Maryland Code, State Finance and Procurement § 14-203

(b)(1) The criteria for qualification as a small business may vary among industries to reflect their particular characteristics.

(2) Regulations adopted under this section shall include, for each class of business, the maximum number of employees a business may have to qualify as a small business.

(1) 250 or fewer employees; or

(2) average annual gross receipts of $10,000,000 or less averaged over its most recently completed 3 fiscal years.