The 401(k) Trap: How Retirees With High Savings Are Getting Hit With a Surprise Tax — and How To Avoid It

Ever since the 401(k) option was added to the American tax code in 1978, the employer-sponsored retirement savings plan has been a foundational element of any smart investment portfolio and a crucial financial safety net for most retirees’ golden years.

However, some retirees are discovering that a robust 401(k) balance can actually cost them money — specifically, higher taxes on Social Security benefits. Read on to learn more.

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According to a recent analysis from 247WallSt, retirees who have more than $800,000 held in their 401(k) accounts could find themselves prey to higher taxes. Essentially, required minimum distributions (RMDs) for taxpayers over the age of 75, when combined with Social Security benefits, can push a retiree’s income to a point where 85% of those Social Security benefits become vulnerable to taxation — what 247WallSt calls the “Social Security Clawback.”

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David Beren of 247WallSt has recommended that retirees execute Roth conversions during the period between when retirement starts (typically around age 65) and when RMDs being (roughly a decade later) and to do so at lower marginal tax rates. This can lower future RMDs, thereby lessening Social Security taxation.

Evan Mills, financial analyst at Scholar Advising, agreed when speaking to GOBankingRates. “The best thing to look at is Roth conversions, taking money from those pretax accounts and moving it into Roth. That’s going to lower your RMDs in the long run,” he said.

“Now once you’re in RMD years, it becomes a little different. At that point, if you’re able to, something like Qualified Charitable Distributions (QCDs) can help. You’re sending those RMDs directly to a charitable organization, which lowers your taxable income and that can help reduce how much of your Social Security is actually taxed,” Mills explained.

“Another piece of it is asset location,” Mills added. “You generally want lower growth assets sitting in those pretax accounts to help keep RMDs lower over time. And then your higher growth assets, those are better suited for Roth accounts or even taxable accounts, where capital gains treatment can be more favorable than ordinary income. That helps control the impact of RMDs over the long run.”

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This article originally appeared on GOBankingRates.com: The 401(k) Trap: How Retirees With High Savings Are Getting Hit With a Surprise Tax — and How To Avoid It