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California business deadlines for 2027: tax, filing, and payroll dates

The common 2027 due dates for California small businesses, month by month: estimated taxes, the $800 LLC tax, Form 568, sales tax, payroll, 1099s, and Los Angeles business tax.

These are the common dates for a business whose tax year is the calendar year. Dates that move to the next business day after a weekend are already moved; if a date lands on a holiday, check the agency. Your own dates depend on your business: when you formed, what you sell, and whether you have employees.

January 2027

  • Fri, Jan 1
    California minimum wage increase takes effectCA Dept. of Industrial Relations · California employers
  • Fri, Jan 15
    Owner's estimated tax, 4th quarter 2026IRS + CA Franchise Tax Board · Owners of LLCs taxed as sole proprietors or partnerships, S corporations, and sole proprietors

February 2027

  • Mon, Feb 1
    File sales and use tax return, Q4 2026CA Dept. of Tax and Fee Administration · Businesses with a seller's permit that file quarterly
  • Mon, Feb 1
    Quarterly payroll filings, Q4 2026IRS + CA EDD · Employers
  • Mon, Feb 1
    Send 1099-NEC and 1099-MISC forms for 2026IRS · Businesses that paid contractors or rent to individuals
  • Mon, Feb 1
    Year-end payroll for 2026: W-2s and Form 940IRS + SSA · Employers

March 2027

  • Mon, Mar 1
    Renew LA business tax registration for 2027City of Los Angeles Finance · Businesses in the City of Los Angeles
  • Mon, Mar 15
    File California LLC return (Form 568) for 2026CA Franchise Tax Board · LLCs (multi-member March 15, single-member April 15)
  • Mon, Mar 15
    File partnership return (Form 1065) for 2026IRS · Multi-member LLCs and partnerships
  • Mon, Mar 15
    File S-corp returns (1120-S + CA 100S) for 2026IRS + CA Franchise Tax Board · S corporations

April 2027

  • Thu, Apr 1
    File business property statement (Form 571-L)LA County Assessor · Businesses with business property in Los Angeles County (see who must file)
  • Thu, Apr 15
    Corporation estimated tax payment (Form 100-ES)CA Franchise Tax Board · Corporations
  • Thu, Apr 15
    File C-corp returns (1120 + CA 100) for 2026IRS + CA Franchise Tax Board · C corporations
  • Thu, Apr 15
    File California LLC return (Form 568) for 2026CA Franchise Tax Board · LLCs (multi-member March 15, single-member April 15)
  • Thu, Apr 15
    File personal returns with business income for 2026IRS + CA Franchise Tax Board · Sole proprietors and single-member LLC owners
  • Thu, Apr 15
    Owner's estimated tax, 1st quarter 2027IRS + CA Franchise Tax Board · Owners of LLCs taxed as sole proprietors or partnerships, S corporations, and sole proprietors
  • Thu, Apr 15
    Pay the $800 LLC annual tax for 2027CA Franchise Tax Board · Every California LLC
  • Fri, Apr 30
    File sales and use tax return, Q1 2027CA Dept. of Tax and Fee Administration · Businesses with a seller's permit that file quarterly
  • Fri, Apr 30
    Quarterly payroll filings, Q1 2027IRS + CA EDD · Employers

June 2027

  • Tue, Jun 15
    Corporation estimated tax payment (Form 100-ES)CA Franchise Tax Board · Corporations
  • Tue, Jun 15
    Owner's estimated tax, 2nd quarter 2027IRS + CA Franchise Tax Board · Owners of LLCs taxed as sole proprietors or partnerships, S corporations, and sole proprietors
  • Tue, Jun 15
    Pay estimated LLC fee (Form 3536)CA Franchise Tax Board · LLCs with $250,000 or more in California gross receipts

July 2027

  • Thu, Jul 1
    LA City minimum wage increase takes effectLA Office of Wage Standards · Employers in the City of Los Angeles

August 2027

  • Mon, Aug 2
    File sales and use tax return, Q2 2027CA Dept. of Tax and Fee Administration · Businesses with a seller's permit that file quarterly
  • Mon, Aug 2
    Quarterly payroll filings, Q2 2027IRS + CA EDD · Employers

September 2027

  • Wed, Sep 15
    Corporation estimated tax payment (Form 100-ES)CA Franchise Tax Board · Corporations
  • Wed, Sep 15
    Owner's estimated tax, 3rd quarter 2027 (federal only)IRS · Same owners, federal only (California has no September payment)

November 2027

  • Mon, Nov 1
    File sales and use tax return, Q3 2027CA Dept. of Tax and Fee Administration · Businesses with a seller's permit that file quarterly
  • Mon, Nov 1
    Quarterly payroll filings, Q3 2027IRS + CA EDD · Employers

December 2027

  • Wed, Dec 15
    Corporation estimated tax payment (Form 100-ES)CA Franchise Tax Board · Corporations

Not listed: dates that depend on your own business, like the Statement of Information (by your formation month), license and permit renewals, and insurance. Dulybook adds those to your calendar from your business details.

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Dulybook builds your calendar of tax, filing, license, and renewal deadlines from a few questions about your business, reminds you before each one, and walks you through doing it yourself.

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More free guides

  • How to form an LLC in California yourself
  • How to form a corporation in California yourself
  • How to start a sole proprietorship in California
  • How to close (cancel) an LLC in California
  • How to dissolve a corporation in California
  • How to file a California Statement of Information

Dulybook is a tracking and guidance tool, not tax or legal advice. Rules, fees, and websites change, so always confirm on the official agency page before you file or pay. Dulybook doesn't file anything for you. Terms of Service