Why a Married Couple Over 65 Could Withdraw $47,500 From a 401(k) in 2026 Without Owing Federal Tax

Many retirees assume that every dollar taken from a traditional 401(k) will trigger federal tax, but for some couples in their late 60s, a combination of 2026 deductions can wipe out the bill entirely.

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Consider a married couple, both age 66, with a sizable traditional 401(k) and a straightforward plan for 2026: withdraw $47,500 to pay living costs and have no other income. With no pension, no wages and no Social Security yet, that distribution would create $0 in federal income tax under the 2026 rules.

How Three Deductions Can Offset $47,500

The first piece is the standard deduction, which is projected to be $32,200 for married couples filing jointly in 2026. The second is the extra deduction for taxpayers age 65 and older: $1,650 per person, or $3,300 total for the couple.

The third piece is new. The One Big Beautiful Bill introduced a $6,000 deduction for each eligible person for tax years 2025 through 2028. For two spouses over 65, that means another $12,000.

Put together, those three deductions total $47,500. A $47,500 401(k) withdrawal offset by $47,500 in deductions leaves no taxable income. The money was never taxed when it went in, and in this case it does not get taxed when it comes out.

What Determines Eligibility for the Senior Deduction

The additional age-65 deduction is relatively simple to claim, but the new deduction comes with several conditions:

1. Age: each spouse must turn 65 before the end of the tax year. If one spouse is still 64, the couple receives only part of the benefit.
2. Filing status: married taxpayers can claim it only on a joint return. Filing separately eliminates the deduction entirely.
3. Identification: the return must include each qualifying spouse’s Social Security number. An individual taxpayer ID number does not qualify in place of an SSN.
4. Income: each $6,000 deduction is reduced by 6% of modified adjusted gross income above $150,000 on a joint return. Large Roth conversions or capital gains can shrink the benefit.

Higher Withdrawals Can Still Be Taxed Lightly

For this couple, $47,500 is the tax-free ceiling. Couples with larger balances can still do well beyond that amount.

The 10% tax bracket extends through the first $24,800 of joint taxable income. That means a $72,300 withdrawal would still be taxed at no more than 10% on any dollar.

The 12% bracket goes up to $100,800 of taxable income. A $148,300 withdrawal would fill that bracket and still remain below the $150,000 phaseout threshold, preserving the full senior deduction. Federal tax on that amount would be about $11,600, for an effective rate of roughly 8%.

Medicare surcharges would not be an issue at that level either. The first 2026 income-related monthly adjustment amount, or IRMAA, for joint filers does not begin until income exceeds $218,000. Because IRMAA uses a two-year lookback, income in 2026 generally affects premiums in 2028, based on that year's thresholds. Any money left in the 401(k) will eventually come out through required minimum distributions, which are added on top of Social Security.

Paying 10% or 12% now may be better than paying 22% or more later, especially once benefit checks and required distributions begin. The gap between the final paycheck and the first RMD can be an especially valuable planning window.

Why Social Security Changes the Equation

The zero-tax result only works when there is no other taxable income. Social Security benefits become taxable once half of the benefits plus all other income exceed $32,000 for married couples filing jointly. In 2026, the average senior couple receives about $3,208 a month.

Six months of those payments, combined with a $47,500 withdrawal, would bring total income to $57,124, far above the $32,000 threshold. At that point, part of the Social Security benefit becomes taxable, and the deductions no longer shelter all income. Pension income, interest and part-time wages can also reduce the tax-free space. The $47,500 figure applies only to couples with no other income.

How to Make the Most of the 2026 Opportunity

1. Coordinate withdrawals with the timing of Social Security. Couples ages 65 to 70 who delay claiming benefits can often draw down pretax savings at the lowest cost, while also increasing their future monthly check.
2. Choose a target tax bracket first, then size the withdrawal or Roth conversion to fit it. Use $47,500 for zero federal tax, $72,300 to stay within 10%, or $148,300 to fill the 12% bracket while keeping the full senior deduction. State taxes may still apply.
3. Watch the deadline. The senior deduction applies only to tax years beginning before January 1, 2029, which leaves only 2027 and 2028 after 2026. Every year without a planned withdrawal is one less year to use the deduction.