How Rising Medicare Premiums Are Quietly Eating Into Your Social Security Check

For millions of retirees, Social Security serves as a critical source of monthly income. Each year, beneficiaries often look forward to cost-of-living adjustments (COLAs) that are designed to help those benefits keep pace with inflation. 

In recent years, though, Social Security has lost out on a lot of buying power. And that’s despite the fact that several post-pandemic COLAs were quite generous. 

The problem boils down to rising healthcare expenses eroding those COLAs. And rising Medicare premiums are largely to blame.

Why increasing Medicare premiums have such a big impact on Social Security

While Medicare Part A, which pays for hospital care, is free for most enrollees, Part B enrollees must pay a monthly premium. For seniors who are on both Medicare and Social Security, those Part B premiums are deducted from monthly benefits automatically. 

For this reason, when Medicare Part B premiums increase, retirees on Social Security may see a smaller net benefit even during periods when COLAs are more generous.

In 2026, Social Security benefits got a 2.8% COLA. However, the cost of Medicare Part B rose from $185 per month to $202.90. The problem is that Medicare’s standard Part B premium increased at a much faster rate, percentage-wise, than Social Security’s COLA. 

In fact, based on the average monthly benefit, 2026’s Medicare Part B increase ate up approximately one-third of that 2.8% COLA. As such, a lot of seniors have been left with less additional income to cover their everyday expenses. 

Of course, this isn’t so surprising, because healthcare costs tend to rise at a faster pace than most expenses. But because Medicare Part B premiums are paid automatically from Social Security benefits each month for dual enrollees, any time there’s a large increase in the cost of Part B, it can eat into those monthly checks.

What retirees can do to protect their income

If you’re enrolled in Medicare, you may not be able to avoid paying for Part B. But there are steps you can take to make those increases more manageable.

One option is to review your Medicare coverage every year during open enrollment. That won’t reduce the cost of Part B, but it may lead to you finding a lower-cost drug plan that saves you money. 

Understanding your Medicare benefits is important, too. You may be entitled to certain free or low-cost services that help you stretch your Social Security checks. In fact, getting the right screenings could help you avoid more expensive care later. 

You may also want to consider supplementing your Social Security benefits with a part-time job if you’re struggling to keep up with your expenses as a whole. Even if future Social Security COLAs are more generous, if the cost of Part B keeps rising, you may not see much of a net increase to your monthly benefits. If you have additional income streams to fall back on, you may find that it’s a lot easier to manage your bills, even if your healthcare needs increase as you age.