CA Rev & Tax Code § 6479.3 (2021)
2021 California Code|Revenue and Taxation Code - RTC|DIVISION 2 - OTHER TAXES|PART 1 - SALES AND USE TAXES|CHAPTER 5 - Determinations|ARTICLE 1.2 - Payment by Electronic Funds Transfer|Section 6479.3.

6479.3.  (a) Except as provided in subdivision (k), any person whose estimated tax liability under this part averages ten thousand dollars ($10,000) or more per month, as determined by the department pursuant to methods of calculation prescribed by the department, shall remit amounts due by an electronic funds transfer under procedures prescribed by the department. Any person who collects use tax on a voluntary basis is not required to remit amounts due by electronic funds transfer.(b) Any person whose estimated tax liability under this part averages less than ten thousand dollars ($10,000) per month or any person who voluntarily collects use tax may elect to remit amounts due by electronic funds transfer with the approval of the department.(c) Any person remitting amounts due pursuant to subdivision (a) or (b) shall perform electronic funds transfer in compliance with the due dates set forth in Article 1 (commencing with Section 6451) and Article 1.1 (commencing with Section 6470). Payment is deemed complete on the date the electronic funds transfer is initiated, if settlement to the state’s demand account occurs on or before the banking day following the date the transfer is initiated. If settlement to the state’s demand account does not occur on or before the banking day following the date the transfer is initiated, payment is deemed to occur on the date settlement occurs.(d) Any person remitting taxes by electronic funds transfer shall, on or before the due date of the remittance, file a return for the preceding reporting period in the form and manner prescribed by the department. Any person who fails to timely file the required return shall pay a penalty of 10 percent of the amount of taxes, exclusive of prepayments, with respect to the period for which the return is required.(e) (1) Except as provided in paragraph (2), any person required to remit taxes pursuant to this article who remits those taxes by means other than appropriate electronic funds transfer shall pay a penalty of 10 percent of the taxes incorrectly remitted.(2) A person required to remit prepayments pursuant to this article who remits a prepayment by means other than an appropriate electronic funds transfer shall pay a penalty of 6 percent of the prepayment amount incorrectly remitted.(f) Except as provided in Sections 6476 and 6477, any person who fails to pay any tax to the state or any amount of tax required to be collected and paid to the state, except amounts of determinations made by the department under Article 2 (commencing with Section 6481) or Article 3 (commencing with Section 6511), within the time required shall pay a penalty of 10 percent of the tax or amount of tax, in addition to the tax or amount of tax, plus interest at the modified adjusted rate per month, or fraction thereof, established pursuant to Section 6591.5, from the date on which the tax or the amount of tax required to be collected became due and payable to the state until the date of payment.(g) In determining whether a person’s estimated tax liability averages ten thousand dollars ($10,000) or more per month, the department may consider tax returns filed pursuant to this part and any other information in the department’s possession.(h) Except as provided in subdivision (i), the penalties imposed by subdivisions (d), (e), and (f) shall be limited to a maximum of 10 percent of the taxes due, exclusive of prepayments, for any one return. Any person remitting taxes by electronic funds transfer shall be subject to the penalties under this section and not Section 6591.(i) The penalties imposed with respect to paragraph (2) of subdivision (e) and Sections 6476 and 6477 shall be limited to a maximum of 6 percent of the prepayment amount.(j) The department shall promulgate regulations pursuant to Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code for purposes of implementing this section.(k)  Until January 1, 2022, a person licensed to engage in commercial cannabis activity under Division 10 (commencing with Section 26000) of the Business and Professions Code, may remit amounts due by a means other than electronic funds transfer, if the department deems it necessary to facilitate collection of amounts due.(Amended by Stats. 2018, Ch. 228, Sec. 1. (AB 1741) Effective August 28, 2018.)