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Sources

Last updated

This page is the master index of every primary source LoonieCalc cites, with the last date we verified each URL was reachable and current. The data is generated directly from data/sources.json in the repository — adding a new calculator that depends on a new authority requires adding the authority here first.

Each individual calculator page also lists the specific subset of these sources it relies on, in a "Sources" block at the bottom of the page. The methodology by which we verify and update these sources is at looniecalc.ca/methodology.

17 primary sources indexed. Master file last reviewed: April 29, 2026.

Federal sources

Sources published by Canadian federal authorities and federally-mandated Crown corporations.

Provincial sources

Provincial finance-ministry publications and provincial Crown agency pages, organized by province.

Alberta

British Columbia

Nova Scotia

  • Nova Scotia personal income tax rates and indexation — Government of Nova Scotia. Last verified . Added 2026-04-29 during Phase 2 ci:gate verification. Replaces the older novascotia.ca/finance/.../personalincometax.html slug (now 404). Cross-corroborated values vs data/tax-brackets-2026.json NS entry — exact match on every bracket and the BPA, including 2026 indexation factor 1.6% (OIC 2025-274).

Ontario

  • Ontario personal income tax rates and credits — Government of Ontario (Open Data Catalogue). Last verified . Updated 2026-04-29 from /page/personal-income-tax (now 404). Open Data Catalogue is the canonical Ontario primary source for tax bracket data — publishes downloadable Excel + JSON.
  • Ontario Land Transfer Tax — Government of Ontario. Last verified .

Quebec

  • Revenu Québec — Gouvernement du Québec. Last verified .

Why these sources

Three rules govern what counts as a primary source on this site:

  • The publisher is the legislative or regulatory authority. For tax brackets, this is the Canada Revenue Agency or the relevant provincial finance ministry — not a tax-software vendor that reproduces the brackets, even when its values match. For mortgage stress-test rules, this is OSFI directly — not a bank that summarises OSFI's guideline.
  • The URL points at a stable, regulator-controlled page. Where the regulator publishes both a press release and a permanent regulatory page, we cite the permanent page. Press releases get archived; permanent guideline pages do not.
  • The page must be machine-checkable. Every URL on this index is checked weekly by an automated job (scripts/check-source-urls.mjs); a source that goes 404 or stops returning a 2xx/3xx response is escalated and either replaced with the regulator's current canonical page or, if the regulator has discontinued publication, removed from the site along with the calculator that depended on it.

Reporting a broken or outdated source

If you visit a source URL above and find it broken or pointing at significantly different content than its description suggests, email hello@looniecalc.ca with the source title and what you observed. Source-URL corrections are treated with the same priority as calculation errors — see editorial integrity for our correction policy.