Sources & Methodology

Sources & Methodology

Every figure in our calculators comes from an official, published source. We never guess or invent tax rates, brackets, or contribution limits.

Primary sources

  • Canada Revenue Agency (CRA) — T4127 Payroll Deductions Formulas, T4032 Payroll Deductions Tables, and published federal and provincial/territorial tax brackets
  • Revenu Québec — Quebec provincial tax brackets, QPP and QPIP contribution rates and maximums
  • Employment and Social Development Canada (ESDC) — annual EI premium rate announcements
  • Retraite Québec — QPP contribution rates and maximum pensionable earnings
  • 2026 figures used

    • Federal and provincial/territorial income tax brackets and basic personal amounts
    • CPP base rate (5.95%) and CPP2 rate (4%), with YMPE ($74,600) and YAMPE ($85,000)
    • QPP base rate (6.30%) and QPP2 rate (4%) for Quebec
    • EI premium rate (1.63% outside Quebec, 1.30% in Quebec) and maximum insurable earnings ($68,900)
    • QPIP premium rate (0.430%) and maximum insurable earnings ($103,000) for Quebec
    • What our calculators don’t account for

      Our calculators assume a standard basic personal amount (no custom TD1 claim), no additional tax credits, and no employer-specific benefit deductions. Actual payroll may differ based on your specific circumstances.

      Review schedule

      Tax year: 2026. Last reviewed: September 2026. We review and update our figures when CRA, Revenu Québec, or ESDC publish new rates, typically at the start of each calendar year and again mid-year if interim updates are issued.

      This is an independent calculator, not affiliated with the CRA, Revenu Québec, or any government body. See our Disclaimer for more.