Your 401(k)s and IRAs Have a Dark Side
Yes, they are a tax-advantaged way to save for retirement, but they come with some disadvantages you should know about.
Two people can look at a Rorschach ink blot and one will see a refined, beautiful woman and another will see an old spinster.
The same can be said of your retirement savings. You can also look at a retirement account and see all the good points or look at it from a different perspective and see all the shortcomings.
It's easy to find information on the advantages of a pretax retirement account, like a traditional IRA or a 401(k), including the tax savings, the tax-deferred growth, and providing a source of retirement income.
From just $107.88 $24.99 for Kiplinger Personal Finance
Become a smarter, better informed investor. Subscribe from just $107.88 $24.99, plus get up to 4 Special Issues
Sign up for Kiplinger’s Free Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
What you don't hear about as often are the disadvantages of such accounts. Knowing what those are may help you strike a more sensible balance in how you save money.
Problems with Your Estate Plans Can Crop Up
For starters, one downfall of pretax retirement plans is that it can be easy to make a mistake when planning for how your heirs will inherit them. People often mistakenly believe that because they have a will or a trust, their bases are covered, but pretax retirement plans are not directly regulated by an estate plan.
Instead, your “beneficiary election form” determines what happens to your retirement account after you die. In most cases, the attorney who is drafting a will or a trust doesn't get involved in properly titling names on this beneficiary form.
Because of this, often the heirs named on a beneficiary form are not titled the same as they are in your estate plan, which can cause problems.
For example, when an attorney drafts a trust, they will often use “per stirpes” language, which keeps each heir’s share of an inheritance in their bloodline, if they pass prematurely.
Because the typical retirement plan owner titles their own beneficiary form without the help of an attorney, very rarely are they aware of such language.
For instance, say a man owns a retirement account and plans that his three sons (and their children) will inherit it equally. If the man and one of his sons were both killed in a car wreck, without per stripes language, the deceased son’s share of the retirement account would go to the surviving co-beneficiaries, and his children would get nothing.
Also, keep in mind that if you update your heirs in your estate plan due to divorce, birth, death or something else, it does not automatically update your beneficiaries on your retirement account. This could result in the wrong person or persons getting your retirement assets at your death, like an ex-spouse, if you forget to update your beneficiary form.
Tax Bombs Hide in Pretax Retirement Accounts
Pretax retirement plans, such as traditional IRAs and 401(k)s, never receive the more favorable long-term capital gains tax treatment that taxable brokerage accounts enjoy. To illustrate, compare the tax treatment of gains in a taxable account against those of a pretax retirement account:
Example 1: You owe $13,500 in taxes on a taxable investment. Say a stock purchased for $10,000 in a taxable account grows to $100,000 over the next 20 years and is then sold. This will trigger a $90,000 long term capital gain. If you were in a 24% tax bracket, instead of paying 24% of the $90,000 in taxes (a tax bill of $21,600), the gain would be taxed at a 15% long-term capital gain tax rate, resulting in a reduced tax of $13,500.
Example 2. You owe $24,000 in taxes on a similar pretax investment. However, if the same thing was done inside a pretax retirement account, you would not receive the more favorable long-term capital gain tax treatment if you took the sales proceeds out of the account. In this case, the full $100,000 would be taxed in your 24% tax bracket, resulting in a tax hit of $24,000 — or $10,500 more.
As for inheriting stock, the same principles hold true: Pretax retirement accounts are at a disadvantage when compared to taxable accounts. Let’s look at a similar scenario where a man purchased stock for $10,000 in a taxable account and it appreciates to $100,000. Say the man dies, leaving the shares to his son. In this case, all taxable appreciation up to the day he died is forgiven when the son sells, i.e., the cost basis of the shares is “stepped up” to the value on the date of the man’s death. So, in this case the son would inherit $100,000 tax free. He would only owe taxes on any gains above that $100,000 that occurred between his father’s death and when he actually sold the shares.
This can result in huge tax savings where a lot of highly appreciated investment securities are involved.
This would not be the case if the same stock was owned inside a pretax retirement plan. When the son sold his stock after his father’s death, and withdrew the proceeds, the entire $100,000 would be fully taxable as ordinary income. If he was in the 32% tax bracket, he would pay $32,000 in taxes.
Pretax Retirement Accounts Fall Short as a Gift Vehicle
Money in a traditional IRA or a 401(k) or other pretax company retirement plan cannot be gifted directly, as would be the case in a taxable non-retirement account.
In 2020, the annual gift tax exclusion is $15,000. This means if you have money in a taxable brokerage account, you can make a gift of up to $15,000 to as many people as you like without having to deal with gift tax consequences. The gift is not taxable to the donor when made, nor is it considered taxable income to the recipient.
On the other hand, money taken out of a pretax retirement account to make such a gift would trigger ordinary income tax upon withdrawal. In a 22% tax bracket, $3,300 in taxes would have to be paid upon withdrawal of the $15,000 before the gift could be made to recipients, such as your children.
Don’t Forget about RMDs
Pretax retirement accounts also have taxable required minimum distributions that you must start taking in the year you turn age 72, and even sooner in the case of a pretax inherited IRA. These distributions drive up your income, boosting your tax bill, and they are mandatory, whether you like it or not.
There are no such forced distributions that trigger tax on other assets.
Striking Balance
While the disadvantages of 401(k)s, traditional IRAs and other pretax retirement accounts don't invalidate the wisdom of putting money in them, they do suggest that there might be a need to strike a better balance between funding a retirement account and a taxable account to diversify your tax strategies.
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.

-
Stocks Extend Losing Streak After Fed Minutes: Stock Market TodayThe Santa Claus Rally is officially at risk after the S&P 500's third straight loss.
-
What Bilt Cardholders Need to Know as Wells Fargo Exits the ProgramA major shake-up in the Bilt Rewards program could affect your credit card, rent rewards and points strategy heading into 2026.
-
3 Major Changes to the Charitable Deduction in 2026Tax Breaks About 144 million Americans might qualify for the 2026 universal charity deduction, while high earners face new IRS limits. Here's what to know.
-
I'm a Financial Pro: You Really Can Make New Year's Money Resolutions That Stick (and Just Smile as Quitter's Day Goes By)The secret to keeping your New Year's financial resolutions? Just make your savings and retirement contributions 100% automatic.
-
Domestic vs Offshore Asset Protection Trusts: A Basic Guide From an AttorneyLearn the difference between domestic asset protection trusts and foreign or offshore asset protection trusts to help you decide what might work best for you.
-
As We Age, Embracing Our Own Self-Doubt Can Be a Gift: A Cautionary Tale About Elder Financial AbuseAn aging couple hired a company that illegally required large deposits, and then they decided to stick with the company even after an employee stole from them.
-
Now That You've Built Your Estate Planning Playbook, It's Time to Put It to WorkYou need to share details with your family (including passwords and document locations) and stay focused on keeping your plan up to date.
-
I'm a Wealth Adviser: These 10 Strategies Can Help Women Prepare for Their Impending Financial PowerAs women gain wealth and influence, being proactive about financial planning is essential to address longevity and close gaps in confidence and caregiving.
-
I'm a Financial Planning Pro: This Is How You Can Stop These 5 Risks From Wrecking Your RetirementYour retirement could be jeopardized if you ignore the risks you'll face later in life. From inflation to market volatility, here's what to prepare for.
-
Are You Hesitating to Spend Money You've Spent Years Saving? Here's How to Get Over It, From a Financial AdviserEven when your financial plan says you're ready for a big move, it's normal to hesitate — but haven't you earned the right to trust your plan (and yourself)?
-
Time to Close the Books on 2025: Don't Start the New Year Without First Making These Money MovesAs 2025 draws to a close, take time to review your finances, maximize tax efficiency and align your goals for 2026 with the changing financial landscape.