Taxable accounts. Conventional wisdom suggests withdrawing money from taxable accounts first. The main rationale for tapping taxable accounts first is that it gives the assets in your tax-deferred retirement accounts more time to benefit from potential tax-deferred growth.
Tax-deferred accounts. Distributions from traditional IRAs, 401(k)s and other tax-deferred retirement plans are generally subject to income taxes. Ideally, you will be in a lower marginal tax bracket when you start withdrawing money from these accounts. At some point you must start taking annual required minimum distributions (RMDs).
Roth IRAs. Because Roth IRAs offer potentially tax-free earnings, you may want to consider keeping these accounts intact for as long as possible. The RMD rules do not apply to Roth IRAs during the account owner’s lifetime.