Act as a Certified Canadian Payroll Manager with expertise in CRA (Canada Revenue Agency) regulations and provincial employment standards. Analyze the following Canadian payroll scenario and provide a comprehensive deduction breakdown with compliance validation.

**EMPLOYEE & PAYROLL DATA:**
- Province/Territory of Employment: [EMPLOYEE_PROVINCE]
- Tax Year: [TAX_YEAR] (e.g., 2024)
- Pay Period End Date: [PAY_DATE]
- Pay Frequency: [PAY_FREQUENCY] (Weekly/Bi-weekly/Semi-monthly/Monthly)
- Gross Employment Income (this period): $[GROSS_PAY]
- Year-to-Date Gross Earnings: $[YTD_EARNINGS]
- Year-to-Date CPP Contributions: $[CPP_YTD] (enter 0 if new employee)
- Year-to-Date EI Premiums: $[EI_YTD] (enter 0 if new employee)
- Federal TD1 Claim Code: [FEDERAL_CLAIM_CODE] (1-10 or X)
- Provincial/Territorial Claim Code: [PROVINCIAL_CLAIM_CODE]
- Taxable Benefits & Allowances: $[TAXABLE_BENEFITS] (car allowance, insurance, etc.)
- Pre-tax Deductions (RPP, union dues, pension): $[PRE_TAX_DEDUCTIONS]
- Post-tax Deductions: $[POST_TAX_DEDUCTIONS]
- Additional Context: [ADDITIONAL_INFO] (e.g., "turning 18 this year", "over 65", "disability", "commission sales")

**ANALYSIS INSTRUCTIONS:**

1. **Calculate Deductions:**
   - Determine taxable income: Gross Pay + Taxable Benefits - Pre-tax Deductions
   - Calculate Federal Income Tax using [TAX_YEAR] federal tax brackets and the provided claim code
   - Calculate [EMPLOYEE_PROVINCE] Provincial/Territorial Income Tax using current rates and surtaxes
   - Calculate CPP/QPP contributions (accounting for $3,500 basic exemption prorated by pay periods)
   - Calculate EI premiums (1.66% employee share for 2024, max insurable earnings $63,200)
   - Include QPIP (0.494%) and QPP if [EMPLOYEE_PROVINCE] is Quebec
   - Subtract Post-tax deductions to arrive at Net Pay

2. **Compliance Validation:**
   - Verify CPP calculation respects annual maximum pensionable earnings ($68,500 for 2024, $71,300 for 2025)
   - Verify EI calculation respects annual maximum insurable earnings ($63,200 for 2024)
   - Flag any potential over-contributions based on YTD amounts provided
   - Check for common errors: incorrect exemption application, wrong province rates, claim code mismatches, age-related CPP exemptions (under 18/over 70)
   - Validate against known basic personal amounts and bracket thresholds

3. **Provincial Specifics:**
   - Note any province-specific employer costs (Ontario EHT, BC EHT, etc.)
   - Identify unique provincial tax credits or surtaxes (e.g., Ontario Health Premium, Nova Scotia surtax, Quebec abatements)
   - Highlight territory-specific calculations (Northwest Territories, Nunavut, Yukon) if applicable

4. **Output Structure:**
   - **Summary Table**: Column headers: Description | Amount | YTD Accumulated | Notes
   - **Calculation Methodology**: Show your math for CPP exemption (3,500 ÷ pay periods × periods elapsed) and taxable income
   - **Compliance Flags**: Use 🟢 Valid / 🟡 Warning (approaching limits) / 🔴 Error (over-contribution or calculation issue)
   - **CRA References**: Cite relevant payroll deduction formulas or PDOC validation steps
   - **Action Items**: Specific recommendations for payroll adjustments if discrepancies found

**IMPORTANT CONSTRAINTS:**
- Use 2024 tax year rates unless [TAX_YEAR] specifies otherwise
- Account for the $3,500 CPP basic exemption on a prorated basis per pay period
- Remember that Quebec uses QPP (higher rate than CPP) and adds QPIP
- Do not calculate employer portions unless requested in [ADDITIONAL_INFO], but note them for context
- Include disclaimer that this is for verification purposes and official CRA PDOC should be used for final remittances

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