Max employee contributions to 403b/401k (roth or traditional doesn't matter) is 18,500 per year total. If you go over that you will regret it. Employers don't collaborate regarding this you need to calculate where you will be at the end of the year early on and plan ahead to avoid going over. The max contributions and employer match is 55,000 per year (would take pretty generous matching). 457 is separate and another 18,500 a year. Roth or Traditional IRA is 5500 per year (11,000 if married) with 5500 per individual. After certain income levels you cannot directly contribute to a Roth or get the deduction from a traditional IRA (so most people do backdoor roth contributions at that point). Beyond that you are looking at 529s, HSA, real estate, or taxable accounts. Putting low dividend Vanguard total stock market funds in the taxable account is a good idea as well as intermediate nontaxable bonds for diversification.