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ProjectionLabcFIREsim
Freemium

Can be tried for free; paid plans are listed on the pricing page.

 Free

Free to use in the browser.

Web Web
  • Detailed year-by-year tax and cash flow projections
  • Historical backtesting of plans
  • Tests withdrawal plans against historical data
  • Runs in the browser with nothing to install
  • Web only
  • Tax features appear focused on the US system
  • Focused on US retirement planning
  • Detailed tax modelling lives on the separate FIREproof site
Web application, Hosted service Web application
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Needs internet

Checked September 24, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.