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.- California Tax Form 100
California Corporation Franchise Or Income Tax Return - California Tax Form 100S
California Corporation Franchise Or Income Tax Return - California Tax Form 100SH
Dividend Income Deduction - California Tax Form 100SP
Alternative Minimum Tax And Credit Limitations — Corporations - California Tax Form 100SR
Apportionment And Allocation Of Income - California Tax Form 100SSB
S Corporation Depreciation And Amortization - California Tax Form 100SSD
S Corporation Capital Gains And Losses And Built In Gains - California Tax Form 100SSH
S Corporation Dividend Income Deduction - California Tax Form 100SSK
Shareholder’s Share Of Income, Deductions, Credits, Etc. - California Tax Form 100SSQS
Qualified Subchapter S Subsidiary (QSub) Information - California Tax Form 100W
California Corporation Franchise Or Income Tax Return - California Tax Form 100WSH
Dividend Income Deduction — Water’s Edge Filers - California Tax Form 100WSP
Alternative Minimum Tax And Credit Limitations — Water’s Edge Filers - California Tax Form 100X
Amended Corporation Franchise Or Income Tax Return - California Tax Form 100ES-INSTRUCTIONS
Instructions For Form 100 ES - California Tax Form 540ESINS
Instructions For Form 540 ES Estimated Tax For Individuals - California Tax Form 540SD
Sales Of Business Property - California Tax Form 570
Nonadmitted Insurance Tax Return - California Tax Form 587
Nonadmitted Insurance Tax Return - California Tax Form 589
Nonresident Reduced Withholding Request - California Tax Form 593E
Real Estate Withholding — Computation Of Estimated Gain Or Loss - California Tax Form 593INS
Instructions For Form 593 - California Tax Form 2416
Schedule Of Included Controlled Foreign Corporations (CFC) - California Tax Form 2424
Water's Edge Foreign Investment Interest Offset - California Tax Form 3503
Natural Heritage Preservation Credit - California Tax Form 3507
Natural Heritage Preservation Credit - California Tax Form 3511
Natural Heritage Preservation Credit - California Tax Form 3521
Low Income Housing Credit - California Tax Form 3523
Research Credit - California Tax Form 3531
California Competes Tax Credit - California Tax Form 3539C
Instructions For Form FTB 3539 - California Tax Form 3540
Credit Carryover And Recapture Summary - California Tax Form 3541
California Motion Picture And Television Production Credit - California Tax Form 3544
Election To Assign Credit Within Combined Reporting Group - California Tax Form 3544A
Election To Assign Credit Within Combined Reporting Group - California Tax Form 3546
Enhanced Oil Recovery Credit - California Tax Form 3547
Enhanced Oil Recovery Credit - California Tax Form 3548
Enhanced Oil Recovery Credit - California Tax Form 3554
New Employment Credit - California Tax Form 3592
Enhanced Oil Recovery Credit - California Tax Form 3593
Extension Of Time For Payment Of Taxes By A Corporation Expecting A Net Operating Loss Carryback - California Tax Form 3725
Assets Transferred From Corporation To Insurance Company - California Tax Form 3726
Deferred Intercompany Stock Account (DISA) And Capital Gains Information - California Tax Form 3726I
Instructions For Form 3726 - California Tax Form 3801
Passive Activity Loss Limitations - California Tax Form 3801CR
Instructions For Form FTB 3801 CR - California Tax Form 3802
Corporate Passive Activity Loss And Credit Limitations - California Tax Form 3805E
Installment Sale Income - California Tax Form 3805Q
Net Operating Loss (NOL) Computation And NOL And Disaster Loss Limitations — Corporations - California Tax Form 3805Z
Enterprise Zone Deduction And Credit Summary - California Tax Form 3806
Los Angeles Revitalization Zone Net Operating Loss (NOL) Carryover Deduction - California Tax Form 3807
Enterprise Zone Deduction And Credit Summary - California Tax Form 3808
Manufacturing Enhancement Area Credit Summary - California Tax Form 3809
Enterprise Zone Deduction And Credit Summary - California Tax Form 3814
New Donated Fresh Fruits Or Vegetables Credit - California Tax Form 3834
Interest Computation Under The Look Back Method For Completed Long Term Contracts - California Tax Form 3885
Corporation Depreciation And Amortization - California Tax Form 5806
Underpayment Of Estimated Tax By Corporations - California Tax Form 8453C
California E File Return Authorization For Corporations
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
Are commissions/bonuses taxed differently in CA?
Withholding may use supplemental methods; final CA tax is based on total taxable income.
How does AMT work in California?
CA has its own AMT regime and adjustments; higher-income filers should check exposure.
How are RSUs/ESPP handled for CA tax?
Equity compensation is generally taxed as wage income when included in W-2; CA sources based on work.
Can I add extra CA withholding to smooth refunds?
Yes—enter additional withholding and rerun to see impact on take-home and refund.
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.