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
Does California tax ESOP distributions?
Distributions are generally taxable per federal/state rules; timing/character matters.
Do I owe use tax on online purchases?
Yes—CA use tax may be due on untaxed out-of-state purchases; it’s reported on the return.
Are stock options/supplemental wages handled specially?
Employers may use supplemental withholding methods; totals still flow into CA taxable income.
What is CalEITC?
California’s Earned Income Tax Credit for low-to-moderate earners; eligibility depends on income and filing status.
I moved mid-year—how is CA tax handled?
Use part-year rules; apportion income between states and file CA as part-year resident if applicable.
Important Notes
All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.