Bank customer: unauthorized signature or alteration not discovered and reported within 1 year after statement made available is barred
12 months after date the statement or items were made available to the customer, under Cal. Com. Code 4406(f) (amended by Stats. 2016, ch. 277 (AB 2907), eff. Jan. 1, 2017).
Rule text
Without regard to care or lack of care of either the customer or the bank, a customer who does not within one year after the statement or items are made available to the customer (subdivision (a)) discover and report the customer's unauthorized signature on or any alteration on the item is precluded from asserting against the bank the unauthorized signature or alteration.
Calculate this deadline
- Trigger (Date the statement or items were made available to the customer): Friday, November 6, 2026.
- Add 12 months: Saturday, November 6, 2027.
- That day is a Saturday, but this date is fixed by the rule and does not move: Saturday, November 6, 2027.
Cal. Com. Code 4406(f) (amended by Stats. 2016, ch. 277 (AB 2907), eff. Jan. 1, 2017)
Without regard to care or lack of care of either the customer or the bank, a customer who does not within one year after the statement or items are made available to the customer (subdivision (a)) discover and report the customer's unauthorized signature on or any alteration on the item is precluded from asserting against the bank the unauthorized signature or alteration.Official source
Cal. Code Civ. Proc. 12, 12a, 12b; Cal. Gov. Code 6800, 6707 (state agency filings); Fed. R. Civ. P. 6(a) (federal statutes and federal court filings)
CCP 12: "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." 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." 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." FRCP 6(a): "The following rules apply in computing any time period specified in these rules, in any local rule or court order, or in any statute that does not specify a method of computing time. (1) ... (A) exclude the day of the event that triggers the period; (B) count every day, including intermediate Saturdays, Sundays, and legal holidays; and (C) include the last day of the period, but if the last day is a Saturday, Sunday, or legal holiday, the period continues to run until the end of the next day that is not a Saturday, Sunday, or legal holiday."Official source
- Absolute preclusion regardless of bank care. Compare CCP 340(c) (already in ca-sol).
- 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 the statement or items were made available to the customer on Monday, March 15, 2027, personal service: due Wednesday, March 15, 2028.
- Trigger (Date the statement or items were made available to the customer): Monday, March 15, 2027.
- Add 12 months: Wednesday, March 15, 2028.
Notes
Absolute preclusion regardless of bank care. Compare CCP 340(c) (already in ca-sol).
Related deadlines
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.