|
In the best case scenario, what net worth can a typical Google or Facebook engineer (not the highest paid, but the average engineer at Google or Facebook) expect to have if he/she retires at 55? One estimate I have seen is $1 to $2 million USD, which I think is too low [1]. I would estimate it at at $7 to $14 million USD. Here's the back-of-the-envelope calculation I used to come up with this number: Annual salary: $250K. Assume 25% tax, which leaves us with $187.5K, which is about $15K per month. Assume $5000 in monthly expenses, which leaves us with $10K per month investable money. (Note: since net worth includes house and 401(k) I have not deducted mortgage or 401(k) payments). So $10K includes those items.) Now use a compound interest calculator [2] to see what $10K per month at 8% interest (assume investment in S&P 500 and allow for some market crashes) will result in, at the end of 30 years. It is about $14 million, which would include your house and your 401(k). [1] https://www.quora.com/What-is-a-good-software-engineer%E2%80%99s-e-g-working-at-Google-etc-usual-net-worth-by-the-age-of-55
[2] https://www.investor.gov/additional-resources/free-financial-planning-tools/compound-interest-calculator |
The challenge with extrapolating this out to retirement is that tech changes very fast, and fortunes can fall just as rapidly as they rise. Particularly if they're held in stock compensation, which Google and Facebook rely on extensively.
Many Sun Microsystems engineers were worth > $10M at the peak of the dot-com boom. A couple years later and they were insolvent, with tax bills larger than their net worth. A decade after that and their employer didn't exist anymore. Of course, a significant number of them quit and joined Google when their employer's stock crashed, and those folks have net worths > $100M or so.
If you extend out to timescales of 35 years, you not only have to worry about your employer disappearing, but you also have to worry about your industry and municipality disappearing. Right now folks who own houses in the Bay Area are sitting pretty - but what if the Bay Area goes the way of Detroit, with the tech industry obsoleted by foreign competition and houses not sellable at any price? The question isn't quite academic: Detroit had its heyday in 1950, and 35 years later, by 1985, it had lost 40% of its population and its major companies were non-competitive.