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California State Tax Forms & Schedules for 2026

The tax forms on this page can be essential for your California state tax return. Each form automatically calculates the relevant deductions and tax amounts based on the 2026 California State tax tables.

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California Tax Forms

The tax forms below are for California State tax return calculations. Each form will automatically calculate the relevant tax deductions and amount based on the 2026 California State tax tables

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.

Tip: Use the California Tax Calculator to fine-tune your refundable and non-refundable tax credits. Complete, calculate, print, and save your tax calculation for later use.

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.