Converting to a Roth will increase your income and could force you to pay higher Medicare premiums. By Kimberly Lankford, Contributing Editor April 2, 2010 Will health-care reform affect Medicare beneficiaries who convert their traditional IRAs to a Roth?It certainly will. Medicare beneficiaries always have to be careful about Roth conversions because the money you convert increases your taxable income for the year. That could cause you to pay a high-income surcharge for Medicare Part B, which currently applies to people whose adjusted gross income in 2008 (the most-recent tax return the IRS has on file) was more than $85,000 (or $170,000 on a joint return). Most people who earned less than that threshold pay $96.40 per month per person for Medicare Part B in 2010. But people who earned more than that must pay $154.70 per month or more (the charge maxes out at $353 per month for the highest-income people). See What’s in Store for Medicare Part B Premiums for more information. The new health-care-reform law freezes the high-income surcharge limit at $85,000 for single filers ($170,000 on a joint return) from 2011 to 2019, rather than increasing the income cut-offs with inflation. And, most important, it imposes a high-income surcharge on Medicare Part D premiums for people with adjusted gross incomes above the $85,000/$170,000 level. You can generally contest a high-income surcharge if you have a life-changing event, such as marriage, divorce, job loss or reduced work hours (including retirement), that affects your income level. See Pay Less for Medicare Part B for details. But converting a traditional IRA to a Roth doesn’t count. Advertisement If your IRA conversion gets you close to the $85,000 or $170,000 limit, be aware of the surcharge when deciding whether it’s worthwhile to convert, when the conversion might work best, and whether it helps to pay taxes on a 2010 conversion with your 2011 and 2012 returns. But it’s also important to keep a Roth conversion’s impact on Medicare premiums in perspective when you make your decision. “If no Roth conversion occurred, the taxpayer would have to start taking required minimum distributions from a traditional IRA at age 70 ½, which could also increase Medicare premiums, only over a longer period of time,” says Mark Luscombe, principal analyst with CCH, a provider of tax information. “One would have to do a careful analysis, therefore, to determine whether the proposed Roth conversion over the long term was harmful or beneficial to Medicare premiums.” For more help deciding whether a Roth conversion is right for you, see Should You Convert to a Roth IRA? and our Health Care Reform: What It Means for Retirees. And keep health-care reform's other tax changes in mind when timing your Roth conversion. See Health Care Reform: Tax Hikes on the Way. How will Obama’s heath care bill affect YOUR small business? Find out by clicking here. Got a question? Ask Kim at email@example.com.