Pull $40,000 from a traditional IRA to cover living expenses and you might expect a straightforward tax bill on that amount. What catches many retirees off guard is that the withdrawal does not get taxed in isolation. It drags a portion of your Social Security into taxable territory too, turning a manageable tax situation into something far more expensive.
This scenario comes up constantly in retirement forums. A retiree on Reddit’s r/SocialSecurity thread recently asked whether IRA withdrawals count as income for Social Security purposes, clearly unaware of how the interaction works.
The Hidden Multiplier Inside the Tax Code
Consider a single retiree, age 68, receiving $2,081 per month in Social Security ($24,972 per year), who withdraws $40,000 from a traditional IRA. That monthly figure reflects the average retired worker benefit as of April 2026, according to the Social Security Administration’s monthly statistical snapshot.
The IRS uses a figure called “combined income” to determine how much of your Social Security gets taxed. That amount equals your adjusted gross income, plus any non-taxable interest, plus 50% of your Social Security benefits. In this example, that is $40,000 plus $12,486 (half of $24,972), which equals $52,486.
The thresholds that trigger Social Security taxation have not been adjusted for inflation since 1984. For a single filer, combined income above $34,000 means up to 85% of Social Security benefits become taxable. At $52,486, this retiree clears that line by a wide margin. That means 85% of $24,972, or $21,226, gets added to taxable income alongside the IRA withdrawal.
Total income before deductions comes to $61,226. For 2026, a single filer age 65 or older can claim a standard deduction of $18,150, which is the $16,100 base plus the $2,050 additional deduction for seniors. After that deduction, taxable income falls to $43,076. Applying the 2026 brackets (10% on the first $12,400, 12% on the remainder), the federal tax bill works out to roughly $4,921.
Compare that to a scenario where Social Security taxation never activates. On $40,000 of IRA income alone, taxable income after the $18,150 deduction would be $21,850, producing a tax bill of about $2,374. The difference is approximately $2,547, all from the cascade effect of the IRA withdrawal making more Social Security taxable.
Each additional dollar withdrawn from a traditional IRA does not just get taxed once. It also causes $0.85 of Social Security to become taxable, so the government is effectively taxing well over 40% of the last dollars of IRA withdrawal when both effects are counted together.
A New Senior Deduction Softens the Blow, But Only Temporarily
One meaningful piece of post-2025 tax law is worth knowing here. The One Big Beautiful Bill, signed into law on July 4, 2025, created a separate $6,000 deduction for taxpayers age 65 and older, available for tax years 2025 through 2028. The deduction applies whether the taxpayer itemizes or takes the standard deduction, and it begins phasing out for single filers with modified adjusted gross income above $75,000.
In the scenario above, the retiree’s AGI of $61,226 falls below that threshold, so the full $6,000 bonus deduction would apply on top of the $18,150 standard deduction. That would bring total deductions to $24,150, reducing taxable income to $37,076 and cutting the federal tax bill to roughly $4,195. Even with that relief, the gap between the two scenarios (with and without the Social Security tax trigger) remains substantial, around $2,200. And the bonus deduction expires after 2028, so it offers temporary relief rather than a permanent fix.
Why the Thresholds Are the Real Problem
The $25,000 and $34,000 combined income thresholds for single filers were written into law in 1984 and have never been adjusted for inflation. A typical retiree collecting around the average benefit already contributes about $12,486 of combined income from Social Security alone, before counting a single dollar of savings withdrawals. Add a modest IRA distribution, and most retirees land in taxable territory without ever expecting to.
According to U.S. News, most retirees spend less than $4,000 per month. The $40,000 annual withdrawal in this scenario is typical for someone supplementing Social Security to cover basic living expenses, and it is precisely the kind of amount that crosses the 85% taxability line.
Three Ways to Lessen the Damage
This tax situation is not inevitable. Three approaches can reduce the exposure:
- Draw from a Roth IRA instead. Roth withdrawals are not counted in combined income, which means they do not push more Social Security into taxable territory. Converting money from a traditional IRA to a Roth account before retirement is one way to sidestep this problem, since qualified Roth withdrawals are tax-free. Converting a portion of a traditional IRA in lower-income years can meaningfully reduce future tax exposure.
- Do Roth conversions before claiming Social Security. The years between retirement and age 70 are often the lowest-income years of a retiree’s life. Converting chunks of a traditional IRA to Roth during that window, while combined income is still manageable, can dramatically shrink the taxable IRA balance before Social Security starts compounding the problem.
- Mix Roth and traditional withdrawals to stay below $34,000 in combined income. A single filer who keeps combined income under $34,000 faces a maximum of 50% of Social Security being taxable rather than 85%. Blending sources of income to stay near that line can save hundreds or thousands of dollars per year.
Fixed Thresholds Mean More Retirees Will Cross the Line Each Year
Most retirees focus on whether they have enough saved to cover withdrawals, not on how each transaction interacts with Social Security taxation. That gap shows up as a surprise bill at tax time. Running a quick combined income estimate before taking a large IRA distribution can prevent a balance that feels like it came out of nowhere.
Unlike tax brackets, which adjust with inflation each year, the $25,000 and $34,000 combined income limits will remain where they are indefinitely. That means more retirees will cross them over time simply due to annual cost-of-living adjustments to Social Security benefits. The 2026 COLA of 2.8% pushed the average retired worker benefit higher, which in turn pushes more combined income into taxable territory for anyone with even modest savings withdrawals.
Every retiree’s tax picture differs depending on factors like filing status, state taxes, Medicare premiums, and other income sources. A conversation with a tax professional who understands retirement income layering can identify withdrawal sequencing strategies that manage the combined income figure and lower the federal tax bill.
Editor’s note: This article was updated to reflect 2026 tax figures, including the revised standard deduction of $18,150 for a single filer age 65 or older and the updated average Social Security retirement benefit of $2,081 per month (April 2026, SSA). The tax bill estimates in the example were recalculated accordingly, and new context on the temporary $6,000 senior bonus deduction introduced by the One Big Beautiful Bill for tax years 2025 through 2028 was added.
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