In 2010, estimated Roth IRA conversions reached $64.8 billion, up about 846% from 2009. That jump coincided with the removal of the conversion income limit and a special income-reporting option. This historical study follows IRS estimates from 2007 through 2014—not today’s conversion activity.
A conversion moves retirement money into a Roth IRA; it is different from making a regular annual contribution. The tables below measure conversion amounts and taxpayers who converted. They do not identify which people used a backdoor Roth strategy.
What changed in 2010?
Before 2010, the conversion income test generally allowed modified adjusted gross income (MAGI) of no more than $100,000. The old page incorrectly said that exactly $100,000 was disqualifying. A separate married-filing-separately restriction also applied; people who lived apart from their spouse all year were treated as single for this purpose. See 2009 Publication 590, printed page 28.
TIPRA §512, enacted in May 2006, removed those conversion income and filing-status restrictions for tax years beginning after 2009. This was not a repeal of the income limits for regular Roth IRA contributions.
A special option for 2010—not a current rule
The taxable portion of a 2010 conversion was generally included in income half in 2011 and half in 2012, unless the taxpayer elected to include it all in 2010. That split concerned taxable income, not necessarily equal tax bills; events such as certain withdrawals could accelerate inclusion. 2010 Publication 590, printed pages 29 and 63, explains the historical rules.
The IRS’s Fall 2013 analysis attributes the surge primarily to expanded conversion availability. Our comparison is descriptive: it does not isolate how much of the increase came from the repeal, the reporting option or other factors.
The spike stands out. The window matters.
Conversions rose from about $6.84 billion in 2009 to $64.77 billion in 2010. In this eight-year window, 2010 was the only year when conversion dollars exceeded total IRA contribution dollars. We are not claiming it was the only such year in all IRS history.
Bars start at zero; full scale $70.00B.
Source: IRS SOI Table 2, 2007–2014. Nominal dollars; estimates, not inflation-adjusted amounts. Exact source values are in the annual table and CSV.
From 2011 through 2014, conversion amounts ranged from about $7.51 billion to $18.11 billion. Each exceeded the 2009 amount, but these four observations do not establish a permanent “new normal.”
Teal: conversions · Rust: total IRA contributions. Both start at zero on the same $70 billion scale.
Source: IRS SOI Table 2, 2007–2014. Nominal dollars; estimates, not inflation-adjusted amounts. Exact source values are in the annual table and CSV.
Two different flows: the contribution series covers contributions to Traditional, Roth, SEP and SIMPLE IRAs, including applicable employer contributions. Conversions move existing retirement money. Neither series is a measure of investment returns, and conversion dollars are not all new household saving.
| Tax year / IRS source | Conversions ($1,000) | Total contributions ($1,000) | Taxpayers converting |
|---|---|---|---|
| 2007 | 2,248,301 | 58,760,907 | 137,236 |
| 2008 | 3,664,056 | 55,579,676 | 182,124 |
| 2009 | 6,844,696 | 50,650,531 | 278,569 |
| 2010 | 64,767,828 | 51,210,692 | 869,400 |
| 2011 | 11,251,644 | 50,278,745 | 372,191 |
| 2012 | 18,105,159 | 55,219,025 | 457,827 |
| 2013 | 7,510,133 | 59,973,436 | 438,218 |
| 2014 | 8,255,153 | 62,745,691 | 488,827 |
Where the 2010 conversion dollars appear
About 78.6% of the converted dollars were in return-AGI groups of $100,000 or more; 63.1% were in groups of $200,000 or more. The $200,000–under-$500,000 group had the largest dollar total, while the $100,000–under-$200,000 group had the largest estimated number of taxpayers converting.
AGI is not a salary—or the old eligibility test
Adjusted gross income (AGI) is a tax-return measure, not simply earnings from a job. Both spouses on a joint return are assigned to the return’s AGI group. The old conversion test used a specially modified AGI, which excluded conversion income and made other adjustments. These tables cannot tell us which 2010 converters would have failed the old test.
They also do not separate conversions of existing pre-tax savings from the nondeductible-contribution-then-conversion sequence often called a backdoor Roth. They are not a measure of mega-backdoor activity through workplace plans.
Bars start at zero; full scale $20.00B.
Source: IRS SOI Table 2, 2010. AGI groups are not salary bands or conversion-eligibility groups.
Explore one AGI group
Choose a group to see its estimated count, dollars and mean. The complete table remains available below without JavaScript.
An average is not a typical saver
Among taxpayers who converted, the $1 million-or-more AGI group averaged about $454,850, compared with $27,792 in the $50,000–under-$75,000 group. These are arithmetic means—total dollars divided by the estimated number of converting taxpayers—not medians, account balances or suggested conversion sizes.
Nor does the mean rise at every income step: the “No adjusted gross income” group averaged about $166,223. That is one reason to show all groups rather than tell a simple “higher income always means a bigger conversion” story.
Bars start at zero; full scale $500,000.
Source: IRS SOI Table 2, 2010. Calculated means, not medians, recommendations or tax bills.
| Return AGI | Taxpayers converting | Converted ($1,000) | Mean ($) | Dollar share |
|---|---|---|---|---|
| No adjusted gross income | 14,801 | 2,460,273 | 166,223 | 3.8% |
| $1 under $5,000 | 2,065 | 49,765 | 24,099 | 0.1% |
| $5,000 under $10,000 | 8,074 | 116,514 | 14,431 | 0.2% |
| $10,000 under $15,000 | 9,452 | 137,767 | 14,575 | 0.2% |
| $15,000 under $20,000 | 15,053 | 699,557 | 46,473 | 1.1% |
| $20,000 under $25,000 | 15,779 | 380,077 | 24,088 | 0.6% |
| $25,000 under $30,000 | 11,000 | 292,789 | 26,617 | 0.5% |
| $30,000 under $40,000 | 34,598 | 1,013,552 | 29,295 | 1.6% |
| $40,000 under $50,000 | 45,835 | 1,394,359 | 30,421 | 2.2% |
| $50,000 under $75,000 | 99,949 | 2,777,832 | 27,792 | 4.3% |
| $75,000 under $100,000 | 116,289 | 4,567,962 | 39,281 | 7.1% |
| $100,000 under $200,000 | 250,889 | 9,987,392 | 39,808 | 15.4% |
| $200,000 under $500,000 | 168,184 | 18,159,529 | 107,974 | 28.0% |
| $500,000 under $1,000,000 | 45,830 | 8,356,295 | 182,332 | 12.9% |
| $1,000,000 or more | 31,602 | 14,374,165 | 454,850 | 22.2% |
| All taxpayers | 869,400 | 64,767,828 | 74,497 | 100.0% |
How to check the numbers
We use the IRS Statistics of Income Accumulation and Distribution of IRAs tables, Table 2 for each tax year from 2007 through 2014. The source files were rechecked October 29, 2026. This is a deliberately bounded historical window; newer IRS tables are available.
- Source and population: estimates from matched tax-return and information-return data (Forms 1040, 5498 and 1099-R), not a census or a survey of motivations. Counts are taxpayers, not conversion transactions or households. A taxpayer can have multiple conversions.
- Units: the source publishes amounts in thousands of nominal dollars. The downloads preserve those values; charts use billions or whole-dollar means. No inflation adjustment is applied.
- Annual totals: Table 2’s “All taxpayers” row supplies conversion amounts and total contributions. We use the same table family throughout rather than mixing totals from different breakdowns.
- 2010 grouping: all 15 published AGI groups are shown. “Under” means the upper endpoint is excluded. “No adjusted gross income” is the IRS label; do not read it as proof of no income or no retirement assets.
- Precision: calculations start from published thousands, not rounded chart labels. Growth = (2010 ÷ 2009 − 1) × 100. A mean = converted thousands × 1,000 ÷ taxpayers; a dollar share = group amount ÷ the Table 2 total.
- Rounding and uncertainty: IRS estimates have sampling and nonsampling limitations. These selected cells have no small-sample asterisk, but that is not proof of exactness or statistical significance. We do not calculate confidence intervals. IRS warns that rounded details may not sum to totals; the selected 2010 Table 2 groups do sum to its published totals.
Precision check: why two IRS totals differ by $1,000
The 2010 Table 2 workbook reports 64,767,828 in thousands; Table 1 in the Fall 2013 bulletin reports 64,767,827. We retain Table 2’s total, consistent with the AGI breakdown. Similarly, our 2009 Table 2 total is 6,844,696 in thousands. This gives 846.2484% growth, rounded to 846%. The tiny cross-table difference does not change that rounded finding.
Some older Table 2 conversion footnotes still refer to income restrictions for Roth contributions. We do not use that legacy wording as legal guidance: the historical law and Publication 590 establish the conversion rules and their 2010 change.
Download the verified tables
Annual conversions and contributions CSV · 2010 AGI groups CSV
Both downloads include original-source URLs, source units and calculated columns. This revision adds source-precision columns; automated users should match columns by name. RothIRAHub’s original analysis and presentation are available under CC BY 4.0: credit RothIRAHub, link to this study and indicate changes. Underlying U.S. government data remain public domain; our attribution request does not restrict their reuse.
What to take away
The historical surge is real. It shows a sharp change in aggregate Roth conversion activity around 2010, not how many people used a particular strategy or whether a conversion would help you. For decision-making context, read the conversion guide, backdoor Roth explanation and pro-rata rule guide.
Corrections and updates
October 29, 2026 · Factual correction
Corrected 847% growth to about 846%; the old $100,000 eligibility boundary; AGI-versus-MAGI and taxpayer-versus-filer descriptions; and claims that these tables identify backdoor or mega-backdoor users. Limited historical comparisons to 2007–2014, removed unsupported permanent-trend and “typical saver” claims, and rebuilt amounts and averages from the IRS tables’ original published precision. Clarified the 2010 income-inclusion option, sampling limits and a small cross-table rounding difference. The title now identifies this as a historical conversion study; the original address remains unchanged.
October 29, 2026 · Presentation clarification
Added complete accessible tables, source-precision download columns and a clearer explanation of the study’s limits. Original publication date: May 27, 2026.