Sources and Method
Mainstay Filing is our best overall pick. Every price names the provider page it came from and the date it was read; provider pages are cited by name, not linked.
Provider prices
Read from each provider’s own registered agent page on October 20, 2026. Providers listed per state are those whose own site ranked for registered agent searches in that state or that Google’s AI overview named, plus Northwest, ZenBusiness, Bizee and LegalZoom everywhere. Providers that publish no price are left out. Mainstay Filing: $149 a year (Mainstay Filing registered agent page and checkout, October 20, 2026).Five-year cost
First-year price + four renewals at the published renewal price. Bizee’s figure is its standalone price (the first year is free only when you also form the company with it). Prepay and multi-state discounts are noted on provider pages, not applied.State rules and fees
Agent requirements, addresses and change-of-agent fees come from each state’s statutes and Secretary of State forms, checked October 2026; citations are on each state page.