So can you tell me what will change, now that I earn more?
You'll pay a larger percentage of the total cost of Part B based on the income you normally report to the Internal Revenue Service IRS. You'll pay monthly Part B premiums equal to 35, 50, 65, 80, or 85 percent of the total cost, depending on what you report to the IRS.
What if I filed a federal income tax return for the year?
Then you need to show us your signed copy of the return. Use Form Medicare Income-Related Monthly Adjustment Amount Life-Changing Event to report a major life-changing event.