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Maryland Taxes
Individual Taxpayers
Business Taxpayers
Tax Professionals
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Online Verification of Maryland Tax Account Numbers
Direct Pay Permits:
Unnumbered accounts
- Exelon Corporation (including following subsidiaries)
Baltimore Gas & Electric Company ("BGE")
- Constellation Energy Generation, LLC (including the following subsidiaries)
Constellation Power Source Generation, Inc.
Calvert Cliffs Nuclear Power Plant, LLC
- Potomac Edison Company
- Potomac Electric Power Company
- Washington Gas Light Company
Numbered accounts
1) Northrop Grumman Systems Corporation
2) Transcontinental Gas Pipe Line Corporation
3) SAIC - Frederick
8) Mack Trucks, Inc.
14) RG Steel Sparrows Point, LLC
17) Delmarva Power & Light Company
18) Norfolk Southern Railway
19) CSX Transportation Inc.
20) General Motors LLC. (including following subsidiaries)
Truck Group-Baltimore
Allison Transmission Division
21) Cristal USA, Inc.
23) W.L. Gore and Associates, Inc.
24) Human Genome Sciences, Inc.
25) MedImmune, LLC.(including following affiliate)
MedImmune Biologics, Inc.
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