Roth Conversion Planner

Roth Conversion Planner With IRMAA and Tax-Cliff Context

Compare Roth conversion schedules with ordinary brackets, IRMAA, ACA, LTCG, NIIT, RMD, and 5-year-clock constraints visible.

Roth conversion planning is rarely just a bracket-filling exercise. Medicare premiums, ACA cliffs, capital gains, required distributions, and cash-flow timing can all change the modeled tradeoff.

This page describes ArthaPilot's deterministic Roth Conversion Planner and how it fits with household tax context and retirement planning workflows.

What the planner compares

  • A baseline path against a proposed multi-year conversion schedule.
  • Ordinary bracket caps alongside IRMAA, ACA, LTCG, NIIT, and RMD constraints.
  • Tax and wealth effects across the modeled projection window.

Why simple rules can miss

A conversion that looks efficient against ordinary brackets can still create side effects through MAGI-sensitive thresholds, capital-gain interactions, Medicare lookback windows, or future RMD exposure.

Inputs to review carefully

  • Filing status, ordinary income, Social Security, and state tax assumptions.
  • Account balances by tax treatment and conversion cash source.
  • Constraint settings for brackets, IRMAA, ACA, LTCG, NIIT, and 5-year clocks.

Interpretation boundary

The planner is a deterministic modeling aid. It does not decide whether a conversion is appropriate, and it does not replace professional tax or financial advice.

FAQ

Is this only for retirees already taking RMDs?

No. It can also model pre-RMD conversion windows, where ordinary brackets, ACA exposure, and future RMD pressure may interact.

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