A $450,000 Traditional IRA vs. Roth IRA at Age 62: The Hidden Tax Bracket Trap

Two neighbors retire on the same day at age 62.

Both have saved exactly $450,000. Both plan to spend $50,000 a year. Both expect their money to last roughly 20 years.

Their account statements look identical.

Their retirements do not.

Retiree A has the money in a Traditional IRA.

Retiree B has the money in a Roth IRA.

That difference may be worth thousands of dollars a year—not because one retiree spends more, earns better returns, or lives more frugally, but because one account comes with an unpaid tax bill attached to it.

The number on the statement isn’t the number you can spend

A Traditional IRA is not entirely yours in the way most people imagine.

You own the account. But the government owns a future claim on nearly every dollar that comes out of it. Withdrawals are generally taxed as ordinary income.

A Roth IRA works differently. You pay the tax before the money enters the account. If the withdrawal is qualified—generally meaning you are over age 59½ and the account has met the five-year rule—the withdrawal is tax-free.

So the two neighbors may each see $450,000 on their statements.

But one has $450,000 of future purchasing power.

The other has $450,000 minus whatever the IRS eventually collects.

Under a simplified example, both retirees withdraw $50,000.

Assume they file as single, pay federal tax only, and use the 2026 standard deduction of $16,100. Retiree A would have roughly $33,900 of taxable income. Using the 10% bracket up to $12,400 and the 12% bracket above that, the federal tax would be approximately $3,820.

Retiree B withdraws the same $50,000 from the Roth IRA and owes no federal income tax on the qualified distribution.

Same withdrawal.

Same spending goal.

Different tax return.

Why the Social Security Torpedo Waits in the Wings

At 62 neither retiree is required to claim Social Security. Assume both delay until full retirement age at 67 for a larger benefit. Once benefits begin, the picture shifts. Provisional income (also called combined income) equals adjusted gross income plus tax-exempt interest plus half of Social Security benefits. Traditional IRA withdrawals feed straight into that formula. Qualified Roth withdrawals do not.

Above $34,000 in provisional income for singles and $44,000 for joint filers, up to 85% of Social Security benefits become taxable. Retiree A’s $50,000 IRA draw pushes provisional income well past those thresholds and drags the maximum share of the benefit into taxable territory. Retiree B’s $50,000 Roth draw leaves provisional income at half the benefit, which for many middle-benefit retirees keeps benefit taxation at or near zero. With the 2027 Social Security COLA tracking near 3.1%, benefits keep growing in nominal dollars, and so does the tax exposure on the Traditional side.

Age 62 to 65: A Narrow Window Worth Using

Between 62 and 65, most retirees sit in a tax valley. Wages have stopped, Social Security has not started, Medicare has not started, and required minimum distributions (RMDs, the forced withdrawals from Traditional accounts that begin in the mid-70s under current law) are years away. Taxable income can be almost anything the retiree chooses.

Retiree A can use this valley to convert Traditional dollars to Roth at controlled rates. A single filer could fill the 12% bracket up to $50,400 or step into the 22% bracket, which runs to $105,700. A joint filer has room up to $100,800 at 12% and $211,400 at 22%. Every dollar converted at 12% or 22% today is a dollar that will not inflate provisional income once Social Security begins (we sized up this window between the last paycheck and the first RMD in a free Roth guide here).

One caution on Medicare. The 2026 standard Part B premium is $202.90 per month, and income-related surcharges (IRMAA) begin only when modified adjusted gross income exceeds $109,000 single or $218,000 joint. A $450,000 balance will not trip IRMAA on its own. The surcharge risk appears only when conversions stack on top of a pension, a working spouse’s salary, or large capital gains.

What Separates Them Over Twenty Years

Retiree A pays federal income tax on nearly every dollar withdrawn for two decades and watches up to 85% of Social Security land on the tax return once benefits start. Retiree B pays no federal tax on withdrawals and keeps Social Security largely untaxed. Same spending, meaningfully different cumulative tax bill. The Roth balance is also worth more at any moment because no embedded liability sits against it. Rates matter too. The 10-year Treasury near 4.73% reflects a higher-rate environment than the last decade, and if future tax rates rise, the case for paying at today’s schedule through conversions strengthens.

Three Buckets, One Rule

Diversify across three tax buckets: taxable brokerage, tax-deferred (Traditional IRA or 401(k)), and tax-free (Roth). Holding all three gives a retiree the ability to choose which dollar to spend based on that year’s tax picture rather than being forced into ordinary income every time.

Evaluate two things first. What is your projected taxable income each year from 62 until Social Security and RMDs begin, and how much room is left in the 12% and 22% brackets to convert? The common mistake is sitting still during the tax valley and then facing a much larger bill once benefits and mandatory distributions arrive together. This is educational and not personalized advice, and state income tax can change the answer in either direction.

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