The "old" rule of thumb was $1000 for every year of age, but this was back in the 1970s for the baby boomers. My sons are 36 and 41, they make about $42k and $55K respectively. When I left IL to take a new job in GA in 1987, I went from about $33k to $40K, and I was 40 years old. I made much more money the last 10-15 years I was working.