Maryland Statutes
Subtitle 5 - Wholesaler's Licenses
Section 11-504 - Beer Sale on Credit to Retail Dealer Prohibited

For purposes of applying § 2–314 of this article:
        (1)    a cash deposit for a returnable container shall be required at the time of sale or delivery of beer; and
        (2)    a check accepted for payment that is not postdated and is promptly deposited for collection is considered cash.