Md. Code, Tax - Property § 14–919

(a) Notwithstanding any other provision of this title, a municipal corporation may pay a claim for a refund of personal property tax without interest within three years after the refund claim is approved if the Department determines that the refund is a result of a failure to file a report when due or other taxpayer error.

(b) Notwithstanding any other provision of this title, a county may pay a claim for a refund of personal property tax without interest within 180 days after the refund claim is approved if the Department determines that the refund is a result of a failure to file a report when due or other taxpayer error.