Mega Backdoor Roth Calculator
2024: total 401(k) limit $69k ($76.5k catch-up). After-tax space = limit − pre-tax − match.
⚠ Tax year 2024 figures. Estimates only — consult a tax professional.
About this tool
Mega Backdoor Roth Calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: Tax & Government — US Federal. Browse more Tax & Government — US Federal tools.