Washington Revised Code Title 82. Excise Taxes § 82.32.085. Electronic funds transfer--Generally

(1) “Electronic funds transfer” means any transfer of funds, other than a transaction originated or accomplished by conventional check, drafts, or similar paper instrument, which is initiated through an electronic terminal, telephonic instrument, or computer or magnetic tape so as to order, instruct, or authorize a financial institution to debit or credit a checking or other deposit account. “Electronic funds transfer” includes payments made by electronic check (e-check).

(3) The department must adopt rules necessary to implement the provisions of RCW 82.32.080 and this section. The rules must include but are not limited to: (a) Coordinating the filing of tax returns with payment by electronic funds transfer or other form of electronic payment as authorized by the department; (b) form and content of electronic funds transfer; (c) voluntary use of electronic funds transfer with permission of the department for those taxpayers that are not subject to the mandatory electronic payment requirement in RCW 82.32.080; (d) use of commonly accepted means of electronic funds transfer; (e) means of crediting and recording proof of payment; and (f) means of correcting errors in transmission.