California Tax Calculator
Quick Access Tools
Input key: F Used in Federal tax calculations S Used in State tax calculations
Filing Information Quick Inputs Income Details Deductions & Adjustments State Options IRA, Pensions & Annuities Withholdings
Common California Forms & Schedules
Browse the essential California Franchise Tax Board forms used by individuals and corporations, including Form 540 (Individual), Form 100 (Corporation), and key schedules for credits, business income, and withholding. Links will appear below when calculators are available.- California Form 3544 Election to Assign Credit Within Combined Reporting Group
- California Form 3521 Low-Income Housing Credit
- California Form 540esins Instructions for Form 540-ES Estimated Tax For Individuals
- California Form 100sp Alternative Minimum Tax and Credit Limitations — Corporations
- California Form 593e Real Estate Withholding — Computation of Estimated Gain or Loss
- California Form 3806 Los Angeles Revitalization Zone Net Operating Loss (NOL) Carryover Deduction
- California Form 540sd Sales of Business Property
- California Form 100 California Corporation Franchise or Income Tax Return
Frequently Asked Questions
How does community property affect my CA return?
Married/RDP filers may have community property allocation rules; see CA guidance.
Are employer retirement contributions taxed by CA?
Pre-tax 401(k)/403(b) contributions reduce federal and generally CA taxable wages.
Is there a separate Medicare surtax in CA?
Additional Medicare is federal; California PIT is separate and applies via its own brackets/credits.
Does CA tax out-of-state remote work?
CA generally taxes income earned while working in CA; non-CA work may be non-CA source—track days/location.
Can I deduct mortgage interest in CA?
Often yes, subject to CA limits/adjustments; compare standard vs itemized for CA.
Important Notes
All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.