Md. Code Ann., Tax-Gen. § 10-809 — § 10-809

If an individual is not required to file an income tax return under § 10-805, § 10-806 or § 10-813 of this subtitle, the individual:
(1) is not liable for income tax; and
(2) may file an income tax return to claim a refund of the income tax withheld or estimated income tax paid or a refund under § 10-704, § 10-707, or § 10-714 of this title.