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California Tax Deadline Calendar

Federal, FTB, CDTFA and EDD deadlines for individuals and closely-held businesses — sorted from today's date, refreshed automatically every day you visit.

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Individuals & Owners

Q4 Estimated Tax (prior year)

Federal Form 1040-ES and California Form 540-ES fourth-quarter estimated payments for the prior tax year.

Businesses

W-2 / 1099-NEC · Q4 Payroll · Q4 Sales Tax

W-2s and 1099-NECs to recipients and IRS/SSA; Form 941 Q4; EDD DE 9/DE 9C Q4; CDTFA Q4 sales & use tax return.

Businesses

S Corporation & Partnership Returns

Federal 1120-S and 1065 (or extensions); California 100S and 565/568 for calendar-year entities; remaining CA PTET balance for electing entities is due with the return.

Individuals & Owners

Individual Returns · Q1 Estimates · C Corp · LLC Tax · IRA/HSA

Form 1040 + CA 540 (or extension — pay with it); Q1 estimates (CA = 30%); calendar-year Form 1120 + CA 100; CA LLC $800 annual tax; prior-year IRA/HSA contribution deadline; FBAR due (auto-extends to Oct 15).

Businesses

Q1 Payroll & Sales Tax

Form 941 Q1; EDD DE 9/DE 9C Q1; CDTFA Q1 sales & use tax return.

Individuals & Owners

Q2 Estimates · CA PTET Prepayment

Federal Q2 estimate; California Q2 estimate (40%); California pass-through entity elective tax (PTET) prepayment for electing entities.

Businesses

Q2 Payroll & Sales Tax · Form 5500

Form 941 Q2; EDD DE 9/DE 9C Q2; CDTFA Q2 return; Form 5500 for calendar-year retirement plans (or extension).

Individuals & Owners

Q3 Federal Estimate · Extended S Corp/Partnership

Federal Q3 estimate (note: California's Q3 installment is 0% — no CA payment due); extended 1120-S and 1065 final deadline.

Individuals & Owners

Extended Individual & C Corp Returns · FBAR Final

Extended Form 1040 + CA 540 final deadline; extended calendar-year Form 1120; FBAR final (automatically extended) deadline.

Businesses

Q3 Payroll & Sales Tax

Form 941 Q3; EDD DE 9/DE 9C Q3; CDTFA Q3 sales & use tax return.

Businesses

C Corporation Q4 Estimated Tax

Fourth-quarter estimated tax for calendar-year C corporations (federal and California).

Individuals & Owners

Year-End Action Deadline

Roth conversions, charitable gifts, annual exclusion gifts, new employer retirement plan adoption, and S corp reasonable compensation must all be completed by year-end.

Dates falling on a weekend or federal/state holiday generally shift to the next business day — the countdown here already shifts weekend dates. Disaster-relief postponements announced by the IRS or FTB override this calendar.

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Download the one-page calendar (PDF) for your office wall or client folder.

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