California Sales Tax Due Dates — 2026
Exact California sales tax filing deadlines for 2026 and 2027 — every period, already adjusted for weekends and holidays. Find your filing frequency, see the dates, and add them to your calendar.
California Monthly Sales Tax Due Dates — 2026
| Filing period | Due date |
|---|---|
| December 2025 | Mon, February 2, 2026moved off weekend/holiday |
| January 2026 | Mon, March 2, 2026moved off weekend/holiday |
| February 2026 | Tue, March 31, 2026 |
| March 2026 | Thu, April 30, 2026 |
| April 2026 | Mon, June 1, 2026moved off weekend/holiday |
| May 2026 | Tue, June 30, 2026 |
| June 2026 | Fri, July 31, 2026 |
| July 2026 | Mon, August 31, 2026 |
| August 2026 | Wed, September 30, 2026 |
| September 2026 | Mon, November 2, 2026moved off weekend/holiday |
| October 2026 | Mon, November 30, 2026 |
| November 2026 | Thu, December 31, 2026 |
Dates are adjusted for weekends and U.S. federal holidays. Some states observe additional state holidays — always confirm the exact date with the California Department of Tax and Fee Administration (CDTFA).
How California assigns your filing frequency
Your frequency is based on how much sales tax you collect. California Department of Tax and Fee Administration (CDTFA) notifies you of your assigned schedule.
Monthly
Assigned to larger sellers; return due the last day of the following month.
Quarterly
Default for most accounts; due the last day of the month after each quarter (Apr 30, Jul 31, Oct 31, Jan 31).
Annual
Small sellers; the yearly return is due January 31.
California sales tax filing rules
Good to know
California uses month-end due dates (not the 20th). Quarterly-prepay accounts also pay on the 24th.
Prepayments
Accounts with an average monthly tax liability of $17,000 or more are placed on quarterly-prepay: two prepayments are due the 24th of the first two months of each quarter, then the quarterly return at month-end.
Filing California sales tax late
California charges a late-filing and late-payment penalty plus interest on any unpaid tax, and most states apply a minimum penalty even on a zero return. File on time — even a return with no tax due must be filed. Confirm current penalty amounts with the California Department of Tax and Fee Administration (CDTFA).
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Frequently Asked Questions
Official sources
Last verified 2026-05-30 against the state revenue agency. This page is for general information, not tax advice — confirm your specific due dates with the California Department of Tax and Fee Administration (CDTFA).
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