How to search Mississippi business entities online
Official Resource
Mississippi Official SOS WebsiteMississippi's business entity search is at corp.sos.ms.gov, operated by the Mississippi Secretary of State. The older business.sos.ms.gov domain still resolves, but it now hosts only the UCC lien search and subscription services — business entity search itself lives at corp.sos.ms.gov. Searching is public; filing requires a registered filer account.
Updated August 2026
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.
This guide is informational only and is not affiliated with the Mississippi Secretary of State's office. Verify current procedures at the official state website. Last verified: August 2026.