We generally consider your income from property sales or capital gains to determine your premium. To determine your Part B premium, we use the most recent tax information provided by the Internal Revenue Service (IRS). In most cases, this information is for two years prior to the year in question. For example, we generally would have used your 2006 tax return information for your 2008 premium. We use your modified adjusted gross income (MAGI) from your tax return to make this determination. Your MAGI is a combination of your adjusted gross income and tax exempt interest income.
For more information, see Social Security's publication, Medicare Part B Premiums: New Rules For Beneficiaries With Higher Incomes, call us toll-free at 1-800-772-1213 (TTY 1-800-325-0778) or visit your local Social Security office.
To learn more about Medicare Part B coverage, visit www.medicare.gov.
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