04/25/2026
For Roth IRA fans...
You can lower your tax bill by taking advantage of tax breaks at the office—like employer-funded health care and retirement plans. But while many workers can take advantage of a retirement account, the Mega Backdoor Roth is a strategy designed for high earners who have already maxed out their standard 401(k) contributions. It works by allowing after-tax contributions to a 401(k) (beyond the usual deferral limits) and then converting those funds into a Roth account. If structured correctly, this can allow up to $47,500 per year to be shifted into a tax-favored account—well above the limit for traditional Roth IRAs and without income restrictions.
That kind of contribution capacity can make a meaningful difference over time, especially for those concerned about future tax rates, required minimum distributions, and overall retirement flexibility. However, not all employer plans allow after-tax contributions or in-service conversions, so eligibility depends on plan design. When available, though, the Mega Backdoor Roth can be a highly effective way to build a sizable pool of tax-free income alongside other retirement savings.