I'm trying to figure out the math for calculating when I'm going to hit my crossover point (passive income equals expenses). I want to incorporate current invested assets (and the return on them), as well as savings rate.
For an example of easy figures to work with:
500k invested assets
assume 7% return
annual savings of 50k
current expenses 40k (1 million needed)
Anyone know the math to calculate how many years to hit it? I believe there's a natural log in there for the compounded return, but the specifics are beyond me.
