2027 Social Security & Medicare ALERT: What You’ll Actually Keep

Social Security benefits are projected to increase by 3.5% to 3.6% in 2027, potentially adding an extra $73 to $75 per month for an average worker. However, the actual amount beneficiaries get to keep will be affected by rising Medicare Part B premiums, shifting prescription drug costs, and potential Income Related Monthly Adjustment Amounts (IRMAA) for high-income retirees. The 2027 numbers are still projections and not yet finalized. The Social Security cost of living adjustment (COLA) is expected to be between 3.5% and 3.6%, with the final figure announced on October 14th. The standard Medicare Part B premium is projected to be around $29.50, and the official announcement will come later this fall. IRMAA income thresholds are projected at $112,000 for single filers and $224,000 for joint filers, with official announcements alongside Part B premiums. For prescription drug coverage (Part D), the annual deductible is confirmed at $700, and the out-of-pocket cap is confirmed at $2,400. Individual Part D premiums, formularies, and co-pays are not yet finalized but will be announced mid to late September. The national base beneficiary premium for Part D is confirmed at $41.33, which is an input for calculation and not the amount any single person pays. Social Security COLA is calculated by comparing the CPI-W from the third quarter (June, July, August) to the third quarter of the previous year. This percentage difference, rounded to the nearest tenth, becomes the adjustment. While these are projections, any final adjustments are expected to be within this range. The good news is the Social Security increase. For a $2,000 monthly benefit, a 3.5% increase is an additional $70, and 3.6% is an additional $72. For a $3,000 monthly benefit, these increases are $105 and $108, respectively. For a $4,000 monthly benefit, they are $140 and $144. The higher the starting benefit, the larger the dollar increase, as COLA is percentage-based. Importantly, you don't need to be collecting Social Security to benefit from future COLAs; they are incorporated into your benefit calculation even if you delay claiming. However, Medicare Part B premiums are also increasing. The standard Part B premium is projected to rise from $22.90 in 2026 to about $29.50 in 2027, a 3.25% increase. This means that if you receive a $75.10 Social Security increase (from a 3.6% scenario), subtracting the $6.60 Part B premium increase leaves you with $68.50. This calculation does not yet factor in Part D, IRMAA, or taxes. It's crucial to understand that Medicare doesn't "take away" the COLA; it simply absorbs some of the gross increase before it reaches your bank account. Prescription drug coverage (Part D) will see three changes in 2027. First, the maximum annual deductible will be $700, an $85 (13.8%) increase. The annual out-of-pocket cap will be $2,400, a $300 (14.3%) increase. Once this cap is met, cost-sharing drops to zero for the rest of the year. This doesn't include the premium and only applies to covered drugs. Second, there are small co-pay increases for beneficiaries on Part D low-income subsidies. Third, the temporary Part D premium stabilization demonstration ends after 2026, which may lead to more volatile changes in cost structure. While the national base beneficiary premium is confirmed at $41.33, a 6% cap on its growth only applies to this national number, not to individual plan premiums, which can increase beyond that. Beneficiaries should review their coverage during open enrollment, as the cheapest premium plan isn't always the lowest total cost. Chapter, a service that helps compare Medicare coverage based on a complete picture including prescriptions, doctors, co-pays, and realistic total cost, is recommended. Their service is free and commission-blind, ensuring neutral advice. Once final 2027 plan details are released, Chapter can help compare plans during open enrollment. IRMAA (Income Related Monthly Adjustment Amount) is an additional premium for higher-income beneficiaries. The standard Part B premium covers about 25% of program costs, with the government covering 75%. With IRMAA, higher-income beneficiaries pay a larger share. For example, Tier 1 IRMAA means paying 35% of the cost, Tier 2 pays 50%, Tier 3 pays 65%, Tier 4 pays 80%, and Tier 5 pays 85%. Part D also has an IRMAA charge, paid separately on top of the drug plan premium. Projected IRMAA numbers for 2027 show thresholds for modified adjusted gross income (MAGI): up to $112,000 for single filers and $224,000 for married filing jointly. The Part B premium is $29.50 at the baseline. The first IRMAA threshold would increase this to about $312.30 per month, the second to $468, the third to $623, the fourth to $779, and the fifth to $831 per month. These figures are per person, so married couples both on Medicare would double these amounts. For example, if a married couple's MAGI exceeds the first threshold, their combined Part B premiums and Part D IRMAA could be approximately $625 per month, plus their actual drug plan premiums. Your 2027 Medicare IRMAA is generally based on your 2025 tax return income. MAGI for IRMAA includes adjusted gross income plus tax-exempt interest, such as from municipal bonds. This means 2025 income determines 2027 IRMAA, 2026 income determines 2028 IRMAA, and 2027 income determines 2029 IRMAA. Retirees should check their 2025 returns, and those nearing retirement should manage 2026 income. IRMAA operates as a "cliff" rather than a progressive tax bracket. If your MAGI crosses a threshold by even one dollar, you are hit with the entire additional premium for that tier. For instance, a married couple filing jointly with MAGI just under $224,000 pays standard premiums (about $2,500 annually combined). If their MAGI goes over by just $1, their annual premiums jump to about $3,750, a $1,200 increase per person or $2,500 per couple. This significant impact on the cusp of thresholds highlights the importance of IRMAA planning. Several income events in retirement can trigger IRMAA: traditional IRA and 401(k) withdrawals, Roth conversions, realized capital gains, mutual fund capital gain distributions, taxable pension income, interest and dividends, tax-exempt municipal bond interest, net rental or business income, required minimum distributions (RMDs), the taxable portion of Social Security, and large year-end transactions or asset sales. Two exemptions exist: qualified Roth withdrawals generally do not count towards MAGI. Qualified charitable distributions (QCDs) can satisfy RMDs and keep that portion out of taxable income, thus not affecting MAGI. While avoiding IRMAA is often a goal, there are situations where triggering it might be beneficial. For example, a Roth conversion that saves tens or hundreds of thousands in taxes over retirement might be worth an additional $1,800 IRMAA surcharge. These decisions should be made holistically, considering the entire retirement picture, not just IRMAA in isolation. Root Financial is mentioned as a company that approaches financial planning from a holistic stance, considering Social Security timing, Roth conversions, capital gains, RMDs, taxes, and Medicare costs together. You can appeal IRMAA determinations if your income has dropped due to qualifying life-changing events, such as marriage, divorce, death of a spouse, work stoppage or reduction, loss of income-producing property, loss of pension income, or certain employer settlement payments. If your tax returns were incorrect and amended, contact the Social Security Administration directly. An action plan includes: 1. Find your MAGI on your 2025 tax return (AGI + tax-exempt interest). 2. Compare it to projected 2027 IRMAA thresholds, building in a buffer. 3. Estimate your Social Security increase, then subtract projected Part B and Part D costs. 4. Review the annual notice of change from your current Medicare plan. 5. Use 2026 income planning to prepare for 2028 IRMAA, weighing lifetime taxes. Key dates to watch: - Mid to late September: 2027 Medicare Advantage and Part D plan details released. - October 14th: September CPI-W released, providing final COLA input for Social Security. - October 15th to December 7th: Medicare annual open enrollment. - Fall of 2026: Final Part B premium and IRMAA figures announced. The main takeaway is that while a bigger Social Security check is good, Medicare premiums, prescription drug costs, and IRMAA will reduce the amount you actually keep. For some, COLA adjustments may not lead to a significant net gain but rather prevent them from falling further behind. Most of these factors can be planned for, and once official numbers are released, more precise planning can occur.