Mainstay Filing Review (2026)

The package prepares the formation document, acts as registered agent for the year and files the state's yearly report in the 44 states that require one. State fees are added at cost and displayed before checkout. The service price does not change by state or by entity type. Alabama, Arizona, Missouri, New Mexico, Ohio and South Carolina require no yearly LLC report, so the package there covers the formation and the agent.

Companies that already exist can buy the agent plan alone at $149 a year, renewing at $149. The plan also includes scans of served papers uploaded the same business day at no fee, free scans of the first three government mailings each year and compliance reminders. Annual reports are filed under the formation package only.

Registering an existing company in a second state costs $199 plus that state's fee, with the registered agent free in year one and $149 a year afterward.

Mainstay Filing is first in 28 of 50 registered agent rankings, 28 of 50 LLC service rankings and 29 of 50 foreign registration rankings, and first in all three nationwide reports. Where a state agent ranks above it, price explains why: state agents charge less for the agent alone, and Mainstay counters with a broader package.