Implement EI and CPP payroll taxes#521
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MaxGhenis wants to merge 2 commits intoPolicyEngine:masterfrom
Open
Implement EI and CPP payroll taxes#521MaxGhenis wants to merge 2 commits intoPolicyEngine:masterfrom
MaxGhenis wants to merge 2 commits intoPolicyEngine:masterfrom
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Add Employment Insurance premiums and Canada Pension Plan contributions (CPP and CPP2) to achieve better parity with SPSD/M. Features: - EI premium calculations with 2024-2025 rates and maximums - CPP tier 1 contributions with proper basic exemption handling - CPP2 enhanced tier contributions for earnings above YMPE - Support for mixed employment and self-employment income - Comprehensive test coverage for all scenarios Parameters added: - EI rates (1.66% for 2024, 1.64% for 2025) and maximum insurable earnings - CPP rates, basic exemption ($3,500), and YMPE values - CPP2 rates (4% for both years) and YAMPE values This brings PolicyEngine Canada closer to SPSD/M coverage for payroll taxes. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
- Correct EI maximum insurable earnings for 2025 to ,700 - Update test case to use correct 2025 maximum value - All payroll tax parameters now verified against official CRA sources 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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Summary
This PR implements Employment Insurance premiums and Canada Pension Plan contributions (both tier 1 and tier 2/enhanced) to achieve better parity with SPSD/M coverage.
Implementation Details
Employment Insurance (EI)
Canada Pension Plan (CPP) Tier 1
Canada Pension Plan (CPP2) Enhanced Tier
Key Features
Testing
All tests pass:
References
Related Issues
Part of the effort to achieve parity with Statistics Canada's SPSD/M. See also:
🤖 Generated with Claude Code
Co-Authored-By: Claude noreply@anthropic.com