Nice calculator, I like the Moneyland website a lot.
On the topic on FIRE calculators, I’ve been thinking for a while about a measure that would allow to compare people with different income and tax situation. My idea was to use a Current Savings / Future Expenses ratio (CSFE).
CSFE = Current Savings / Future Expenses
Current Savings: we don’t care about your gross income or your savings ratio. What counts is how much you’re able to save each month.
Future Expenses: we also don’t care about your current expenses, taxes, etc. We need your expected monthly expenses once you retired.
An example would be CSFE = 3000 / 3000 = 1
I would say that a ratio of 1 would mean you’re doing a good job, 2 = great job, 3 = amazing job.
People with the same ratio head towards FIRE at the same pace and would need the same number of years to reach it. What do you think?