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Calculate federal and provincial income tax for all 13 Canadian provinces and territories. 2026 brackets. Pure offline calculation. Get a quick, honest answer to 'how much tax will I owe?' without leaving the browser. This extension calculates Canadian income tax for the current year using official federal brackets combined with your province's brackets. It shows your total tax, after-tax income, effective rate, and marginal rate - plus a per-bracket breakdown so you can see exactly where your money goes. Use it for: - Quick sanity-checking your paycheque or take-home estimate - Comparing how much tax you'd pay if you moved provinces - Understanding what a raise actually puts in your pocket after the marginal rate kicks in - Sizing up a freelance contract or side-income gig before accepting What it does NOT include (yet - those are in Pro): - CPP/QPP and EI premiums - Surtaxes (Ontario, PEI) - Tax credits, deductions, or basic personal amounts - RRSP, FHSA, or TFSA contribution optimization The free tier covers the 2026 tax year with full bracket math for every Canadian province and territory. Pro upgrade (one-time $19) adds multi-year comparison (2024-2026), RRSP/FHSA optimization scenarios, capital-gains modelling, and bonus or severance tax planning. 100% client-side: your income data never leaves your browser. No analytics. No telemetry. Estimate only - for exact filing, use certified software or work with a CPA. Built by Auburn AI, a Calgary-based independent. Support: alexander@auburnai.ca