The Internal Revenue Service will open its doors Saturday in Baltimore and four other Maryland locations to help individuals and small businesses with return preparation or other tax issues, such as working out a payment plan.

The Taxpayer Assistance Centers will be open from 9 a.m. to 2 p.m. The sites are 31 Hopkins Plaza in Baltimore, 190 Admiral Cochran Drive in Annapolis, 1260 Maryland Ave. in Hagerstown, 11510 Georgia Ave. in Wheaton and 8401 Corporate Drive in Landover.