Mega Backdoor Roth 2026: How After-Tax 401(k) Money Fills Your Roth
A practical 2026 guide to the Mega Backdoor Roth: how after-tax 401(k) contributions plus an in-plan Roth conversion or in-service rollover work, the 415(c) overall limit framework, whether your plan qualifies, the pro-rata trap, a step-by-step process, who it fits, and the common mistakes.