William R. Bloomer, Certified Public Accountant

Tax deadlines

Business Tax Deadlines for Nevada and California

The federal, Nevada and California filing and payment dates most businesses face, month by month, for a business whose tax year follows the calendar.

Last reviewed October 2026.

January

  • Jan 31

    W-2s to employees and to the Social Security Administration

    FederalEmployers

  • Jan 31

    1099-NEC to contractors and to the IRS; 1099-MISC to recipients

    FederalBusinesses paying contractors

  • Jan 31

    Form 941 (fourth quarter), Form 940 (annual federal unemployment), and Form 945 if needed

    FederalEmployers

  • Jan 31

    Modified Business Tax and unemployment report (fourth quarter)

    NevadaNevada employers

  • Jan 31

    DE 9 and DE 9C (fourth quarter)

    CaliforniaCalifornia employers

February

  • Feb 28

    1099-MISC to the IRS on paper (electronic filing is due March 31)

    FederalBusinesses

March

  • Mar 15

    Form 1065 and Form 1120-S, or an extension (Form 7004)

    FederalPartnerships and S corporations

  • Mar 15

    Form 565, Form 568 and Form 100S

    CaliforniaCalifornia partnerships, LLCs and S corporations

  • Mar 31

    1099-MISC to the IRS, filed electronically

    FederalBusinesses

April

  • Apr 15

    Form 1120, or an extension (Form 7004)

    FederalC corporations

  • Apr 15

    Corporate estimated tax, first installment

    FederalC corporations

  • Apr 15

    Form 100

    CaliforniaCalifornia C corporations

  • Apr 15

    Corporate estimated tax, first installment (30%), or the full minimum franchise tax

    CaliforniaCalifornia corporations

  • Apr 15

    LLC annual tax (Form 3522)

    CaliforniaCalifornia LLCs

  • Apr 30

    Form 941 (first quarter)

    FederalEmployers

  • Apr 30

    Modified Business Tax and unemployment report (first quarter)

    NevadaNevada employers

  • Apr 30

    DE 9 and DE 9C (first quarter)

    CaliforniaCalifornia employers

June

  • Jun 15

    Corporate estimated tax, second installment

    FederalC corporations

  • Jun 15

    Corporate estimated tax, second installment (40%)

    CaliforniaCalifornia corporations

  • Jun 15

    LLC estimated fee (Form 3536)

    CaliforniaCalifornia LLCs over the fee threshold

July

  • Jul 31

    Form 941 (second quarter)

    FederalEmployers

  • Jul 31

    Modified Business Tax and unemployment report (second quarter)

    NevadaNevada employers

  • Jul 31

    DE 9 and DE 9C (second quarter)

    CaliforniaCalifornia employers

August

  • Aug 14

    Commerce Tax return, for the July 1 to June 30 year

    NevadaBusinesses with more than $4 million in Nevada gross revenue

September

  • Sep 15

    Extended Form 1065 and Form 1120-S

    FederalPartnerships and S corporations on extension

  • Sep 15

    Corporate estimated tax, third installment

    FederalC corporations

  • Sep 15

    Extended Form 100S, Form 565 and Form 568

    CaliforniaCalifornia filers on extension

  • Sep 15

    Corporate estimated tax, third installment (0%, no payment due)

    CaliforniaCalifornia corporations

October

  • Oct 15

    Extended Form 1120

    FederalC corporations on extension

  • Oct 31

    Form 941 (third quarter)

    FederalEmployers

  • Oct 31

    Modified Business Tax and unemployment report (third quarter)

    NevadaNevada employers

  • Oct 31

    DE 9 and DE 9C (third quarter)

    CaliforniaCalifornia employers

November

  • Nov 15

    Extended Form 100 (seven-month extension)

    CaliforniaCalifornia C corporations

December

  • Dec 15

    Corporate estimated tax, fourth installment

    FederalC corporations

  • Dec 15

    Corporate estimated tax, fourth installment (30%)

    CaliforniaCalifornia corporations

No Fixed Date

  • Payroll tax deposits

    FederalMonthly depositors by the 15th of the following month; semiweekly depositors within days of each payday. California deposits follow the same schedule for most employers.

  • Annual list and state business license renewal (Secretary of State)

    NevadaEvery Nevada entity, by the last day of the month it was formed, each year.

  • Sales and use tax

    NevadaBusinesses selling taxable goods, monthly or quarterly by the last day of the following month, depending on the assigned schedule.

  • Statement of Information (Secretary of State)

    CaliforniaCorporations every year and LLCs every two years, by the end of the anniversary month of registration.

  • DE 542, report of independent contractors

    CaliforniaWithin 20 days of paying a contractor $600 or more in a year, or signing a contract for that much.

This calendar is general information, not advice for your business. Which dates apply depends on how your business is set up and where it operates.

For tax changes as they happen, see Tax Updates.

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