Maryland . 2026 filing guide
Maryland Secretary of State filings, deadlines, and how to do them right.
Annual reports, business search, registered agent changes, reinstatement, dissolution, tax registration. Every Maryland filing explained, plus the business environment, regulatory bodies, and a year-round compliance calendar. Verified against the Maryland State Department of Assessments + Taxation as of June 2026.
Verified against Maryland State Department of Assessments + Taxation on Jun 12, 2026
Agency
Maryland State Department of Assessments + Taxation
Branded as Maryland SDAT
Phone
410-767-1340
Mon-Fri 8:30am-4:30pm ET
Annual due
April 15
1/10% per month penalty
Processing
5-7 business days
Online filings
Maryland business environment
Why founders choose Maryland (and what to know first)
Proximity to federal government and DC market. Strong biotech and federal contracting ecosystem. No local sales tax. Note: Maryland imposes a county-level income tax in addition to state.
Economy
~$500B economy
Registered entities
~600,000 active entities
New formations / year
~90,000 annually
Key industries
Biotech and federal contracting (proximity to DC), healthcare (Johns Hopkins), defense (NSA, Fort Meade), shipping (Port of Baltimore), agriculture