Except as provided in § 10–105(d) of this title and except as otherwise provided in this subtitle, a person shall compute the State income tax by applying the tax rates in § 10–105 of this title to Maryland taxable income.

An individual shall compute the tax for a taxable year from the tax tables if the individual has Maryland taxable income equal to or less than the maximum amount provided for in the tax tables.

Unless an act that changes the State income tax rate provides otherwise, if the rate changes on a date other than the 1st day of the taxable year of a person, the person shall compute State income tax using the tax rate that applies to each part of the year.

Except as otherwise provided in this subtitle, an individual shall compute the county income tax by applying the county tax rate in § 10-106 of this title to Maryland taxable income.