The Average 73-Year-Old’s $431,834 401(k) Triggers a $16,296 RMD, Most Don’t See It Coming

David Beren

Updated Tue, September 22, 2026 at 11:21 PM UTC

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Quick Read

At 73, the IRS divides your prior year-end 401(k) balance by 26.5, turning the average $432,000 balance into a mandatory $16,296 taxable withdrawal.
Most retirees hold the median $96,000, not the average, meaning a far smaller RMD. Even so, the same tax rules and bracket risks still apply.
Qualified charitable distributions (up to $111,000 in 2026) and pre-73 Roth conversions are the two most effective tools to reduce RMD tax exposure.
Read More: Avoid these 13 retirement mistakes before they derail your future (sponsor)

At age 73, the IRS stops letting retirement savers defer taxes on their 401(k) balances. Required minimum distributions kick in, and the nest egg starts generating a tax bill whether the retiree needs the cash or not. For the typical American in their 70s, that first RMD lands on top of Social Security in a way that often pushes total income into a higher bracket, and its size catches most people off guard. This article walks through what the average balance actually looks like, how the RMD is calculated, and why the resulting tax bill so often exceeds expectations.

What a 73-Year-Old Actually Has Saved

According to Empower's analysis of anonymized 401(k) data through January 2026, the average 401(k) balance for Americans in their 70s is $431,834, while the median sits at $95,931. The gap between those two figures tells the real story. If ten retirees each have roughly $95,000 saved and one walks in with $3.5 million, the median stays at $95,000 while the average leaps toward $400,000. That is roughly the shape of the 70-something 401(k) landscape: a small group of very large balances pulls the mean far above what most retirees actually hold.

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Fidelity's data reinforces that dynamic on the plan tenure side. Among the more than 5.5 million workers who have been in the same 401(k) plan for at least five straight years, the average balance reached $304,200 at the end of 2025, a 16% increase from the prior year. Fidelity's broader Q2 2026 analysis, covering 25.8 million 401(k) accounts, put the overall average at $155,800, up 10.5% on the quarter and 13.1% from a year earlier, as a rally in technology and semiconductor stocks lifted balances across the board. Vanguard's 2025 participant data, published in its 2026 "How America Saves" report, shows an average balance of $167,970 and a median of $44,115. The spread across all three data sets is a reminder that population-wide averages depend heavily on which slice of savers is being measured.

How the $16,296 RMD Number Comes Out

The IRS uses the Uniform Lifetime Table to calculate required minimum distributions. At age 73, the applicable divisor is 26.5. A retiree divides their prior year-end 401(k) balance by that number to arrive at the current-year RMD.

Applied to the average 70-something 401(k) balance, the arithmetic is $431,834 divided by 26.5, producing a distribution of roughly $16,296. That full amount must be withdrawn before December 31 and counts as ordinary income on the federal return. A retiree sitting at the median balance faces a much smaller distribution, around $3,620, but the same tax mechanics apply either way.

Why the Tax Hit Surprises People

Three forces converge at age 73 that most savers never model in advance, and each one compounds the others.

The RMD is mandatory, and its size is fixed regardless of what the retiree actually spends. The one narrow exception is a current employer's 401(k) for someone still working past 72. For everyone else, the distribution must be taken on schedule or a penalty applies. There is no opt-out.

The distribution stacks on top of Social Security. The 2026 cost-of-living adjustment came in at 2.8%, lifting the average retired worker's monthly benefit from $2,015 to roughly $2,071. Adding a $16,296 RMD to that check can push up to 85% of Social Security benefits into the taxable zone, a threshold that many retirees do not realize exists until they see the tax form.

The cost squeeze runs in both directions. The standard Medicare Part B premium rose to $202.90 a month in 2026, a $17.90 increase from the prior year. That deduction comes directly out of the Social Security check, so the net increase a retiree actually receives in hand is smaller than the headline 2.8% COLA suggests. Meanwhile, safe parking of the RMD withdrawal offers little insulation: the FDIC national average yield on 12-month CDs was 1.71% as of August 2026. Any interest earned on a redeposited RMD adds to taxable income the following year, compounding the bracket problem rather than solving it.

Rising household costs tighten the squeeze further. Average annual household expenditures reached $78,535 in 2024, up from $72,973 in 2022. For a 73-year-old whose highest fixed costs are healthcare and housing, an RMD adds taxable income without adding real purchasing power.

What Can Actually Change the Number

The account balance and the IRS table fix the RMD itself. The tax treatment is more flexible, and 2026 offers a few reasons to pay close attention to the options.

Retirees can direct up to $111,000 in 2026 through a qualified charitable distribution, sending the RMD straight from the IRA to a 501(c)(3). The transfer counts toward the RMD while staying off the taxable income line entirely. The strategy carries extra weight in 2026 because the One Big Beautiful Bill Act introduced new limits on itemized charitable deductions, making the QCD's direct income exclusion more valuable than a standard deduction for many retirees.

Roth conversions before age 73 shrink the traditional balance that RMDs are calculated against. Every dollar converted in the 60s reduces the size of the required withdrawal at 73, though the conversion itself is taxed in the year it happens.

Delaying the first RMD until April 1 of the year after turning 73 is allowed under the rules, but it forces two distributions into the same tax year and typically creates a larger bracket problem than it solves. The $16,296 figure is what the arithmetic produces for the average 70-something 401(k) balance. The tax bill it triggers is the part most retirees do not see coming until the 1099-R arrives in January.

Editor's note: This article updates the Vanguard participant average and median 401(k) balances to $167,970 and $44,115 respectively, reflecting Vanguard's 2026 "How America Saves" report. The FDIC national average 12-month CD yield has been updated to 1.71% as of August 2026, the average Social Security monthly benefit has been updated to approximately $2,071 following the 2.8% 2026 COLA, and Fidelity's Q2 2026 overall 401(k) average of $155,800 has been added. New context on the One Big Beautiful Bill Act's effect on QCD strategy and the 2026 Medicare Part B premium increase have also been incorporated.