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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →U.S. individual retirement accounts (IRAs) held an estimated $19.9 trillion at June 30, 2026, compared with $10.8 trillion in 401(k) plans, according to the Investment Company Institute (ICI). That $9.1 trillion gap makes IRA assets a consequential retirement statistic—but it does not mean IRAs have replaced workplace plans or that American households are financially prepared for retirement.
How much money is in IRAs compared with 401(k)s?
ICI’s quarterly estimate, published September 17, 2026, puts U.S. IRA assets at $19.9 trillion and 401(k) assets at $10.8 trillion at the end of the second quarter of 2026. The difference is $9.1 trillion. These are end-of-period asset totals, not counts of accounts, participation rates, or measures of what a typical saver has accumulated. ICI’s quarterly retirement market data also show $15.0 trillion in all employer-based defined-contribution plans in that quarter; 401(k)s are one part of that broader category.
The date matters: ICI says it revised previously published IRA estimates after incorporating newly available IRS tabulations. The current comparison should therefore be read as the estimate available in its September 2026 release, not as a timeless or final measurement.
Why are IRA assets bigger than 401(k) assets?
The categories describe different kinds of accounts. A 401(k) is an employer-based defined-contribution plan. An IRA is held by an individual. People may contribute to an IRA directly, but assets can also move from a workplace plan into an IRA when someone changes jobs or retires. As a result, the IRA total includes some savings that accumulated in employer plans before being transferred.
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Rollovers are a meaningful connection, but they do not explain every IRA dollar or every change in IRA assets. Kiplinger, citing ICI survey findings, reported that 59% of traditional IRA-owning households said their traditional IRAs held assets rolled over from employer-sponsored plans in the mid-2024 survey period. That is a share of households reporting rollover assets—not the share of all IRA assets that came from rollovers. Kiplinger’s account of the ICI finding provides that survey context.
What happens to a 401(k) when you leave a job?
A former employee’s workplace savings may remain in the employer plan or, depending on the plan and circumstances, be moved to another eligible retirement account. A rollover from a 401(k) to an IRA is one route by which assets shift between the categories in the headline comparison. The account-level decision is separate from the national totals: a large aggregate IRA pool does not itself show that any particular rollover is right for you.
Before acting, check the former employer plan’s rules and compare the available choices, including fees, investment options, withdrawal rules, and any tax consequences. The cited market statistics do not establish which choice is best for an individual. A rollover may also be only one of several options; do not assume that leaving a job automatically transfers the money to an IRA.
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Does having a retirement account mean you are on track?
No. Aggregate assets show the scale of savings in account categories, not whether households can afford the retirement they want. In the Federal Reserve Board’s 2025 survey, published in 2026, 35% of non-retirees said their retirement savings were on track. The Fed notes that respondents were not given a particular asset or income target for making that judgment, so the result is self-assessed rather than a standardized test of retirement adequacy. The same report found that 61% of adults had a tax-preferred retirement account and 29% had an employer defined-benefit pension; account ownership and pension coverage are different measures from readiness. The Federal Reserve’s report explains the survey findings.
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For an individual, a more useful assessment starts with expected retirement income and spending, not the national balance-sheet comparison. Consider projected Social Security benefits, workplace-plan and IRA savings, pensions if applicable, other income, and the timing and cost of retirement. No single account balance or ownership statistic can answer whether those resources will be enough.
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How do IRAs and 401(k)s fit into retirement income?
Retirement income is not limited to IRA and 401(k) assets. ICI describes Social Security, employer plans, IRAs, and other sources as complementary parts of the U.S. retirement system. Its 2025 report says ICI research based on tax data found that typical 72-year-olds replaced more than 90% of their average inflation-adjusted spendable income from their mid-to-late 50s. That is a population-level research finding, not an individual forecast or a guarantee of a particular person’s income replacement. ICI’s 2025 report describes the analysis and its broader retirement-income framing.
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