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New company doesn't allow 401k deposits for 6 months, what to do with money I used to deposit?
I would open a taxable account with the same custodian that manages your Roth IRA (e.g., Vanguard, Fidelity, etc.). Then within the taxable account I would invest the extra money in low cost, broad market index funds that are tax efficient. Unlike in your 401(k) and Roth IRA, you will now have tax implications if your funds produce dividends or realize a capital gain. That is why tax-efficient funds are important to minimize this as much as possible.  The 3-fund portfolio is a popular choice for taxable accounts because of simplicity and the tax efficiency of broad market index funds that are part of the three fund portfolio. The 3-fund portfolio normally consists of Depending on your tax bracket you may want to consider municipal bonds in your taxable instead of taxable bonds if your tax bracket is 25% or higher.  Another option is to forgo bonds altogether in the taxable account and just hold bonds in retirement accounts while keeping tax efficient domestic and international tock funds in your taxable account. Then adjust the bond portion upward in your retirement accounts to account for the additional stocks in your taxable accounts. This will maintain the asset allocation that you've already chosen that is appropriate for your age and goals.