Maryland Statutes
Subtitle 3 - Determination of Tax and Enforcement
Section 13-303 - Notice and Demand for Return

If a person or governmental unit fails to file a tax return as required under this article, the tax collector shall mail the person or governmental unit a notice and demand for the return that requires the person or governmental unit:
        (1)    for the sales and use tax, to file the return and to pay the tax within 10 days after the date on which the notice is mailed; and
        (2)    for any other tax, to file the return and to pay the tax within 30 days after the date on which the notice is mailed.