Section 166 Of Chapter 2. Administrative Provisions From California Revenue And Taxation Code >> Division 1. >> Part 1. >> Chapter 2.
166
. (a) Whenever a taxpayer is required to file any statement,
affidavit, application, or any other paper or document with a taxing
agency by a specified time on a specified date, such filing shall be
deemed to be within the specified period if it is sent by United
States mail, properly addressed with postage prepaid, and bears a
post office cancellation mark of the specified date, or earlier
within the specified period, stamped on the envelope, or on itself,
or if proof satisfactory to the agency establishes that the mailing
occurred on the specified date, or earlier within the specified
period.
(b) The provisions of this section shall supersede any contrary
special provision of this division unless such special provision
specifically provides that this section shall not be applicable.
(c) The provisions of this section are applicable to any filing
required to be made by ordinance, rule, or regulation of a taxing
agency.
(d) Any statement or affidavit made by a taxpayer asserting such a
timely filing must be made within one year of the deadline
applicable to the original filing; provided, however, that this
subsection shall not apply to any statement or affidavit asserting
the timely filing of a property statement or to any statement made by
the taxpayer in connection with an escape assessment imposed
pursuant to Section 531.
(e) It is the intent of the Legislature that this section be
liberally construed in favor of the taxpayer and be applicable to all
filings relating to property taxation which are required to be made
by a taxpayer by a specified time on a specified date.