A Roth 401(k) can provide key benefits like qualified tax-free withdrawals in retirement. This can go a long way if tax rates rise in the future, you retire in a high tax bracket and/or in a high-tax state, or all of the above.
Moreover, Roth 401(k)s don’t involve required minimum distributions. These are mandatory distributions you must begin taking annually once you reach age 73, or 75 if born in 1960 or later. But without required minimum distributions, your Roth funds can essentially grow indefinitely throughout your lifetime.
Plus, Roth accounts are generally more favorable for heirs under current rules.
But the amount you convert would be taxed as ordinary income for the year you make the conversion. This sudden spike in income can push you into a higher tax bracket and trigger other burdens like taxation on your Social Security benefits and surcharges on certain Medicare premiums.
Luckily, there are a few ways you can strategically make Roth conversions to avoid this. But before we explore that, it’s important to understand the basics.
What Is a Roth Conversion?
A Roth conversion is the process of transferring funds from an account such as a traditional 401(k) to a Roth 401(k).
You may be able to do this if your employer offers both types of accounts.
However, the amount you convert would be taxed as ordinary income. And if it’s large enough, the conversion can trigger other tax burdens.
For instance, the conversion could increase your combined income. As a result, it may trigger or increase taxation on your Social Security benefits.
Moreover, the conversion could also increase your modified adjusted gross income. This, in turn, could trigger the income-related monthly adjustment amount. This is a surcharge on your Medicare Part B and Part D premiums.
However, there are ways to avoid these tax hits.
Convert in the Gap Years
Many financial advisors define the gap years as the time between retirement and before you collect Social Security and before required minimum distributions kick in.
These would be presumably low-income years. So the tax burden on the conversion could be minimal. You may have the opportunity to fill up lower tax brackets without spilling into higher ones. This may clear you of taxes on your Social Security checks and income-related monthly adjustment amount. In fact, some financial experts also refer to the gap years as the sweet spot for a Roth conversion.
Convert During a Market Downturn
During a market downturn, you may essentially be converting depreciated shares from a traditional 401(k) to a Roth 401(k). This can lower the tax burden on the conversion as well because of the lower balance. And when the market recovers, your shares would appreciate in the account tax-free. And you can also enjoy qualified tax-free withdrawals in retirement.
Make Staggered Conversions
One of the main pitfalls you can run into when making a Roth conversion is converting such a high amount that it triggers unintended tax consequences.
However, there’s no rule stating you need to convert your entire traditional 401(k) balance into a Roth 401(k). You can convert as little or as much as you’d like at any given time.
You can even make multiple conversions over time. This is the process known as staggered conversions. But it can get complicated. So it’s recommended you pursue making any Roth conversion with the guidance of a qualified financial and tax adviser.
Be Aware of the 5-Year Rule
To make the most out of a Roth account, you need to understand the five-year rule.
At its most basic, the five-year rule states that in order to make tax- and penalty-free withdrawals, you must be at least 59.5 years old and at least five years must have passed since January 1 of the year you made your first contribution to the Roth account.
But the five-year rule works a bit differently when it comes to conversions.
You must wait five years before withdrawing converted balances or you could face a 10 percent early withdrawal penalty on the conversion. Penalties are eliminated once you reach age 59.5.
But you may still owe income taxes on the earnings portion of a withdrawal if five years have not passed since January 1 of the year you made the conversion.
Moreover, you must understand that the five-year rule applies separately to each conversion. So it’s important to keep this in mind if you plan on making staggered conversions.
The Bottom Line
Converting funds from a traditional 401(k) to a Roth 401(k) can provide a variety of benefits such as qualified tax-free withdrawals and bypassing RMDs. But the conversion would trigger a taxable event that, in turn, could raise additional tax burdens.
You may be able to avoid or limit this by converting during your gap years or during market downturns. You may also benefit from making staggered conversions rather than converting your entire pre-tax balance. But the overall process of a Roth conversion can be complex and lead to surprises if you’re not careful. This is why it’s important to pursue a Roth conversion with the help of a qualified financial adviser.
The Epoch Times copyright © 2026. The views and opinions expressed are those of the authors. They are meant for general informational purposes only and should not be construed or interpreted as a recommendation or solicitation. The Epoch Times does not provide investment, tax, legal, financial planning, estate planning, or any other personal finance advice. The Epoch Times holds no liability for the accuracy or timeliness of the information provided.
