Years Average 401(k) return
1 year (2020) 15.1%
3 years (2017-2020) 9.7%
5 years (2015-2020) 11.0%
And another:
The average rate of return on 401(k)s from 2015 to 2020 was 9.5%, according to data from retirement and financial service provider, Mid Atlantic Capital Group.
Not inflation adjusted but inflation was very low during that time frame. You could argue that it was quite the bull market but this is for average 401k which would also include bonds so I think an all stock investment return of 9 percent is conservative.
