Social Security Retirees Face a Hidden Tax on Their 2026 COLA. Here's the Math

The Social Security Administration set a 2.8% cost-of-living adjustment for 2026, raising the average monthly benefit from about $2,015 in 2025 to about $2,071 in 2026. The average increase is $56 per month, but the Medicare Part B premium is deducted from Social Security checks, changing what arrives in bank accounts. The standard Medicare Part B premium rises to $202.90 in 2026 from $185.00 in 2025, an increase of $17.90 per month. Subtracting the premium increase from the COLA leaves a typical net gain of about $38.10 per month. The Medicare premium increase consumes a larger share of the COLA for smaller benefits, leaving lower net increases than for higher benefits.

"The Social Security Administration announced a 2.8% COLA for 2026, which lifted the average retired worker check from about $2,015 a month in 2025 to roughly $2,071 in 2026. That is a $56 raise, the biggest dollar bump on record for the average beneficiary."

"Most retirees on Social Security have their Medicare Part B premium pulled directly from their monthly benefit. What matters is the figure that lands in the bank account after that deduction. For 2026, the standard Medicare Part B premium climbed to $202.90 a month, up from $185.00 in 2025. That is a $17.90 monthly increase, or about $215 over the year. Subtract that from the $56 COLA raise, and the typical retiree is left with a net increase of $38.10 a month."

"The hit lands harder the smaller your benefit: Lower benefit ($1,500/month): A 2.8% COLA adds about $42 a month. The Medicare premium hike of $17.90 swallows roughly 43% of it. Net raise: about $24. Average benefit ($2,015/month): The $56 raise nets out to $38.10 after Medicare. About a third of the bump is gone before it arrives. Maximum benefit ($5,181/month at age 70): A 2.8% COLA adds about $145 a month. The same $17.90 Medicare hike consumes only about 12% of the raise, leaving roughly $127 net."

"The Part B premium is a flat dollar amount, not a percentage. A fixed cost charged against a percentage-based raise is regressive by design. Retirees with smaller checks lose a bigger share of their COLA every year thi"

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