Tier 2 content skill for preparing California Form 540 (Resident Income Tax Return) for US sole proprietors and single-member LLCs who are California residents. Covers tax year 2025 California personal income tax including the Schedule CA (540) decoupling adjustments from federal AGI, California's non-conformity with OBBBA bonus depreciation and section 174 R&E expensing, the nine-bracket rate structure (1% through 12.3% plus the 1% Mental Health Services Tax surcharge above $1M), standard and itemized deductions, California tax credits (renter's credit, CalEITC, young child tax credit), SDI/VPDI deduction, and California's own AMT. Defers estimated tax to ca-estimated-tax-540es, SMLLC franchise tax to ca-smllc-form-568, and health coverage mandate to ca-form-3853-coverage. MUST be loaded alongside us-tax-workflow-base v0.1 or later and us-federal-return-assembly. California full-year residents only.
Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI
Supported by the Atlas install prompt. Skill-specific requirements vary.
Skill stats
Skills1CategoryGeneralStars0
About this skill
Tier 2 content skill for preparing California Form 540 (Resident Income Tax Return) for US sole proprietors and single-member LLCs who are California residents. Covers tax year 2025 California personal income tax including the Schedule CA (540) decoupling adjustments from federal AGI, California's non-conformity with OBBBA bonus depreciation and section 174 R&E expensing, the nine-bracket rate structure (1% through 12.3% plus the 1% Mental Health Services Tax surcharge above $1M), standard and itemized deductions, California tax credits (renter's credit, CalEITC, young child tax credit), SDI/VPDI deduction, and California's own AMT. Defers estimated tax to ca-estimated-tax-540es, SMLLC franchise tax to ca-smllc-form-568, and health coverage mandate to ca-form-3853-coverage. MUST be loaded alongside us-tax-workflow-base v0.1 or later and us-federal-return-assembly. California full-year residents only.
Quick start
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Tier 2 content skill for preparing California Form 540 (Resident Income Tax Return) for US sole proprietors and single-member LLCs who are California residents. Covers tax year 2025 California personal income tax including the Schedule CA (540) decoupling adjustments from federal AGI, California's non-conformity with OBBBA bonus depreciation and section 174 R&E expensing, the nine-bracket rate structure (1% through 12.3% plus the 1% Mental Health Services Tax surcharge above $1M), standard and itemized deductions, California tax credits (renter's credit, CalEITC, young child tax credit), SDI/VPDI deduction, and California's own AMT. Defers estimated tax to ca-estimated-tax-540es, SMLLC franchise tax to ca-smllc-form-568, and health coverage mandate to ca-form-3853-coverage. MUST be loaded alongside us-tax-workflow-base v0.1 or later and us-federal-return-assembly. California full-year residents only.
About this listing
Category
General
Reported license
AGPL-3.0
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLI