Retirement Accounts $2M-$5M: Estate Planning and IRMAA Coordination

Significant RMDs at this balance require careful coordination with your CPA and estate attorney. IRMAA surcharges, the 10-year inherited IRA rule, and multi-year Roth conversion timing all interact. Professional coordination across tax, investment, and estate planning is essential to avoid costly mistakes.

RMDs alone generate significant taxable income. At age 73, required withdrawals run roughly $75,000 to $189,000 per year, almost certainly pushing into the 32% bracket or higher with Social Security and other income.

IRMAA surcharges on Medicare become significant. At these income levels, Medicare premium surcharges can add $2,000 to $5,000 or more per year. The surcharges jump at specific income tiers, so even a small increase can trigger the next level.

Roth conversions are essential but require careful calibration. The optimal annual conversion amount must avoid triggering higher IRMAA tiers -- since IRMAA is based on income from two years prior, a large conversion today affects premiums two years from now.

Estate planning integration is needed. Under the 10-year rule, non-spouse heirs must fully distribute inherited IRAs within ten years of death. Coordinating lifetime Roth conversions with your estate plan can significantly reduce the tax burden passed to heirs.

The tradeoff: You need a CPA who coordinates with your financial advisor and estate attorney -- tax planning at this level affects investment strategy, estate structure, and Medicare costs simultaneously.