Property tax refund after assessment appeal (application not designated as refund claim): within 6 months after AAB final determination with notice advising a refund claim
6 months after date of the aab final determination (notice advising a refund claim within 6 months mailed), under Cal. Rev. & Tax. Code 5097(a)(3)(B).
Rule text
Filed within six months, if an application for a reduction in an assessment or an application for equalization of an assessment has been filed pursuant to Section 1603 and the applicant does not state in the application that the application is intended to constitute a claim for a refund, after the county assessment appeals board makes a final determination on the application for reduction in assessment or on the application for equalization of an escape assessment, and mails a written notice of its determination to the applicant and the notice advises the applicant to file a claim for refund within six months of the date of the county assessment appeals board's final determination.
Calculate this deadline
- Trigger (Date of the AAB final determination (notice advising a refund claim within 6 months mailed)): Friday, November 6, 2026.
- Add 6 months: Thursday, May 6, 2027.
Cal. Rev. & Tax. Code 5097(a)(3)(B)
Filed within six months, if an application for a reduction in an assessment or an application for equalization of an assessment has been filed pursuant to Section 1603 and the applicant does not state in the application that the application is intended to constitute a claim for a refund, after the county assessment appeals board makes a final determination on the application for reduction in assessment or on the application for equalization of an escape assessment, and mails a written notice of its determination to the applicant and the notice advises the applicant to file a claim for refund within six months of the date of the county assessment appeals board's final determination.Official source
Gov. Code 6800; Gov. Code 6707 (filings with a state agency); CCP 12, 12a, 13; agency rules 8 CCR 10600 (WCAB), 8 CCR 32130 (PERB), 22 CCR 5000 'Holiday' definition (CUIAB)
Gov. Code 6800: "The time in which any act provided by law is to be done is computed by excluding the first day, and including the last, unless the last day is a holiday, and then it is also excluded." Gov. Code 6707: "When the last day for filing any instrument or other document with a state agency falls upon a Saturday or holiday, such act may be performed upon the next business day with the same effect as if it had been performed upon the day appointed." 8 CCR 10600: "(a) The time in which any act provided by these rules is to be performed is computed by excluding the first day and including the last. (b) Unless otherwise provided by law, if the last day for exercising or performing any right or duty to act or respond falls on a weekend, or on a holiday for which the offices of the Workers' Compensation Appeals Board are closed, the act or response may be performed or exercised upon the next business day." 8 CCR 32130(a)-(b) (PERB): "(a) In computing any period of time under these regulations, except under Section 32776(c), (d), (e) and (f), the period of time begins to run the day after the act or occurrence referred to. (b) Whenever the last date to file a document falls on Saturday, Sunday, or a holiday, as defined in Government Code Sections 6700 and 6701, or PERB offices are closed, the time period for filing shall be extended to and include the next regular PERB business day. The extension of time provided herein shall be applied subsequent to the application of any other extension of time provided by these regulations or by other applicable law." CCP 12a(a): "If the last day for the performance of any act provided or required by law to be performed within a specified period of time is a holiday, then that period is hereby extended to and including the next day that is not a holiday. For purposes of this section, “holiday” means all day on Saturdays, all holidays specified in Section 135 and, to the extent provided in Section 12b, all days that by terms of Section 12b are required to be considered as holidays."Official source
- Property tax refund claim (Rev. & Tax. 5096-5097); latest of the listed periods controls. AMBIGUITY: the advisory notice says six months from the final determination, while the notice itself is mailed later; calendar from the determination date to be safe.
- If the clerk's office is closed or inaccessible on the last day (weather, emergency or local closure orders), the deadline may be extended. Check local orders.
This calculator applies the cited rules to the dates you enter. It is not legal advice. Court orders, local rules, and case-specific facts can change a deadline; verify before relying on it. Rule set pending attorney review.
Worked example
Date of the AAB final determination (notice advising a refund claim within 6 months mailed) on Monday, March 15, 2027, personal service: due Wednesday, September 15, 2027.
- Trigger (Date of the AAB final determination (notice advising a refund claim within 6 months mailed)): Monday, March 15, 2027.
- Add 6 months: Wednesday, September 15, 2027.
Notes
Property tax refund claim (Rev. & Tax. 5096-5097); latest of the listed periods controls. AMBIGUITY: the advisory notice says six months from the final determination, while the notice itself is mailed later; calendar from the determination date to be safe.
Related deadlines
- Assessment appeal: if board does not hear and decide within 2 years of timely filing, applicant's opinion of value is enrolled (absent written waiver) (24 months after)
- Property tax refund claim: within 4 years after payment (or later alternative under 5097(a)(2)) (48 months after)
- Property tax refund claim: alternative 1 year after mailing of Section 2635 refund notice (12 months after)
- Property tax refund claim: alternative 60 days after Section 4836(a) notice (60 days after)
- Property tax refund after assessment appeal: within 1 year after AAB final determination notice that does not advise filing a refund claim (12 months after)
- FTB refund claim: within 4 years after a timely return was filed (latest of 19306 periods controls) (48 months after)
- FTB refund claim: alternative 4 years from original due date (without extensions) (48 months after)
- FTB refund claim: alternative 1 year from date of overpayment (12 months after)
Rules current as of 2026-10-27. Confirm against the official source and any local rule or court order before relying on a date. Rules changelog.