Md. Code Ann., Tax-Prop. § 14-864
On or before 7 years from the date the tax is due, the State, a county, or a municipal corporation may initiate an action in a court of appropriate jurisdiction to collect any tax imposed under this article and within the time provided by law. If a person owes State and county or municipal corporation taxes to the same collector, the action may combine claims of the State, county, and municipal corporation.
Added by Acts 1985, c. 8, § 2, eff. Feb. 1, 1986. Amended by Acts 1986, c. 171.