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Assess your retirement with the coinmark.finance calculator. Forecast your projected savings, FIRE number, Coast FIRE status, and success rate of a fully funded retirement.
Assess your retirement with the coinmark.finance calculator. Forecast your projected savings, FIRE number, Coast FIRE status, and success rate of a fully funded retirement.
What's FIRE?
FIRE (Financial Independence, Retire Early) is the minimum retirement portfolio value that allows you to retire comfortably. This number is different for each person but is calculated as below. A 4% withdrawl rate is generally considered safe, and is 1% above the average inflation rate.
\[ \Tiny FIRE = \frac{Annual \, Retirement \, Spend}{Safe \, Withdrawl \, Rate} \]
\[ \small FIRE = \frac{Annual \, Retirement \, Spend}{Safe \, Withdrawl \, Rate} \]
What's Coast FIRE?
Coast FIRE represents the retirement portfolio value at which you no longer need to save to reach FIRE. Reaching Coast FIRE effectively means you can stop contributing to your retirement savings and it's value will continue to grow to FIRE on its own through market returns. Once you reach this Coast FIRE, you can coast to FIRE. See the graph and table below.
\[ \Tiny Coast \, Fire \, achieved = FV \, Current \, Savings ≥ PV \, Fire \]
\[ \small Coast \, Fire \, achieved = FV \, Current \, Savings ≥ PV \, Fire \]
Future Value (FV) of current savings
\[ \Tiny FV = PV * \left( { 1 + \frac{r}{12} } \right)^{n*12} + deposit * \left( { (1+\frac{r}{12})^{n*12} - 1 \over \frac{r}{12} } \right) \]
\[ \small FV = PV * \left( { 1 + \frac{r}{12} } \right)^{n*12} + deposit * \left( { (1+\frac{r}{12})^{n*12} - 1 \over \frac{r}{12} } \right) \]
Present Value (PV) of Fire Goal
\[ \Tiny PV = FV * { 1 \over (1+\frac{r}{12})^{n*12} } \]
\[ \small PV = FV * { 1 \over (1+\frac{r}{12})^{n*12} } \]
Based on the parameters provided...
| Year | Age | Savings | Coast Fire | Difference |
|---|
Simulations
Each simulation starts with your projected portfolio balance. Then for each year, your annual withdrawal is subtracted, and the S&P gains/losses for that year are added. These simulations check to see if your annual withdrawal can be fulfilled throughout the entirety of your retirement.