Maryland Statutes
Subtitle 4 - Manufacturer's Licenses
Section 11-403 - Beer Sale on Credit to Retail Dealer Prohibited

In addition to § 2–215 of this article:
        (1)    a cash deposit for a returnable container shall be required at the time of sale or delivery; and
        (2)    a check accepted for payment that is not postdated and is promptly deposited for collection is considered cash.