Code of Maryland Regulations Title 03 — Comptroller
COMAR 03.12.01.04 — § 4
.04 Computation of Digital Advertising Gross Revenues Tax in Year of a Rate Change.
Unless an act that changes the digital advertising gross revenues tax rate provides otherwise, if the rate changes on a date other than January 1, a person shall compute the digital advertising gross revenues tax using the tax rate that applies to each part of the year.
Source: official text