Medicare Part B premium for 2027
The standard premium almost everyone pays — what it is expected to be, how it changed, and what it does to your Social Security raise.
Your raise, after Part B
Social Security checks go up 3.6% in 2027. On an average retired worker's benefit of roughly $2,000 a month, that is about $72 more a month; the standard Part B premium takes back about $6.60 of it at the projected figure. This is one of the gentler years: the premium's percentage rise is slightly smaller than the COLA. If you pay IRMAA, your premium rise can be larger — check your tier in the calculator.
The premium by income bracket
Most people pay the standard amount. If your 2025 income crossed $112,000 (single) or $224,000 (joint), you pay a higher, income-related amount:
| Bracket | 2025 income (MAGI) | Part B / month | Part D add-on | B + D / month |
|---|---|---|---|---|
| Standard (25% of cost) | $112,000 or less | $209.50 | $0 | $209.50 |
| Tier 1 (35% of cost) | More than $112,000, up to $141,000 or $142,000* | $293.30 | +$15.40 | $308.70 |
| Tier 2 (50% of cost) | More than $141,000 or $142,000*, up to $176,000 or $177,000* | $419.00 | +$39.70 | $458.70 |
| Tier 3 (65% of cost) | More than $176,000 or $177,000*, up to $211,000 or $212,000* | $544.70 | +$64.00 | $608.70 |
| Tier 4 (80% of cost) | More than $211,000 or $212,000*, up to $499,999 | $670.40 | +$88.30 | $758.70 |
| Tier 5 (85% of cost) | $500,000 or more | $712.30 | +$96.40 | $808.70 |
Single filers. Full tables, the joint schedule, and the married-filing-separately rules are on the 2027 IRMAA brackets page.
Common questions
What is the standard Medicare Part B premium for 2027?
It is projected at $209.50 a month, from the 2026 Medicare Trustees Report — up $6.60 from $202.90 in 2026. CMS publishes the official figure in the fall; in recent years it has landed between late September and mid-November.
What is the Part B deductible in 2027?
Projected at $292, up from $283 in 2026 (Trustees' projection, not yet official).
Why does Part B eat my Social Security raise?
Social Security benefits rise 3.6% in 2027 (announced October 14, 2026). The standard Part B premium is projected to rise about 3.3% — slightly less than the COLA — so most people keep most of the raise this year. A "hold harmless" rule also stops your net Social Security check from falling because of a Part B increase, for most long-term enrollees.
Do higher earners pay the same standard premium?
No. Above $112,000 of 2025 income (single) the IRMAA surcharges raise the Part B premium through five tiers, up to $712.30 a month. See the 2027 IRMAA brackets.