My-Fire 1.06: Monte Carlo Retirement Simulator by A. Shafi. All $$$'s are in today's equivalent value.

my-fire

Monte Carlo Runs
   Simulation variables and Age variables, including Spouse                                    Monte Carlo Normal and Skew Normal Distributions from historical data
       Start Sim          Age          Age Spouse        Stock Med Rate    BAA-Bond Med Rate   T-Bond Med Rate   Inflation Med Rate
     Age End Sim   Retire Age   Retire Age Spouse         Stock Std Dev     BAA-Bond Std Dev   T-Bond Skew Distribution    Inflation Skew Distribution
                             Soc Sec Age
                             Pension Age                                        Other Yearly Increase Rate Values that are assumed to be fixed for this simulation
                            Medicare Age                                         Bank Int Rate    Soc Sec Incr Rate College Inflation     Income Incr Rate
                                                                                       Property Incr Rate Healthcare Inflation Pension Incr Rate  


   Investment Funds: Stock, Bonds and Banks and ratio re-balance                         Property Investment besides Main House, and year of sale
     Stock Value T-Bond Value          Bank Value        Property Value   Property Sale Year
  BAA-Bond Value
   Stock/Bond/Bank Rebalance #years 0=No



    Income (pre-retirement) and Spending (after tax)                                                    Social Security and Pension Income in pre-retirement
          Income        Spend                                               Soc Sec      Pension Income
   Spouse Income Surv'r Spend                                        Soc Sec Spouse


   Gifts/Windfalls (+ve) and Expenditures (-ve)                                                             College Start Years & Costs for up to three kids                                 Healthcare (not employer/Medicare)
   Gift/Expense1         Year                                      Year College Kid1    College per year                                      Pre-Retire
   Gift/Expense2         Year                                      Year College Kid2                                                          Retired pre-Medicare
   Gift/Expense3         Year                                      Year College Kid3                                                                 Post-Medicare

  Simple Tax Effective Rate. Applies to all income, soc security, pension, and bank interest yearly, and all stock/bond deferred

  

  Notes:
  1. All Values are in Todays Dollars - inflation adjusted
  2. More Monte Carlo runs means more reproducible results, but longer simulation time
  3. Assumes windfalls are tax free
  4. Excess Income after all spent is re- invested in stock/bond/bank in the same ratios as the first year.
  5. Draw-down is taken from stock/bond/bank in the same ratios as the first year.
  6. Stock Median and Stdev are fitted from almost years of data from 1928 to 2022. See notes section my-fire
  7. Bond data is a skew normal, fitted from data taken from 1928 to 2022. See notes section my-fire
  8. Inflation data is a skew normal, fitted from data taken from 1923 to 2022
  9. Grey shaded input are recommended default values from research. You can still choose to change these if you have better numbers.
  10. This free simulation is not intended as financial advice. Before making financial decisions, please discuss with your financial advisor