Roth Conversion & Retirement Withdrawal Optimizer
Identify your ideal conversion amount this year. Model progressive federal tax brackets, track Medicare IRMAA cliffs, and forecast cumulative RMD tax savings over a 30-year horizon.
🔧 Financial Assumptions
📈 Tax Optimization Summary
Understanding Roth Conversion Optimization
1. What is a Roth Conversion?
A Roth conversion involves moving funds from a tax-deferred account (such as a Traditional IRA or 401(k)) into a post-tax Roth IRA. You pay ordinary income tax on the converted amount now, but the funds grow tax-free and can be withdrawn 100% tax-free in retirement.
2. Progressive Bracket Filling
Because tax brackets are progressive, converting too much in a single year can push you into a higher marginal bracket. A smart strategy is to convert just enough to "fill" your current tax bracket (e.g., up to the top of the 12% or 22% bracket) without spilling over into the next tier.
3. The Danger of Surcharges & Cliffs
Conversions increase Adjusted Gross Income (AGI), which can trigger hidden tax cliffs:
• Medicare IRMAA: MAGI surcharges that raise Part B and Part D premiums.
• Social Security Taxation: Pushing more of your SS benefit into taxability.
• ACA Subsidies: Reducing premium tax credits for early retirement plans.
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