following is a fictional arithmetic example, not a local quote, a verified claimant or a market forecast. Its values are included so the formula can be checked. The form does not automatically confirm any verification checkbox.
Purchase location, date, taxable item and local/district amount independently verified: assumed confirmed solely for this fictional demonstration
| Input | Example value |
|---|---|
| Amount | 100 |
| Amount includes tax? | exclusive |
| Canadian province/territory | ON |
| Output | Calculated result |
|---|---|
| Price before tax | CAD 100 |
| Combined rate used, % | 13 |
| Sales tax | CAD 13 |
| Total including tax | CAD 113 |
Interpreting a changed assumption
Start with one complete scenario and change only one input when diagnosing a difference. Recheck units, the period of every rate, whether an amount is recurring or one-off, and whether a cost is already included elsewhere. A larger calculated benefit is not evidence that an assumption is more likely to occur.
Limitations
- Planning calculation, not a tax return, benefit decision, credit approval or legal opinion. No eligibility is inferred from a numeric result.
- Only the stated tax year and expressly supported rule components are included. Entered amounts require independent verification.
- Canada: general GST/HST plus PST/QST as checked 2026-09-24; both components use the same taxable base in this model. Nova Scotia HST is 14%.
- Exempt/zero-rated items, special vehicle taxes, caps, holidays, sourcing exceptions, different component tax bases and reduced-rate zones require independent checking. This worksheet does not decide eligibility.
Frequently asked questions
What does this Sales Tax result represent?
Add or extract general retail tax with dated Canadian rates or a US state/base reference plus your separately verified local component. A population-weighted state average is never used as a transaction rate. It applies the displayed formula to your inputs; it does not infer omitted facts.
Are the starting amounts verified Canada prices or legal rules?
No. Numeric defaults are illustrative unless an input or dated reference explicitly identifies a researched component. Currency is CAD; local quotes, eligibility and unsupported rules must be entered and verified separately.
What must I check before relying on the result?
Planning calculation, not a tax return, benefit decision, credit approval or legal opinion. No eligibility is inferred from a numeric result. Only the stated tax year and expressly supported rule components are included. Entered amounts require independent verification.
Can I compare or share different assumptions?
Change one assumption at a time and use the browser-local project or share controls. A shared URL contains the encoded input values; do not include information you do not wish to disclose.
Sources and reference scope
- CA income authority — retrieved 2026-09-24. Use only the expressly supported schedule components; this link does not validate unrelated taxes.
- CRA general GST/HST/PST rates — retrieved 2026-09-24. General retail rates, not product-specific exemptions.
These references support only their stated scope. They are not evidence that every local rule or price needed by the master expansion has been loaded.