Pension Holders Face Tax Torpedo as RMDs Push 85% of Benefits Taxable

Pension holders face a compounding tax burden as retirement income collides with Social Security taxation and Medicare surcharges — but strategic Roth conversions can defuse the bomb.

Pension holders face a compounding tax burden as retirement income pushes up to 85 percent of Social Security benefits into taxable territory, with 655,000 Americans holding seven-figure accounts at risk.

"Pensions push your income higher — and that's without factoring in Social Security income and required minimum distributions," said the founder and CEO of Peak Retirement Planning, a certified financial planner.

The Social Security tax torpedo triggers when combined income exceeds $34,000 for single filers or $44,000 for joint filers, making up to 85 percent of benefits taxable. Medicare IRMAA surcharges kick in at $109,000 in modified adjusted gross income for singles and $218,000 for joint filers in 2026. RMDs begin at age 73, rising to 75 in 2033.

With tax rates expected to rise as the national debt grows and Social Security and Medicare face funding shortfalls, pension holders who fail to plan now could face permanently higher tax brackets in retirement. Roth conversions — paying taxes on tax-deferred assets today to reduce future RMDs — offer a window to lock in current rates.

The average American now believes $1.46 million is the "magic number" for a comfortable retirement, up from $1.26 million a year earlier, according to Northwestern Mutual's Planning & Progress Study. But for the roughly 655,000 people with seven-figure retirement accounts as of Q4 2025, according to Fidelity data cited by Morningstar, the accumulation phase is only half the battle.

The U.S. tax code is progressive at the bottom and more flexible at the top. Low- and middle-income earners benefit from protections like the Social Security income exemption below $25,000 for singles and $32,000 for joint filers. The ultra-wealthy derive income from capital gains, dividends, and business sales — the Qualified Small Business Stock exclusion alone allows up to $15 million in capital gains exclusion. But conventional millionaires who built wealth through 401(k)s and IRAs face the full brunt of the tax code.

Brookings Institution research shows wages and retirement account withdrawals account for just 15 percent and 7 percent of income for the top 0.01 percent and top 0.001 percent of households, respectively. The ultra-rich can borrow against illiquid assets at low rates, sell businesses with favorable capital gains treatment, and collect dividends and rental income that receive preferential tax treatment. Pension holders have none of those levers.

The Roth Conversion Window

The One, Big, Beautiful Bill Act offers temporary relief: taxpayers aged 65 and older may claim an additional $6,000 deduction for tax years 2025 through 2028, or $12,000 for married couples, phasing out above $75,000 MAGI for singles and $150,000 for joint filers. But this relief expires after 2028.

For pension holders, the window to act is now. Retiring early and delaying Social Security creates a gap period — retire at 60, claim at 70, and you have a decade to draw down or convert tax-deferred assets at potentially lower rates. Delayed retirement credits add up to 8 percent per year after full retirement age, boosting eventual payouts.

The 2026 contribution limits allow workers to put up to $24,500 into a 401(k), plus $8,000 catch-up for those 50 and older and $11,250 for ages 60 to 63. Building a mix of traditional and Roth savings provides flexibility over where retirement income comes from — and how much goes to the IRS.

A $5,000-per-month pension, under specific calculations, could be worth nearly $1 million if the recipient lives to at least 70, according to Peak Retirement Planning. That makes proactive tax planning not just prudent but potentially worth six figures in avoided taxes.

The last time tax rates were this low was the Tax Cuts and Jobs Act of 2017, which set the current brackets through 2025. With the national debt exceeding $36 trillion and entitlement programs facing funding gaps, the current rate environment is widely viewed as a temporary window. Pension holders who convert now lock in today's brackets rather than gambling on what Congress does next.

This article is for informational purposes only and does not constitute investment advice.