Sources and Method
Mainstay Filing is our pick. State figures come from official sources; no mailing company is named anywhere on this site.
State report fees
Fees, frequency and filing offices come from each Secretary of State’s fee schedule and statutes, read in October 2026, and cross-checked against a second official-source table. Due dates are from our August 2026 state research. Each state page lists its sources.Letters
The description of solicitation letters is a pattern drawn from what owners report, written without naming any sender. It is guidance on how to check a sender, not a finding about any company.Agent prices
Provider registered agent pages read October 20, 2026; providers are cited by name, not linked.Mainstay Filing
Mainstay Filing pricing, FAQ and services pages, read October 25, 2026.