A Cost-of-Living Adjustment (COLA) is an annual increase in Social Security benefits designed to offset inflation as measured by the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). For 2026, the Social Security COLA is set at 2.8%, but the net amount you actually receive after Medicare Part B premium deductions tells a different story than the headline number. Understanding the relationship between the social security cola 2026 medicare premium deduction is essential for anyone relying on these benefits to cover living expenses.
How the 2026 COLA Translates to Your Gross Benefit Increase
The Social Security COLA for 2026 is 2.8%, but the net amount you actually receive after Medicare Part B premium deductions tells a different story than the headline number. Understanding the relationship between the social security cola 2026 medicare premium deduction is essential for anyone relying on these benefits to cover living expenses.
The Social Security Administration announced a 2.8% Cost-of-Living Adjustment (COLA) for 2026, effective with December 2025 benefits paid in January 2026.1 For the average retired worker receiving approximately $1,927 per month, this adds about $54 to the gross monthly benefit.1
This gross increase is calculated before any deductions. The COLA applies to your Primary Insurance Amount (PIA), which is the benefit you are entitled to at full retirement age. If you claimed benefits early or delayed them, the percentage increase still applies to your current benefit amount.
Consider a hypothetical retiree named Sarah who receives the average benefit of $1,927 per month. Her gross benefit rises to $1,981 per month in 2026 — a $54 increase. That $54 is the number most news headlines report, but it is not what Sarah will see deposited into her bank account.
The COLA is designed to keep pace with inflation as measured by the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). However, healthcare costs — specifically Medicare premiums — have historically risen faster than general inflation, creating a gap between the COLA and actual purchasing power.
Social Security COLA 2026: What the 2.5% Increase Means for Your Net Benefit
The 2.8% COLA for 2026 is actually higher than the 2.5% figure some preliminary estimates suggested earlier in 2025.2 But the net benefit after Medicare deductions is where the real story lies.
Medicare Part B premiums are deducted directly from Social Security benefits for the approximately 75 million Americans who elect Part B coverage.1 The standard Part B premium rises from $185 per month in 2025 to $202.90 per month in 2026 — a $17.90 increase.3
For a beneficiary at the average benefit level, the net monthly increase after the Part B premium deduction is approximately $36.10.4 That means the Medicare premium increase consumes roughly one-third of the total COLA increase before the beneficiary sees a single dollar.
| Item | 2025 | 2026 | Change |
|---|---|---|---|
| Average monthly Social Security benefit | $1,927 | $1,981 | +$54 |
| Medicare Part B standard premium | $185.00 | $202.90 | +$17.90 |
| Net monthly benefit after Part B | $1,742 | $1,778.10 | +$36.10 |
This $36.10 net increase must cover all other rising costs — housing, food, transportation, and prescription drugs. When Part D prescription drug plan premiums also increase, the net gain shrinks further.
How Medicare Part B Premiums Will Reduce Your 2026 COLA
Medicare Part B premiums are rising by 9.7% in 2026, from $185 to $202.90 per month.3 This rate of increase far exceeds the 2.8% COLA, creating a structural problem for beneficiaries.
The Part B premium increase of $17.90 per month represents approximately 33% of the $54 COLA increase.5 For beneficiaries who also pay Part D premiums, the net gain is even smaller. The average Part D premium is projected to increase modestly in 2026, though exact figures vary by plan.
Medicare premiums as a share of annual Social Security benefits have been rising steadily. Research from the Center for Retirement Research at Boston College shows that Part B premiums will consume more than 25% of the 2026 COLA increase.2 This ratio has grown over the past decade as healthcare costs have outpaced general inflation.
For a beneficiary receiving the average benefit, the annual cost of Part B premiums in 2026 will be $2,434.80 — up from $2,220 in 2025.5 That is a $214.80 annual increase, compared to a $648 annual COLA increase. The premium increase alone consumes nearly one-third of the total COLA.
IRMAA Surcharges in 2026: Income Thresholds and Your Real Take-Home
The Income-Related Monthly Adjustment Amount (IRMAA) adds surcharges on top of the standard Part B premium for beneficiaries with higher incomes. These surcharges are based on your modified adjusted gross income (MAGI) from two years prior — so 2026 IRMAA is determined by your 2024 tax return.
For 2026, IRMAA surcharges range from $74 to $395.60 per month on top of the standard $202.90 Part B premium.6 The income thresholds determine which bracket you fall into.
| 2024 MAGI (Single) | 2024 MAGI (Married Filing Jointly) | Part B Monthly Premium (2026) |
|---|---|---|
| $106,000 or less | $212,000 or less | $202.90 |
| $106,001 - $133,000 | $212,001 - $266,000 | $276.90 |
| $133,001 - $167,000 | $266,001 - $334,000 | $350.90 |
| $167,001 - $200,000 | $334,001 - $400,000 | $424.90 |
| $200,001 - $500,000 | $400,001 - $750,000 | $498.90 |
| Over $500,000 | Over $750,000 | $598.50 |
A single beneficiary with a 2024 MAGI of $120,000 pays $276.90 per month for Part B in 2026 — $74 more than the standard premium1. That extra $888 per year in surcharges can wipe out the entire COLA increase and then some.
If your income dropped in 2025 or 2026 due to retirement, divorce, or loss of income, you can file an IRMAA appeal using Form SSA-44. The Social Security Administration will review your current circumstances and may reduce or eliminate the surcharge.
The Medicare Premium Cliff: When a Small Income Jump Costs Thousands
The IRMAA structure creates sharp premium cliffs at each income threshold. Exceeding a threshold by even one dollar triggers the full surcharge for the entire bracket.
Consider a hypothetical married couple filing jointly with a 2024 MAGI of $212,001 — just one dollar above the first IRMAA threshold. Their combined Part B premium jumps from $202.90 per person to $276.90 per person1. That one dollar of extra income costs them an additional $148 per month, or $1,776 per year, in combined Part B premiums3.
This cliff effect is particularly dangerous for retirees who take a one-time distribution from a retirement account. A single Roth conversion or IRA withdrawal can push MAGI above a threshold, triggering surcharges for the entire year.
The Part D IRMAA surcharge adds another layer. High-income beneficiaries also pay extra for Part D coverage, with surcharges ranging from roughly $13 to $86 per month depending on income level1. These surcharges stack on top of the Part B IRMAA.
Coordinating Your 401k Withdrawals to Stay Below IRMAA Limits
Strategic withdrawal planning can help you stay within IRMAA income thresholds. The key is understanding that IRMAA looks at MAGI, which includes tax-exempt interest, tax-free municipal bond interest, and half of self-employment income.
For a single filer, keeping 2026 MAGI at or below $106,000 avoids any IRMAA surcharge in 20281. For married couples filing jointly, the threshold is $212,0001. These figures are for 2026 premiums based on 2024 income — the 2028 thresholds will likely be higher due to inflation adjustments.
Suppose a single retiree named Michael needs $115,000 in total income for 2026. He receives $30,000 from Social Security and $20,000 from a pension, leaving $65,000 to withdraw from his 401k. If he withdraws the full $65,000, his MAGI hits $115,000 — triggering the first IRMAA bracket1. If he instead withdraws $56,000, his MAGI stays at $106,000, saving $888 per year in surcharges1.
The trade-off is clear: withdrawing an extra $9,000 from the 401k costs $888 in additional Part B premiums. That is an effective 9.9% tax on that withdrawal before federal income taxes1. Coordinating withdrawals with a tax professional can identify the optimal withdrawal amount.
Spousal Benefit Strategies to Maximize Household Purchasing Power
Married couples have several options to optimize their combined Social Security and Medicare situation. Spousal benefits, survivor benefits, and coordinated claiming strategies can increase household net income while managing IRMAA exposure.
A lower-earning spouse may qualify for a spousal benefit equal to up to half of the higher-earning spouse's Primary Insurance Amount. If the lower-earning spouse's own benefit is less than half of the higher earner's benefit, Social Security pays the difference. This spousal benefit is subject to the same Medicare premium deductions.
For couples where one spouse has significantly higher lifetime earnings, delaying the higher earner's benefit until age 70 can maximize the survivor benefit. The surviving spouse receives the larger of their own benefit or the deceased spouse's benefit — so maximizing the higher benefit protects the survivor.
Consider a hypothetical couple where Jennifer earned $80,000 per year and Michael earned $40,000 per year. If Jennifer delays her benefit until 70, her monthly benefit increases by 8% per year past full retirement age. Michael can claim his own benefit at 62 and later switch to a spousal benefit when Jennifer files. This strategy maximizes household income while keeping each individual's MAGI lower for IRMAA purposes.
Late-Career Earnings: How Working Past 65 Affects Your Net Social Security
Working past age 65 affects Social Security benefits in several ways. First, additional earnings may increase your benefit if they replace lower-earning years in the Social Security benefit calculation. Second, earned income can push you into higher IRMAA brackets, increasing Medicare premiums.
The Social Security Administration recalculates your benefit automatically each year you work and pay FICA taxes. If your current earnings are higher than one of your 35 highest-earning years, your benefit increases. This recalculation happens without any action on your part.
However, working past full retirement age means you are earning income while receiving benefits. That earned income counts toward MAGI for IRMAA purposes. Consider a retiree working part-time earning, for example, $40,000 per year, combined with $25,000 in Social Security benefits and $20,000 in pension income — a MAGI of $85,000, below the single IRMAA threshold. But add a $30,000 IRA withdrawal for a home repair, and MAGI jumps to $115,000, triggering the surcharge.
The earnings test no longer applies once you reach full retirement age. Before full retirement age, Social Security withholds $1 in benefits for every $2 earned above the annual limit (for example, $22,320 in 20251). After full retirement age, there is no earnings test, and benefits are paid in full regardless of earned income.
Your Next Step
Log into your my Social Security account today and download your 2026 COLA notice when it becomes available in December 2025. Compare the gross benefit increase to the Medicare Part B premium deduction listed on the notice. If the net increase is smaller than expected, review your 2024 tax return to check whether your MAGI triggers IRMAA surcharges. If your income has dropped since 2024, prepare Form SSA-44 and file it within 60 days of receiving your IRMAA notice. For personalized withdrawal planning, schedule a consultation with a fee-only financial planner who understands Medicare coordination — the savings from avoiding one year of IRMAA surcharges can pay for the advice many times over.
Footnotes
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https://www.ssa.gov/news/press/factsheets/colafacts2026.html ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13
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https://crr.bc.edu/higher-medicare-premiums-will-eat-up-more-than-25-percent-of-the-social-security-cola/ ↩ ↩2
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https://www.cms.gov/newsroom/fact-sheets/2026-medicare-parts-b-premiums ↩ ↩2 ↩3 ↩4
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https://finance.yahoo.com/sectors/healthcare/articles/medicare-premiums-took-back-nearly-103100788.html ↩ ↩2
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https://www.cms.gov/newsroom/fact-sheets/2026-medicare-parts-b-premiums ↩ ↩2
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https://www.medicare.gov/your-medicare-costs/medicare-costs-at-a-glance/medicare-premiums ↩ ↩2