I'll second the tax aspect considerations. Keep in mind that if you're investing in mutual funds, the managers of those funds are buying and selling stocks within the funds, likely creating capital gains (on which you get the privilege of paying taxes). I invested on my own for years, but then also received an inheritance that was more than what I had previously invested. At that point, I turned to a professional to manage all my investments. There's value in having someone coordinate all your investments - as you likely have (or will have) several different buckets. In my case, I have the inherited account, a rollover IRA from previous jobs, and my current job 401k. My guy makes sure my overall picture is the mix of investment vehicles, risk profiles, and taxable income generation (or tax loss harvesting) fits with what I'm comfortable doing.