How to search Mississippi business entities online
Updated August 2026
Quick Answer
Mississippi's business search is at corp.sos.ms.gov, run by the Secretary of State. Search by business name, Business ID, officer name, or registered agent name — more modes than most states offer — then review the result for status and filing details. Searching is open to the public; filing anything requires a registered filer account with the Secretary of State.
- Go to corp.sos.ms.gov (not the older business.sos.ms.gov, which now only hosts UCC search).
- Search by business name, Business ID, officer, or registered agent name.
- Review the result for the entity's status and filing details.
Verify carefully, and watch for the old URL
The Secretary of State has reported fraudulent business filings and lawsuits filed against the wrong entities, so double-check details before relying on a search result. Also note: the old business.sos.ms.gov address still loads, but it now serves the UCC lien search rather than business entity search — use corp.sos.ms.gov (or the Business Search link from sos.ms.gov) to look up a company.
What the search covers
The database includes domestic and foreign business corporations, nonprofit corporations, LLCs, limited partnerships, LLPs, general partnerships, business trusts, and fictitious/trade names registered with the Secretary of State.
Search options
Mississippi's portal offers more search modes than most state registries:
- Business Name — five sub-modes: Starting With, All Words, Any Words, Sounds Like, Exact Match
- Business ID — the SOS-assigned entity identifier; single-record lookup
- Officer Name — searches individuals listed as officers or directors
- Registered Agent Name
Annual reports
Corporations and LLCs must file an Annual Report by April 15 each year; nonprofit corporations file by May 15. The filing fee is $25 for corporations, $0 for domestic LLCs, and $250 for foreign LLCs. Certificates of Good Standing and certified copies can be ordered through the portal after login.
All payments are nonrefundable. If a corporation, or an LLC required to do so, has been administratively dissolved and needs reinstatement, the process requires a tax clearance letter from the Mississippi Department of Revenue, obtained and attached electronically, before the Secretary of State will process the filing.
Filing is online-first
New filings, amendments, dissolutions, and annual reports are initiated through the online portal, and old standalone paper forms are no longer accepted. Filers who prefer not to pay online can still fill out a filing in the portal, print it, and mail it in with a check — though paper submissions take significantly longer to process than online ones, which are often reviewed and returned within 24 hours.
Frequently Asked Questions
Why doesn't business.sos.ms.gov show Mississippi business search results anymore?
That address still loads, but it now hosts only the UCC lien search and subscription services. Mississippi's business entity search moved to corp.sos.ms.gov — use that address, or the Business Search link from sos.ms.gov, to look up a company.
Can I search Mississippi businesses by registered agent name?
Yes. Mississippi's portal offers more search modes than most states, including separate Registered Agent Name and Officer Name searches, plus five sub-modes under Business Name: Starting With, All Words, Any Words, Sounds Like, and Exact Match.
When are Mississippi annual reports due?
Corporations and LLCs must file by April 15 each year, while nonprofit corporations have until May 15. The filing fee is $25 for corporations, $0 for domestic LLCs, and $250 for foreign LLCs, and all payments are nonrefundable.