The standard Medicare Part B premium, which most beneficiaries have deducted straight from their Social Security checks, is projected to rise to about $209.50 a month in 2027. That is an estimate drawn from the Medicare trustees’ own numbers, not the official rate — that lands in November — but it gives retirees a realistic figure to fold into next year’s budget. At roughly a 3.25 percent increase over the 2026 premium, the projected rise is smaller in percentage terms than the raise Social Security is expected to deliver, so it should not swallow the cost-of-living adjustment whole.
Where the $209.50 projection comes from
The number traces to the annual Medicare Trustees Report, which projects program costs years ahead. Reporting on those projections, Kiplinger’s summary of the 2027 Part B and IRMAA outlook puts the standard premium rising from $202.90 in 2026 to about $209.50 in 2027 — an increase of roughly $6.60 a month, or about 3.25 percent. The trustees’ figure is a forecast that the Centers for Medicare and Medicaid Services refines before setting the actual premium each fall.
Part B covers doctor visits, outpatient care, lab work, and durable medical equipment. The standard premium is what most beneficiaries pay, though higher-income enrollees pay more through income-related surcharges, and lower-income enrollees can have the premium paid for them through assistance programs. The official 2027 rate is typically announced in November, alongside the year’s Part B deductible.
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Why it should not eat the whole raise
Retirees hear every year that the Part B increase will devour their Social Security COLA, and some years it comes close. For 2027, the math looks more favorable. Social Security’s cost-of-living adjustment for 2027 is being estimated in the range of roughly 3.5 percent, based on this summer’s inflation data, and the official COLA is announced in October. A projected Part B increase near 3.25 percent applied to a $202.90 premium is a smaller dollar bite than a 3.5 percent raise applied to a typical benefit, so most beneficiaries should keep a net gain.
The exact outcome depends on your own numbers. Because Part B is deducted from the Social Security check, the net change is your dollar COLA minus the dollar premium increase. A retiree with a below-average benefit will feel the premium increase more, since the same dollar rise is a larger share of a smaller check, but the projected figures still point to a positive net for the typical beneficiary.
Higher earners and the surcharge brackets
If your income is above certain thresholds, you pay an Income-Related Monthly Adjustment Amount on top of the standard premium. These surcharges are tiered, and the brackets are indexed, so a retiree whose income crossed a threshold — sometimes because of a one-time event like a large retirement-account withdrawal or a home sale — can see a much larger Part B bill. CMS bases the surcharge on the tax return from two years earlier, so 2027 surcharges generally reflect 2025 income.
If a one-time income spike pushed you into a higher bracket, you can ask Social Security to reconsider using a life-changing event form when the increase stems from retirement, the death of a spouse, or a similar change. It is worth checking, because the surcharge brackets can add hundreds of dollars a month for those just over a line.
What to do before the official rate
Treat $209.50 as a planning estimate and confirm the real figure when CMS announces it in November. You can review current premiums and what Part B covers at Medicare’s official page on costs. If the premium strains your budget, check whether you qualify for a Medicare Savings Program, which can pay the Part B premium for eligible lower-income beneficiaries — a benefit many who qualify never claim. And when both the COLA and the premium are finalized this fall, do the simple subtraction on your own numbers to see your true net change for 2027.
What drives the premium, and why projections can miss
The standard Part B premium is set each year to cover about a quarter of the program’s expected costs, so it moves with what Medicare spends on physician services, outpatient care, and, increasingly, expensive new drugs administered in clinics. A projection made months ahead can prove too low or too high once actual spending trends and any policy changes are factored in, which is why the trustees’ estimate is a planning figure rather than the final rate. In some past years the actual premium came in below a projection; in others it rose more than expected because of a costly new treatment.
For a household, the takeaway is to budget with the estimate but confirm with the announcement. When CMS publishes the official 2027 premium and deductible in the fall, check it against your own Social Security COLA notice to see the real net change to your monthly deposit. If the premium is a strain, it is worth checking eligibility for a Medicare Savings Program, which can pay the Part B premium for qualifying lower-income beneficiaries, and for the separate Extra Help program on the drug side. Both are widely under-claimed, and details on current costs are kept up to date at Medicare’s official costs page.
This article was produced with AI assistance and reviewed by a human editor. Figures are linked to their primary sources; where a claim could not be verified from the public record, we say so.
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