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Maryland . Contact directory

How to reach the Maryland Secretary of State.

Direct phone number, hours, mailing and physical addresses, and the right phone for the right question. Plus the related Maryland departments most business owners need.

Primary phone
410-767-1184
Mon-Fri 8:30am-4:30pm ET
Mailing address
301 W. Preston Street, Room 801, Baltimore, MD 21201
Physical address
301 W. Preston Street, Room 801, Baltimore, MD 21201
Fax
410-333-7097

The right phone for the right question

Franchise tax and corporate income tax
410-260-7980 (MD Comptroller, Business Tax)
Expedited filings
Standard 7-8 weeks paper; 7-day online with +$50; same-day in-person: +$425
410-767-1184 (same-day and next-day expedite available)

Most calls to the Maryland SoS are about things File.Business can answer instantly

"What is my entity's status?"
Run a search →
"When is my AR due?"
See AR rules →
"How do I change RA?"
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"Can I reinstate?"
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FAQ

Frequently asked questions

What is the phone number for the Maryland Secretary of State?
The primary phone for the Maryland State Department of Assessments + Taxation (SDAT) is 410-767-1184. Office hours are Mon-Fri 8:30am-4:30pm ET.
What are the Maryland Secretary of State office hours?
Office hours are Mon-Fri 8:30am-4:30pm ET. Online filings can be submitted 24/7.
What is the Maryland Secretary of State mailing address?
Mailing address: 301 W. Preston Street, Room 801, Baltimore, MD 21201. Physical office: 301 W. Preston Street, Room 801, Baltimore, MD 21201.
How do I speak to a person at the Maryland Secretary of State?
Call 410-767-1184 during business hours.
Does the Maryland Secretary of State offer expedited service?
Standard 7-8 weeks paper; 7-day online with +$50; same-day in-person: +$425.
Can I email the Maryland Secretary of State?
Email contact varies by department.
Can I visit the Maryland Secretary of State office in person?
Yes, the physical office is at 301 W. Preston Street, Room 801, Baltimore, MD 21201.

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Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the Maryland State Department of Assessments + Taxation (SDAT) or any Secretary of State office. You may file directly with the Maryland State Department of Assessments + Taxation (SDAT). Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the Maryland State Department of Assessments + Taxation (SDAT) as of June 2026 and may change. For entity-specific guidance, consult a licensed Maryland attorney or CPA.

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File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.