Social Security's 2027 COLA: How Much Will You Actually Keep?

Social Security just announced a 3.6% cost-of-living adjustment for 2027 — the largest raise since the 8.7% bump in 2023. Headlines are calling it the "Trump Bump," and if you're collecting benefits, it sounds like welcome news.

But before you adjust your budget, there's math worth doing. For millions of retirees, the check that actually lands in January will be smaller than that 3.6% headline suggests. Here's what's really happening — and what you can do about it.

Your Medicare Premium Gets Paid Before You Do

If you're on Medicare and collecting Social Security, your Part B premium is deducted automatically — before the deposit hits your bank account. In 2026, the standard Part B premium is $202.90 per month, up from $185 the year before. The 2027 amount hasn't been officially announced yet, but CMS typically releases it in early November.

Here's what that means in practice: A 3.6% COLA adds roughly $75–$80 per month for the average retiree. If Medicare's Part B premium rises even $15–$20, that immediately shaves off a quarter of your raise. You never see it. It's gone before it arrives.

This isn't a glitch or a mistake — it's just how the system works. Understanding it helps you plan around it.

Higher Earners Face an Extra Hit: IRMAA

If your income is above certain thresholds, Medicare adds an Income-Related Monthly Adjustment Amount (IRMAA) on top of the standard Part B premium. For 2026, those thresholds start at $109,000 for single filers and $218,000 for married couples — based on your 2024 tax return.

The extra charges are significant:

• First IRMAA tier (individual income $109,001–$136,000): $284.10/month instead of $202.90
• Second tier ($136,001–$163,000): $394.90/month
• Third tier ($163,001–$500,000): $505.70/month
• Highest tier (above $500,000): $689.90/month

At the first IRMAA tier, that's already $81 more per month than standard — per person. A married couple both on Medicare at that tier pays an extra $162/month combined. Your 2027 COLA raise could be entirely absorbed before you see a dime of it.

One detail many retirees miss: IRMAA uses your income from two years prior. That means your 2027 surcharge is based on your 2025 tax return. If you took a large IRA withdrawal in 2025 — even a one-time event — it can push you into a higher IRMAA bracket next year, even if your ongoing income is lower.

You Can Appeal IRMAA If Your Income Has Dropped

Here's the good news most people don't know: IRMAA is appealable. If your income has dropped significantly since the year Social Security is measuring — because you stopped working, lost a spouse, or had another qualifying life change — you can request a new determination.

Social Security will accept requests based on qualifying events like:

• Retirement or reduction in work hours
• Death of a spouse
• Divorce or marriage
• Loss of income-producing property
• Employer pension plan changes

If you recently transitioned into retirement and your income has dropped from what's on file, it's worth making the call. The worst they can say is no.

Also: if you received an IRMAA determination letter this November, read it carefully. It tells you what bracket you've been assigned for 2027. If it looks wrong — or if a life change applies — you have the right to appeal.

How to Protect Your Retirement Income Going Forward

The bigger issue the COLA math reveals isn't this year's number — it's the ongoing pressure on fixed income in retirement. Social Security is a foundation, but it's a foundation that can shift. Medicare premiums have risen steadily for years, IRMAA thresholds don't always keep pace with inflation, and a single large withdrawal or Roth conversion can cost you thousands in surcharges.

A few strategies worth considering:

• Manage your MAGI intentionally. Taxable income from IRA withdrawals, interest, dividends, and even certain annuity distributions all feed into the IRMAA calculation. Strategic withdrawal planning — including Roth conversions in lower-income years — can keep you below the thresholds.
• Build income that doesn't count against you in unexpected ways. Some income sources, like non-qualified annuity distributions, return your basis first — which may reduce your reported income in early retirement years. A fixed indexed annuity (FIA) with an income rider can provide guaranteed lifetime income while giving you control over when and how distributions are taken.
• Don't assume your Social Security benefit is set in stone. The timing of when you claim — and whether your spouse coordinates benefits strategically — can meaningfully affect your lifetime income and IRMAA exposure.

The retirement income picture is more layered than a single COLA percentage. Understanding how Medicare, taxes, and Social Security interact is how you keep more of what you've earned.

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Want to see how the 2027 COLA and Medicare changes affect your specific situation? I work with retirees in Texas and Oklahoma to map out income strategies that account for IRMAA, Social Security timing, and guaranteed income — so there are fewer surprises in January. Book a free 30-minute call at retire360.app/book and we'll run the numbers together.