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AARP Medicare Question and Answer Tool

En español | To determine your Medicare Part B premium or Medicare prescription drug coverage income-related adjustment amount, Social Security uses your most recent federal tax return information. In most cases, this information is your income two years prior to the year for which you must pay an income-related premium. If information is not yet available for the two years prior, Social Security will temporarily use information from the tax year three years prior. You may request Social Security to use the tax information from a more recent tax year under certain circumstances.

For more information, call Social Security at 800-772-1213 (TTY 800-325-0778) or visit your local Social Security office.

To learn more about Medicare Part B or Medicare prescription drug coverage, visit or call 800-MEDICARE (800-633-4227; TTY 877-486-2048).

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