I always recommend investing in your tax-advantaged accounts before doing any after-tax investing. The reason is if you can reduce your taxable income now, great. Chances are when the time comes to withdraw that money in retirement, you’ll be in a lower tax bracket.
Once you are maxing out your tax-advantaged accounts and are looking to invest more, you might be interested in opening an individual investing M1 account. This post is to give you my review of M1 Finance which is where I invest my post-tax monies. However, you can do tax-advantaged investing with M1 as well!