Mainstay Filing

Best for: Owners who want a single flat annual fee covering all compliance tasks without upsells or renewal price increases.

Pros:
+ Single flat fee of $199/year covers formation, registered agent, and annual report filing in all 50 states
+ Annual report filing is automatically handled for the customer every year
+ Price is locked with no renewal hikes, ensuring predictable budgeting

Cons:
- Higher upfront annual cost compared to Bizee's $0 Basic package
- The state's own filing fee is charged on top of the $199

Ranked #1 of 5, score 9.4/10 in "Best LLC Formation Services for Startups in 2026" by Top Ratings Hub, updated 2026-10-11.

Round-up topic: best llc formation services.

Editorial pick from a published round-up — not an advertisement placed by a private seller, and nobody on Bazeta is selling it.

Source: Top Ratings Hub — https://topratingshub.com/best/best-llc-formation-services-for-startups-in-2026