For the majority of Medicare enrollees (those that were held harmless in 2011), the basic 2012 monthly premium for Part B will increase by only $3.50 to $99.90, compared with $96.40 in 2011. The law prevents a hike in the Part B premiums for Social Security recipients who have not had their benefits increased; these so called “hold-harmless” recipients had not had an increase in Social Security benefits for 3 years. However, about 27% of Medicare enrollees, however, are not hold-harmless recipients because they are new enrollees or because they are covered by Medicaid. For them, the monthly premium in 2012 is $130.90, up from $115.40 in 2011.
In 2012, high-income enrollees will pay up to $319.70 per month in Part B premiums. The higher Part B premiums in 2012 are based on an enrollee’s adjusted gross income (AGI) in 2010. A single person with AGI over $85,000 and a joint filer with AGI over $170,000 will be subject to a monthly premium higher than the basic amount. The premium scales up and reaches the maximum when AGI tops $214,000 for a single filer and $428,000 for a joint filer.
Part D. The basic coverage for 2012 is estimated to be $30, which is slightly lower than the actual average in 2011 of $30.76. The estimate for the average supplement coverage is $8, making the total Part D premium of $38.
Part D enrollees with income over threshold amounts (the same as those for Part B) pay an income-related monthly adjustment amount, in addition to the total Part D premium. Depending on income, this can be as much as $66.40 per month.
Source: Fact Sheet, CMS 10/27/11
Gross income less allowable adjustments, such as IRA, alimony, and Keogh deductions. AGI determines whether various tax benefits are phased out, such as personal exemptions, itemized deductions, and the rental loss allowance and modified adjusted gross income (MAGI).