Each calculator starts with the practical question a Canadian user is trying to answer: contribution room, tax estimate, mortgage payment, dividend income, savings path, or household budget. We then map the required inputs, identify the governing Canadian assumptions, and keep the calculation client-side wherever possible.
Estimates are intentionally simplified. A TFSA room estimate cannot see every recent transaction, an RRSP refund estimate cannot know the user's full tax return, and a mortgage affordability estimate cannot replace lender underwriting. The page should explain what is modeled, what is assumed, and what should be verified with official records or a qualified professional.
For rule-based calculators, we check formulas and limits against official sources. For scenario calculators, we disclose that returns, rates, inflation, and timing are user assumptions rather than predictions. Before publishing or updating a calculator, we test common cases, zero or edge values, mobile layout, and whether the result explanation still matches the formula.
Updates are prioritized when CRA limits, tax brackets, mortgage rules, Bank of Canada data sources, CMHC/FCAC guidance, or core assumptions change. Pages that cannot be kept current or that do not contain enough original explanation should be improved or noindexed rather than treated as finished core content.
The founder-operated process and current credentials limits are explained on the Founder Transparency page. The site should not imply external review unless that review has actually happened.
If you find a stale rule, broken source, unclear caveat, or calculator result that looks wrong, use the Corrections and Updates page to report it with the affected URL and enough detail to reproduce the issue.