If you overpaid the tax on any production activity purchases, you may apply for a refund within four years from the date of payment of the tax by completing Form ST205.
Mail the completed Form ST205 to:
Comptroller of Maryland
301 West Preston Street
Baltimore, MD 21201-2383
For assistance or information on filing refund claims, call 410-767-1530 or 410 767-1538 within the Baltimore area or 1-800-492-1752 from elsewhere in Maryland, Monday - Friday, 8:30 a.m. - 4:30 EDT.