When you retire, your 401(k) shifts from a savings vehicle into an income source. The money you contributed over your career, plus any investment growth, becomes available for withdrawals. Those withdrawals are taxed as ordinary income, and once you reach a certain age, the IRS requires you to start taking them whether you want to or not. How you choose to draw down your 401(k) can significantly affect your tax bill and how long your savings last.
Ways to Take Money Out
Once you leave your employer and meet the age requirements, you generally have several options for accessing your 401(k) funds. The specifics depend on what your plan allows, but most plans offer some combination of the following.
A lump-sum distribution lets you withdraw the entire balance at once. This gives you immediate access to all your money, but the full amount counts as taxable income in the year you receive it. For a large balance, that can push you into a much higher tax bracket and result in a surprisingly large tax bill.
Periodic withdrawals let you take money on a schedule, whether monthly, quarterly, or annually. This approach spreads your taxable income across multiple years, which often results in a lower overall tax burden than taking everything at once. Many retirees use periodic withdrawals to replace their paycheck.
Partial withdrawals give you flexibility to pull out specific amounts as needed. Not every plan offers this option, so check with your plan administrator. You can also leave the money in the account and let it continue growing tax-deferred until you need it or until required minimum distributions kick in.
How Withdrawals Are Taxed
With a traditional 401(k), every dollar you withdraw is taxed as ordinary income. That includes both your original contributions (which were made pre-tax) and any investment gains. The money gets added to whatever other income you have that year, such as Social Security benefits, pension payments, or part-time earnings, and your total determines your tax bracket.
If your plan offers Roth 401(k) contributions, those withdrawals work differently. Since Roth contributions were made with after-tax dollars, qualified withdrawals in retirement come out tax-free, including the earnings. To qualify, the Roth account must have been open for at least five years and you must be 59½ or older.
One important detail: if your plan pays a distribution directly to you rather than transferring it to another retirement account, the plan is required to withhold 20% for federal taxes. That withholding applies even if you plan to roll the money over later. If you do roll it over within 60 days, you’ll need to come up with the withheld amount from other funds to avoid owing taxes and penalties on the shortfall. The simplest way around this is to request a direct transfer, where the money moves straight from your 401(k) to another retirement account without passing through your hands.
Required Minimum Distributions
The IRS doesn’t let you defer taxes on your 401(k) forever. You must start taking required minimum distributions, commonly called RMDs, once you reach age 73. The deadline for your first RMD is April 1 of the year after you turn 73. After that first year, each annual RMD must be taken by December 31.
There’s one exception worth knowing: if you’re still working at 73 and your employer’s plan allows it, you can delay RMDs from that specific employer’s 401(k) until you actually retire. This doesn’t apply to 401(k) accounts from previous employers or to IRAs.
The amount you must withdraw each year is calculated by dividing your account balance (as of December 31 of the prior year) by a life expectancy factor the IRS publishes in its Uniform Lifetime Table. As you age, the required percentage increases, meaning you’ll withdraw a larger share of the account each year.
Missing an RMD is expensive. The penalty is 25% of the amount you should have withdrawn but didn’t. If you catch the mistake and take the distribution within two years, the penalty drops to 10%, but that’s still a steep cost for an oversight. Setting a calendar reminder or working with your plan administrator to automate RMDs can prevent this.
The Rule of 55
Most 401(k) withdrawals before age 59½ trigger a 10% early withdrawal penalty on top of regular income taxes. But if you leave your job during or after the calendar year you turn 55, you can take penalty-free withdrawals from that employer’s 401(k). This is known as the Rule of 55.
This rule only applies to the 401(k) from the employer you separated from at age 55 or later. It doesn’t cover 401(k) accounts at previous employers or IRA accounts. If early retirement is part of your plan, this distinction matters. Rolling your 401(k) into an IRA before you turn 59½ would actually eliminate your ability to use the Rule of 55 and lock you into the 10% penalty for early withdrawals.
Rolling Over to an IRA
Many retirees roll their 401(k) into a traditional IRA to consolidate accounts and gain more control over their investments. An IRA typically offers a much wider selection of funds, stocks, and bonds than a 401(k) plan. You also get to choose your own brokerage, which means you pick the platform and fee structure that works best for you.
That said, keeping money in your former employer’s 401(k) has its own advantages. Large employer plans often negotiate institutional pricing on investment funds, which translates to lower fees than what you’d pay buying the same funds in an individual IRA. The difference might look small, a fraction of a percent, but over a long retirement it compounds into real money.
Creditor protection is another consideration. Federal law shields 401(k) assets from creditors and bankruptcy proceedings. IRAs get some bankruptcy protection (up to roughly $1 million for traditional and Roth IRA assets), but protection from other types of legal judgments varies by state. If lawsuit risk is a concern, the 401(k) wrapper offers stronger and more consistent protection.
If your 401(k) holds appreciated company stock, rolling it into a brokerage account instead of an IRA lets you take advantage of a strategy called net unrealized appreciation. The stock’s original cost basis gets taxed as ordinary income when distributed, but any gains above that are taxed at the lower capital gains rate when you eventually sell. Rolling that same stock into an IRA means all of it gets taxed as ordinary income when withdrawn.
Leaving the Money in Your Old 401(k)
You’re not required to do anything with your 401(k) the moment you retire. As long as your balance meets the plan’s minimum (many plans require at least $5,000 to keep the account open), you can leave it where it is. The investments continue to grow tax-deferred, and you can take withdrawals on your schedule until RMDs begin.
Some retirees keep their 401(k) in place because they value the plan’s stable value funds, a type of conservative investment that aims to preserve principal while paying modest interest. These funds are only available inside employer-sponsored plans and can serve as a low-risk anchor in your portfolio. You won’t find them in an IRA.
The main downside of leaving your account behind is that you’re limited to the plan’s existing investment menu and withdrawal rules. Some plans restrict how often you can take partial withdrawals or require you to call a plan administrator rather than managing everything online. If flexibility matters to you, a rollover to an IRA may be the better fit.
Building a Withdrawal Strategy
How much you take out each year, and from which accounts, directly shapes your tax situation in retirement. If you have both traditional 401(k) savings and Roth savings, you can mix withdrawals strategically. In years when your other income is low, pulling more from the traditional account keeps you in a lower bracket. In higher-income years, leaning on Roth withdrawals avoids adding to your taxable income.
A common guideline is the 4% rule: withdraw 4% of your balance in the first year of retirement, then adjust that dollar amount for inflation each year after. It’s a starting point, not a guarantee, and your actual withdrawal rate depends on your total savings, other income sources, health, and how long you expect retirement to last. Someone retiring at 55 needs their money to stretch further than someone retiring at 67.
Social Security timing also plays into this. If you delay Social Security benefits, you’ll draw more heavily from your 401(k) in the early years of retirement. Once Social Security kicks in, you can reduce 401(k) withdrawals and let the remaining balance continue growing. Coordinating these income streams is one of the most impactful decisions you’ll make in retirement.