FI Calc vs Retiris

FI Calc is a free web calculator for evaluating retirement plans and withdrawal strategies with historical market data. It runs simulations from annual figures covering 1871 through 2024, compiled from Robert Shiller’s data set, while warning that historical results do not guarantee future performance. Users can model equities, bonds and cash, set rebalancing and changing allocations, and add wages, Social Security or extra withdrawals for future expenses. The calculator provides income projection, savings growth projection, withdrawal planning, Social Security modeling and scenario analysis. Simulations can be exported as CSV files for spreadsheet analysis. Inputs are processed in the browser; saved or shared calculations are encoded in URLs that may reach the hosting provider, services and recipients. Google Analytics may receive page URLs containing saved inputs. FI Calc does not automatically model taxes or required minimum distributions and currently has no Monte Carlo simulations. The free plan costs nothing.

Retiris has no write-up on Specifiction yet; its figures are above.