Maryland Statutes
Part II - Payment of Tax Withheld
Section 10-909 - Withholding Periods

The income tax required to be withheld under § 10–908 of this subtitle shall be withheld:
        (1)    by a payor other than a fiduciary or S corporation and by an employer:
            (i)    on the basis of each weekly, 2–week, semimonthly, or monthly regular period of payment; or
            (ii)    if there is no regular period of payment as specified in item (i) of this item, on a daily basis; and
        (2)    by a payor who is a fiduciary, on a quarterly basis.