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Taxpayer Services
Phone: (410)260-7980 from Central Maryland or toll-free 1-800-638-2937 from elsewhere in Maryland
Fax: (410)260-7313
E-mail: taxhelp@marylandtaxes.gov
Licensing and Registration Information:
Phone: (410)260-7215 from Central Maryland or toll-free 1-800-638-2937 from elsewhere in Maryland
E-mail: IFTALICENSING@marylandtaxes.gov 
IFTA E-file Information
Phone: (410)260-7980 from Central Maryland or toll-free 1-800-638-2937 from elsewhere in Maryland
E-mail: IFTA_Carriers@marylandtaxes.gov
IFTA Reporting Information:
Phone: (410)260-7980 from Central Maryland or toll-free 1-800-638-2937 from elsewhere in Maryland
E-mail: IFTA_Carriers@marylandtaxes.gov
Fax: (410)260-7313
Mailing Address:
For Returns: 
Comptroller of Maryland 
Revenue Administration Division 
IFTA Return Processing 
P.O. Box 2171 
Annapolis, MD 21404 
For Licensing and Decals:
Comptroller of Maryland 
Field Enforcement Bureau
Licensing & Registration Section
P.O. Box 2397
Annapolis, MD 21404 
For other Maryland contacts, please see https://www.marylandtaxes.gov/contact-us.php