The 401(k) Trick That Lets Executives Contribute Up to $69,000 a Year

"The mega backdoor Roth allows high earners to move large sums into permanently tax-free accounts under current law, provided their specific plan allows after-tax contributions and in-plan Roth conversions."

"The total annual additions to the plan from all sources combined rose to $72,000 in 2026, creating a significant opportunity for high earners to maximize their retirement savings."

"Once converted to Roth, future gains are never taxed again, regardless of how large the account grows or what tax rates look like in 20 years."

"HR departments rarely advertise the mega backdoor Roth feature, so individuals must check their Summary Plan Description for eligibility by searching for specific phrases."

The mega backdoor Roth is a strategy for high earners aged 50 to 65, allowing them to contribute more to their 401(k) plans. This method utilizes after-tax contributions and in-plan Roth conversions, which are available in about 25% of plans, typically at larger employers. The total annual contribution limit for 2026 is $72,000, which includes employee deferrals, employer matches, and after-tax contributions. Once converted to Roth, future gains are tax-free, making it a valuable option for maximizing retirement savings.

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