# Sales Tax Calculator — Canada

> 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. CAD planning view; stated limitations apply.

Page: https://askcalculators.com/ca/sales-tax/
Definition: https://askcalculators.com/ca/sales-tax/definition.json
JSON Schema: https://askcalculators.com/ca/sales-tax/schema.json
Version: 20.16.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/ca/sales-tax/?amount=100&direction=exclusive&province=ON

## Inputs
- amount: Amount; type=money; required; default=100; min=0; max=1000000000000
- direction: Amount includes tax?; type=select; required; default=exclusive; values=exclusive|inclusive
- province: Canadian province/territory; type=select; required; default=ON; values=NL|PE|NS|NB|QC|ON|MB|SK|AB|BC|YT|NT|NU

## Outputs
- before: Price before tax; format=currency
- ratePercent: Combined rate used, %; format=number
- tax: Sales tax; format=currency
- total: Total including tax; format=currency; primary

## Formula
Exclusive tax = price × combined rate. Inclusive pretax price = total / (1 + combined rate).

Inputs are converted to canonical units before evaluating this stated formula.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: Illustrative defaults are not local quotes or verified legal rules. Dated reference components and user-entered assumptions are explicitly distinguished. Professional review is pending.