California Small Business Taxes: The Employer’s 2025 Guide

California offers a vibrant environment for business, with over 4.3 million small businesses employing almost half of the state’s workforce. Whether you’re an established business owner or planning to start a new venture, understanding the tax landscape in California is crucial. This guide provides an overview of the various taxes small businesses in California must navigate, including tax rates, filing requirements, and deadlines.

Types of Business Taxes in California

Business owners in California may be subject to various taxes depending on their business structure, activities, and revenue. Here’s a breakdown of the main types of taxes:

  • Corporate Income Tax

    • Applicable Entities: C corporations, LLCs with C corp elections

    • Tax Rate: 8.84%

    • Filing Requirements: File Form 100 by the 15th day of the fourth month after the tax year ends.

    • Estimated Payments: Payments are due by the 15th day of the fourth, sixth, ninth, and 12th months of the tax year.

  • S Corporation Tax

    • Applicable Entities: S corporations

    • Tax Rate: 1.5%

    • Filing Requirements: File Form 100S by the 15th day of the third month after the close of the tax year.

    • Estimated Payments: Payments are due by the 15th day of the fourth, sixth, ninth, and 12th months of the tax year.

  • LLC Annual Tax

    • Applicable Entities: LLCs

    • Tax Rate:$800

    • Filing Requirements: File Form FTB 3522 by the 15th day of the fourth month of the tax year.

  • LLC Fee

    • Applicable Entities: LLCs that will make more than $250,000 in a tax year

    • Tax Rate:Flat fee ranging from $900 to $11,790 based on total California income

    • Filing Requirements: File Form FTB 3536 by the 15th day of the sixth month of the current tax year.

  • Pass-Through Entity (PTE) Tax

    • Applicable Entities: Entities taxed as S corporations or partnerships

    • Tax Rate: 9.3% of qualified net income (the sum of the pro rata or distributive share and guaranteed payments of each qualified taxpayer’s income subject to California personal income tax)

    • Filing Requirements: File the first payment on or before June 15th during the tax year of the election and the second payment on or before the due date of the original return without regard to extensions. Use Form FTB 3893.

  • Alternative Minimum Tax

    • Applicable Entities: C corps and LLCs with C corp electionsthat don’t report a net income

    • Tax Rate: 6.65%

    • Filing Requirements: File Schedule P (100) with Form 100 by the 15th day of the fourth month after the tax year ends.

  • Franchise Tax

    • Applicable Entities: C corps,S corps, LLCs, limited partnerships (LPs), and limited liability partnerships (LLPs)

    • Tax Rate for C Corps, LLCs with C Corp elections, LPs, and LLPs: $800

    • Tax Rate for S Corps: 1.5% of net income or the minimum of $800, whichever is larger 

    • Tax Rate for LLCs: Minimum $800, up to $11,790 based on income 

    • Filing Requirements: C corps and LLCs must file by the 15th day of the fourth month after the close of the tax year.S corps,LPs, and LLPs must file by the 15th day of the third month after the close of their tax year.  

  • Sales and Use Tax

    • Applicable Activities: Retail sales of tangible personal property

    • Tax Rate: The statewide rate is 7.25% (local rates may vary)

    • Filing Requirements: File Form CDTFA-401-A monthly, quarterly, or annually based on sales volume.

  • Withholding Tax

    • Applicable Entities: Employers with employees

    • Tax Rate: Varies based on Employee’s Withholding Allowance Certificate (Form DE 4)

    • Filing Requirements: File quarterly returns (Form DE 9 and Form DE 9C) by January 1, April 1, July 1, and October 1. More frequent deposits are required when more than $350 in personal income tax is withheld.

  • Unemployment Insurance Tax

    • Applicable Entities: Employers with employees

    • Tax Rate: Varies based on the business’s experience rating

    • Wage Base: First $7,000 per employee per year

    • Filing Requirements: File quarterly returns (Form DE 9 and Form DE 9C) by January 1, April 1, July 1, and October 1.

  • Employment Training Tax

    • Applicable Entities: Employers with employees

    • Tax Rate: 0.01%

    • Wage Base: First $7,000 per employee per year

    • Filing Requirements: File quarterly returns (Form DE 9 and Form DE 9C ) by January 1, April 1, July 1, and October 1.

  • Business Personal Property Tax

    • Applicable Entities: Businesses using personal property

    • Tax Rate: 1% of value

    • Filing Requirements: If notified, file the Business Property Statement by the specified date.

  • Nonresident Withholding Tax

    • Applicable Entities: Pass-through entities with nonresident members

    • Tax Rate: 7% of the gross payment or distribution amount that’s more than $1,500 in a calendar year

    • Filing Requirements: File Form 592-Q quarterly by April 15, June 15, September 15, and January 15.

How to File and Pay California Business Taxes

Business taxes in California can be filed and paid through various methods.

Franchise Tax Board

PO Box 942857

Sacramento CA 94257-0631

Important Deadlines

Keep track of these key dates to avoid penalties:

  • Corporate Income Tax Returns: Due by the 15th day of the fourth month after the tax year ends

  • Estimated Tax Payments: Due quarterly on the 15th day of the fourth, sixth, ninth, and 12th month of the tax year

  • Sales and Use Tax Returns: Monthly, quarterly, or annual filing based on sales volume

  • Withholding Tax Returns: Due quarterly by January 1, April 1, July 1, and October 1

  • Unemployment Insurance Reports: Due quarterly by January 1, April 1, July 1, and October 1

  • Franchise Tax Returns: Due the 15th day of the fourth month after the tax year ends

  •  for C corps and LLCs.Due by the 15th day of the third month after the tax year ends for S corps,LPs, and LLPs

  • AMT Returns: Due by the 15th day of the fourth month after the tax year ends

Gusto | Online Payroll Services, HR, and Benefits

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Tax Credits and Incentives

California offers several tax credits and incentives for small businesses, including:

  • California Competes Tax Credit: This is available to businesses of any industry, size, or location that want to locate, stay, or grow in California. Applicants are evaluated based on 14 different factors, including the number of full-time jobs being created, the amount of investment, and strategic importance to the state or region.

  • New Employment Tax Credit: This is available to companies that hire qualified full-time employees within designated geographic areas.

  • Research and Development Tax Credit: This is available to businesses that paid for or incurred qualified research expenses while conducting qualified research activity in California. Qualified research expenses include wages, supplies, and contract research costs.

Check out our article on California tax incentives for more information. 

California’s business tax breakdown by business type

Business taxes can get complicated, so below, we’ve included a chart that breaks down which taxes different business structures usually pay. 

Keep in mind that pass-through entities don’t pay federal income taxes themselves—the obligation is passed on to their business owners or shareholders, who pay them through their personal income tax returns. 

Business type

Personal income tax

Corporate income tax

Franchise tax

PTE tax

Sales and use tax

Withholding tax

Unemployment tax

Federal income taxes

C corp

No 

Yes 

Yes

No

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes

S corp

Yes (pass-through), if not making the PTE election

Yes

Yes

Yes, if elect

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes (pass-through)

LLC

Yes (pass-through), if not making the PTE election

Yes, with C corp election

Yes

Yes, if treated as partnership and elect

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes (pass-through)

Partnership 

Yes (pass-through), if not making the PTE election

No

Yes, if LP or LLP

Yes, if elect

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes (pass-through)

Sole proprietorship

Yes (pass-through)

No 

No

No

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes, by way of individual income tax

As a business owner, your time and energy are valuable, finite resources. Gusto can save you time and provide peace of mind. Our easy-to-use software automatically files all your payroll taxes each time you run payroll—freeing up your bandwidth for the work that matters most. 

Learn how Gusto can simplify the operations of your small business by creating an account today. 

California Small Business Taxes: The Employer’s 2024 Guide

California offers a vibrant environment for business, with over 4.1 million small businesses employing almost half of the state’s workforce. Whether you’re an established business owner or planning to start a new venture, understanding the tax landscape in California is crucial. This guide provides an overview of the various taxes small businesses in California must navigate, including tax rates, filing requirements, and deadlines.

Types of Business Taxes in California

Business owners in California may be subject to various taxes depending on their business structure, activities, and revenue. Here’s a breakdown of the main types of taxes:

  • Corporate Income Tax

    • Applicable Entities: C corporations, LLCs with C corp elections

    • Tax Rate: 8.84%

    • Filing Requirements: File Form 100 by the 15th day of the fourth month after the tax year ends.

    • Estimated Payments: Payments are due by the 15th day of the fourth, sixth, ninth, and 12th months of the tax year.

  • S Corporation Tax

    • Applicable Entities: S corporations

    • Tax Rate: 1.5%

    • Filing Requirements: File Form 100S by the 15th day of the third month after the close of the tax year.

    • Estimated Payments: Payments are due by the 15th day of the fourth, sixth, ninth, and 12th months of the tax year.

  • LLC Annual Tax

    • Applicable Entities: LLCs

    • Tax Rate:$800

    • Filing Requirements: File Form FTB 3522 by the 15th day of the fourth month of the tax year.

  • LLC Fee

    • Applicable Entities: LLCs that will make more than $250,000 in a tax year

    • Tax Rate:Flat fee based on total California income

    • Filing Requirements: File Form FTB 3536 by the 15th day of the sixth month of the current tax year.

  • Pass-Through Entity (PTE) Tax

    • Applicable Entities: Entities taxed as S corporations or partnerships

    • Tax Rate: 9.3% of qualified net income (the sum of the pro rata or distributive share and guaranteed payments of each qualified taxpayer’s income subject to California personal income tax)

    • Filing Requirements: File the first payment on or before June 15th during the tax year of the election and the second payment on or before the due date of the original return without regard to extensions. Use Form FTB 3893.

  • Alternative Minimum Tax

    • Applicable Entities: C corps and LLCs with C corp electionsthat don’t report a net income

    • Tax Rate: 6.65%

    • Filing Requirements: File Schedule P (100) with Form 100 by the 15th day of the fourth month after the tax year ends.

  • Franchise Tax

    • Applicable Entities: C corps,S corps, LLCs, limited partnerships (LPs), and limited liability partnerships (LLPs)

    • Tax Rate for C Corps, LLCs with C Corp elections, LPs, and LLPs: $800

    • Tax Rate for S Corps: 1.5% of net income or the minimum of $800, whichever is larger 

    • Tax Rate for LLCs: Minimum $800, up to $11,790 based on income 

    • Filing Requirements: C corps and LLCs must file by the 15th day of the fourth month after the close of the tax year.S corps,LPs, and LLPs must file by the 15th day of the third month after the close of their tax year.  

  • Sales and Use Tax

    • Applicable Activities: Retail sales of tangible personal property

    • Tax Rate: The statewide rate is 7.25% (local rates may vary)

    • Filing Requirements: File Form CDTFA-401-A monthly, quarterly, or annually based on sales volume.

  • Withholding Tax

    • Applicable Entities: Employers with employees

    • Tax Rate: Varies based on Employee’s Withholding Allowance Certificate (Form DE 4)

    • Filing Requirements: File quarterly returns (Form DE 9 and Form DE 9C) by January 1, April 1, July 1, and October 1. More frequent deposits are required when more than $350 in personal income tax is withheld.

  • Unemployment Insurance Tax

    • Applicable Entities: Employers with employees

    • Tax Rate: Varies based on business’s experience rating

    • Wage Base: First $7,000 per employee per year

    • Filing Requirements: File quarterly returns (Form DE 9 and Form DE 9C) by January 1, April 1, July 1, and October 1.

  • Employment Training Tax

    • Applicable Entities: Employers with employees

    • Tax Rate: 0.01%

    • Wage Base: First $7,000 per employee per year

    • Filing Requirements: File quarterly returns (Form DE 9 and Form DE 9C ) by January 1, April 1, July 1, and October 1.

  • Business Personal Property Tax

    • Applicable Entities: Businesses using personal property

    • Tax Rate: 1% of value

    • Filing Requirements: If notified, file the Business Property Statement by the specified date.

  • Nonresident Withholding Tax

    • Applicable Entities: Pass-through entities with nonresident members

    • Tax Rate: 7% of the gross payment or distribution amount that’s more than $1,500 in a calendar year

    • Filing Requirements: File Form 592-Q quarterly by April 15, June 15, Sept. 15, and January 15.

Gusto | Online Payroll Services, HR, and Benefits

Run payroll and benefits with Gusto

How to File and Pay California Business Taxes

Business taxes in California can be filed and paid through various methods.

Franchise Tax Board

PO Box 942857

Sacramento CA 94257-0631

Important Deadlines

Keep track of these key dates to avoid penalties:

  • Corporate Income Tax Returns: Due by the 15th day of the fourth month after the tax year ends

  • Estimated Tax Payments: Due quarterly on the 15th day of the fourth, sixth, ninth, and 12th month of the tax year

  • Sales and Use Tax Returns: Monthly, quarterly, or annual filing based on sales volume

  • Withholding Tax Returns: Due quarterly by January 1, April 1, July 1, and October 1

  • Unemployment Insurance Reports: Due quarterly by January 1, April 1, July 1, and October 1

  • Franchise Tax Returns: Due the 15th day of the fourth month after the tax year ends

  •  for C corps and LLCs.Due by the 15th day of the third month after the tax year ends for S corps,LPs, and LLPs

  • AMT Returns: Due by the 15th day of the fourth month after the tax year ends

Tax Credits and Incentives

California offers several tax credits and incentives for small businesses, including:

  • California Competes Tax Credit: This is available to businesses of any industry, size, or location that want to locate, stay, or grow in California. Applicants are evaluated based on 14 different factors, including number of full-time jobs being created, amount of investment, and strategic importance to the state or region.

  • New Employment Tax Credit: This is available to companies that hire qualified full-time employees within designated geographic areas.

  • Research and Development Tax Credit: This is available to businesses that paid for or incurred qualified research expenses while conducting qualified research activity in California. Qualified research expenses include wages, supplies, and contract research costs.

Check out our article on California tax incentives for more information. 

California’s business tax breakdown by business type

Business taxes can get complicated, so below, we’ve included a chart that breaks down which taxes different business structures usually pay. 

Keep in mind that pass-through entities don’t pay federal income taxes themselves—the obligation is passed on to their business owners or shareholders, who pay them through their personal income tax returns. 

Business type

Personal income tax

Corporate income tax

Franchise tax

PTE tax

Sales and use tax

Withholding tax

Unemployment tax

Federal income taxes

C corp

No 

Yes 

Yes

No

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes

S corp

Yes (pass-through), if not making the PTE election

Yes

Yes

Yes, if elect

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes (pass-through)

LLC

Yes (pass-through), if not making the PTE election

Yes, with C corp election

Yes

Yes, if treated as partnership and elect

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes (pass-through)

Partnership 

Yes (pass-through), if not making the PTE election

No

Yes, if LP or LLP

Yes, if elect

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes (pass-through)

Sole proprietorship

Yes (pass-through)

No 

No

No

Yes, if applicable

Yes, if you hire employees

Yes, if you hire employees

Yes, by way of individual income tax

As a business owner, your time and energy are valuable, finite resources. Gusto can save you time and provide peace of mind. Our easy-to-use software automatically files all your payroll taxes each time you run payroll—freeing up your bandwidth for the work that matters most. 

Learn how Gusto can simplify the operations of your small business by creating an account today. 

Paige Smith

Paige Smith

Paige is a content marketing writer specializing in business, finance, and tech. She regularly writes for a number of B2B industry leaders, including fintech companies and small business lenders. See more of her work here: