We have age based portfolio's for my kids. Right now we have 27k in my 6.5 year olds 529. We have 80% in mutual funds and 10% in bonds ( I think?) and for my 4.5 year old we have 21k, 95% in mutual funds. I'm sure the 4.5 year old will switch to 80% soon. I'm thinking of going more aggressive with both of their accounts, getting out of the age-based track and throwing it all in index funds for now. I'm wondering at what age would it be smart to reallocate the funds to include bonds and be more conservative? 5 years out from college start date? 3 years? I'd like to get as much growth as possible. I know that comes with risk so I'm wondering how far out from college starting would be good to get more conservative.