Maryland Code, Tax-General § 2-111

(1) filing a Maryland income tax return or declaration of estimated income tax under § 10-820 of this article;

(2) filing a refund claim under § 13-1104 of this article; and

(3) filing an appeal to the Maryland Tax Court under § 13-510 of this article, an appeal to the circuit court under § 13-532 of this article, or any further appeal permitted under Maryland law.