Maryland Statutes
Subtitle 1 - Definitions; General Provisions
Section 11-103 - Presumption of Taxability

(a)    A rebuttable presumption exists that any sale in the State is subject to the sales and use tax imposed under § 11–102(a)(1) of this subtitle.
    (b)    The person required to pay the sales and use tax has the burden of proving that a sale in the State is not subject to the sales and use tax.
    (c)    The retail sale of a digital code or digital product shall be presumed to be made in the state in which the customer tax address is located.