PolicyBrief
S. 5085
119th CongressJul 22nd 2026
A bill to amend the Internal Revenue Code of 1986 to apply inflation adjustments to the additional hospital insurance tax on high income taxpayers.
IN COMMITTEE

This bill amends the Internal Revenue Code to apply annual inflation adjustments to the income thresholds for the Additional Medicare Tax starting in 2027.

John Kennedy
R

John Kennedy

Senator

LA

LEGISLATION

Additional Medicare Tax Thresholds to Rise with Inflation Starting in 2027

This bill updates the Internal Revenue Code to stop 'bracket creep' for the Additional Medicare Tax, a 0.9% surcharge that hits high earners. Currently, the income thresholds that trigger this tax are frozen in time, meaning as inflation pushes wages up, more people accidentally fall into this higher tax bracket even if their actual purchasing power hasn't changed. Starting in 2027, the bill mandates that these thresholds be adjusted annually for inflation, specifically for single filers and married couples filing jointly.

The Inflation Buffer

Under the current rules, if you are a single filer earning over $200,000 or a married couple filing jointly over $250,000, you owe an extra 0.9% on top of the standard Medicare tax. This bill changes the game by indexing those $200,000 and $250,000 marks to the cost of living (using 2025 as the new base year). For example, if a software engineer or a senior project manager gets a 3% 'cost-of-living' raise in 2028, the tax threshold will likely move up with them, preventing that raise from being immediately eaten away by a tax bracket they weren't supposed to be in. Interestingly, the bill requires the IRS to round these adjustments up to the nearest $1,000, which offers a tiny bit of extra breathing room for taxpayers.

The Filing Status Trap

While the bill helps most high earners, it leaves one group behind: married individuals who file separately. The $125,000 threshold for these filers is explicitly excluded from the inflation adjustments. This means if you and your spouse file separately for legal or financial reasons, you’ll likely find yourself hitting that 0.9% tax much sooner than your peers as the years go by. It creates a growing gap between filing statuses that doesn't exist for other parts of the tax code, effectively penalizing this specific group of taxpayers as inflation continues to rise.

Implementation and Long-Term Math

Rolling this out isn't immediate; the first adjustments won't kick in until the 2027 tax year. The bill uses a specific formula (Section 1(f)(3)) to calculate these jumps, ensuring the tax code stays somewhat in sync with the price of groceries and gas. For a small business owner whose income fluctuates, this indexing provides a more predictable ceiling. However, because the Medicare Trust Fund relies on this revenue, the long-term challenge will be balancing this taxpayer relief with the reality of funding healthcare for seniors as the 'entry fee' for the tax moves higher every year.