In 2026, retirees who collect Social Security received an increase in their monthly benefits. The cost-of-living adjustment (COLA) for 2026 totaled 2.8%, and with the average Social Security retirement benefit now sitting at roughly $2,064 per month, that translates to about $56 in additional income each month.
That extra money matters. Since prices rise steadily because of inflation, Social Security benefits that stay flat would leave seniors falling further behind every year. The 2.8% raise for 2026 was slightly larger than the 2.5% bump retirees received in 2025, so on paper it looks encouraging. In practice, though, many retirees saw very little of it show up in their actual checks, and Medicare premiums are the reason why.
The impact was not equal across the board. Most retirees took a hit, but some faced a far steeper reduction than others. Here is why Medicare consumed such a large portion of those Social Security gains, and what options remain for fighting back.
Why rising Medicare Part B premiums are making your Social Security COLAs disappear
For the majority of retirees covered by Medicare who also collect Social Security, premiums are deducted directly from their benefit payments. That means any significant jump in Medicare costs immediately shrinks the net gain from a COLA increase.
In 2026, the standard monthly Medicare Part B premium for outpatient coverage rose from $185.00 to $202.90, a $17.90 increase that amounts to just under 10% year over year. Annual Part B costs now exceed $2,400 for a standard enrollee. Against a typical $56 monthly COLA gain, that $17.90 premium increase eats up nearly one third of the raise before a retiree spends a cent on anything else. The Part B annual deductible also climbed, from $257 in 2025 to $283 in 2026, adding another layer of out-of-pocket pressure.
There is a floor built into the system. The hold harmless provision prevents Medicare premium increases from exceeding the dollar amount of a retiree’s COLA, so a beneficiary’s net Social Security check cannot actually shrink because Part B got more expensive. Losing the entire raise to a premium spike is possible, but a net reduction in benefits is not, for those covered by this protection.
There is a broader problem lurking behind this year’s numbers, too. The Senior Citizens League’s 2026 Loss of Buying Power report found that Social Security benefits have lost approximately 13.7% of their purchasing power since 2010. The COLA formula is pegged to the Consumer Price Index for Urban Wage Earners (CPI-W), which tracks spending by working-age households rather than retirees. Because healthcare weighs heavily in a senior’s budget but lightly in the CPI-W, the adjustments routinely fall short of what seniors actually experience. The 2.8% raise helps, but it continues a long-running pattern of modest gains being quickly absorbed by real-world costs.
Some retirees face an even steeper climb because of Income-Related Monthly Adjustment Amounts, or IRMAA. If your Modified Adjusted Gross Income (MAGI) cleared the IRMAA threshold, your premiums jumped well above the standard rate. The income that counts is from two years ago, so in 2026, the SSA looks at your 2024 tax return. A single filer whose 2024 MAGI exceeded $109,000, or a married couple who filed jointly and exceeded $218,000, sees Part B premiums of at least $284.10 per month in 2026, with costs continuing upward through five income tiers, reaching $689.90 at the highest bracket.
IRMAA operates as a cliff, not a gradual phase-in. Exceeding a bracket threshold by even one dollar triggers the full surcharge for that entire tier. Given that the income used to set 2026 premiums reflects what was earned in 2024, retirees who had a one-time income spike two years ago, from a home sale, a large IRA distribution, or a Roth conversion, can find themselves paying hundreds of dollars more each month for coverage that was designed around a financial picture that no longer exists.
How you can fight back against big Medicare increases
If you are subject to the standard $17.90 Part B increase and nothing more, there is no mechanism to appeal it. The standard premium applies universally, and the hold harmless provision already limits how much it can cut into your COLA. For most retirees, this is simply the new baseline cost of outpatient Medicare coverage.
The picture is different for those paying IRMAA surcharges. If your income has fallen significantly because of a qualifying life event since the 2024 tax year Medicare is using to set your premium, you can file Form SSA-44 to request a revised determination based on more recent income. An appeal may succeed if any of the following events reduced your income substantially after 2024:
- Marriage
- Divorce
- The death of your spouse
- A work stoppage
- A work reduction
- The loss of income-producing property
- Loss of pension income
- An employer settlement payout
Filing an appeal in these circumstances is worth prioritizing. Medicare premiums are already rising for everyone at the standard rate. Paying an IRMAA surcharge on top of that, based on a tax return that no longer reflects your actual financial situation, compounds an already difficult squeeze.
Looking ahead, the Senior Citizens League currently projects a 3.8% COLA for 2027, which would be a modest improvement over this year’s 2.8%. Whether that larger adjustment translates into meaningful net income again depends on what happens to Part B premiums next year, a figure that typically is not finalized until November.
For retirees who cannot reduce their Medicare costs through an appeal, the most practical path is working with a financial advisor to build a budget around the actual net Social Security income received after premium deductions, rather than the gross benefit figure. Knowing the real number, not the headline COLA percentage, is the starting point for making the rest of a retirement income plan hold together.
Editor’s note: This update refreshes the average 2026 Social Security retirement benefit to roughly $2,064 per month (up from $2,008 in 2025), adds the 2026 Part B annual deductible increase to $283, incorporates the Senior Citizens League’s 2026 finding that Social Security benefits have lost 13.7% of purchasing power since 2010, corrects the article’s “Marrige” typo to “Marriage,” and adds TSCL’s current 3.8% COLA projection for 2027.
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