Research
Research Studies
Original, data-driven analyses of how Americans actually use Roth IRAs — built from public IRS Statistics of Income data, fully cited, and free to reuse with attribution.
Study No. 1 · Published 2026-05-27
The Backdoor Roth, by the Numbers
How a 2010 rule change reshaped high-earner retirement saving: conversions jumped 847% to $64.8B the year the $100K income limit was repealed — with 79% of the dollars coming from filers above $100K. Four charts, an interactive explorer, and downloadable IRS data.
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More to come
We publish new IRS-data studies periodically — on conversions, contributions, and the geography of Roth saving. Check back, or follow @RothIRAHub for new releases.