Explore many proofs.
Build your FIRE.
FIREproof enables you to model, plan, and visualize your retirement… and all that happens along the way.
A retirement planning tool from the creator of cFIREsim.com, a mainstay in the retirement calculator world and FIRE community.
A strong foundation, propelled by community...
A fresh look for all of the features users have come to love about cFIREsim, plus enhancements! More development and refinement in the works.
Portfolio Success
Show the overall success of your portfolio in retirement based on your inputs and historic datasets.
Drawdown Strategies
Use basic inflation-adjusted drawdown numbers or a variety of popular strategies from the retirement planning world. Guyton-Klinger, VPW, Variable CAPE, etc. Set lower and upper bounds for drawdown to see their effects.
Custom Inflows/Outflows
Tailor your financial strategies with adjustable parameters for every stage: income streams, expenses, recurring or one-time.
Visual Analysis
Review your plan using informative graphs depicting all income, spending, and taxes.
Accounts and Account Types
Create individual accounts with specific allocations and account types like brokerage, 401k, IRA, checking, etc.
Taxes
Calculate income and capital gains taxes for each year of the simulation.
Withdrawal Priorities
Select withdrawal options to filter your accounts. Use defined criteria to tweak and optimize your withdrawal strategies.
Drill-down Details
Look through year-by-year, transaction-by-transaction data to visualize how accumulation and drawdown strategies unfold.
Save your work
Save individual simulations. In a future iteration comparisons between multiple simulations will be enabled.
About Me
Lauren Boland
Founder & Software EngineerLong-time FIRE enthusiast. Numbers nerd. Compound interest is her friend.
"One of my favorite simulators is cFIREsim.com"
"The tool that you've built here is absolutely fantastic, really well researched, and tons of great data. Thank you so much for building it."
"We for sure nerded out for hours on cFIREsim for our first WPF Long Weekend retreat."
"If there was a list of heroes of the financial independence movement, I'd advocate for Lauren Boland being on that list... Lauren developed cFIREsim, one of the more powerful and popular retirement calculators among members of the FIRE community."
Feature Roadmap
Pre-defined Inflows/Outflows Create a UI with predefined Inflows/Outflows that are commonly used. (Social Security, Pensions, Mortgage, College Costs, etc)
What-if panel Quick access buttons for various scenarios like: "What if inflation is 1% more than CPI?", "What if taxes go up by 20%?", "What if there is a market drop in the first 5 years of retirement?"
Compare 2 saved simulations Provide an interface to compare the stats of 2 saved simulations.
Deposit/Withdraw Priorities Interface Provide an interface to add/change deposit and withdraw rules. Rules to Avoid early withdrawal penalties are already in place, but not editable.
Theme Changer Provide an interface to edit colors on the website (high contrast, dark mode, etc).