How Roth IRA Conversions Can Affect Part B Premiums

Key Takeaways

• If you had a business loss, unemployment, or significantly reduced income in 2024, you can convert up to your standard deduction ($14,600 single/$29,200 married) tax-free, plus potentially another $35,000+ at the 12% bracket—but you must act before year-end
• For those turning 65, be aware that Roth conversions can trigger higher Medicare Part B premiums based on income from 2 years prior; calculate whether long-term tax savings outweigh the premium increase over your expected lifetime
• Evaluate Roth conversions over a 20-30 year horizon, not just one year; a $20,000 conversion that doubles tax-free could save $5,000 in taxes, far exceeding temporary Medicare premium increases
• Submit your Roth conversion request to your custodian (Schwab, Fidelity, TD Ameritrade, etc.) several days before December 31, as they set internal deadlines days earlier to process year-end requests
• Consider Roth conversions for wealth transfer to heirs—you prepay their taxes now while potentially reducing your own required minimum distributions and allowing decades of tax-free growth for the next generation