# Selling S&P 500 Fund Pushes Retiree into Higher Medicare Premiums

> A 68-year-old sells his 1996 S&P 500 fund for $310,000 gain, triggering higher Medicare premiums in 2028.
- Title: Selling S&P 500 Fund Pushes Retiree into Higher Medicare…
- Summary: A 68-year-old sells his 1996 S&P 500 fund for $310,000 gain, triggering higher Medicare premiums in 2028.
- Keywords: s&p 500, medicare premiums, capital gains tax, retiree, taxable brokerage account, irmaa, magni, 24/7 Wall St.
- Source: 24/7 Wall St. — https://247wallst.com/personal-finance/2026/11/04/at-68-he-will-sell-the-sp-500-fund-he-bought-in-1996-to-move-into-bonds-the-310000-gain-will-push-him-into-a-higher-medicare-premium-bracket-in-2028
- Author: Gerelyn Terzo
- Published: 2026-11-05T01:05:04+00:00
- Read time: 1 min
- Topics: s&p 500, medicare premiums, capital gains tax, retiree, taxable brokerage account, irmaa, magni
## Selling S&P 500 Fund
A 68-year-old sells an S&P 500 index fund he bought in 1996 to move into bonds.
## Capital Gains Windfall
The sale locks in a $310,000 gain that pushes him into a higher Medicare premium bracket in 2028.
## Medicare Income Surcharge
IRMAA reaches about 8% of Part B enrollees, with single filers under $109,000 paying $202.90 monthly.
## MAGI Impact
The gain raises his MAGI to $390,000, landing in the single bracket over $205,000 up to $500,000.
## Premium Increase
Part B premiums jump to $649.20 monthly, including a $446.30 surcharge, with Part D adding $83.30.
## Tax Implications
Selling in stages can backfire, with single filers above $200,000 owing a 3.8% net investment income tax.
## Selling Strategy
Rebalance inside retirement accounts first, pull every tax lot, and pick the tax year on purpose.
## Key takeaway

A retiree selling an S&P 500 fund he bought in 1996 faces higher Medicare premiums in 2028 due to a $310,000 capital gain.