Interactive Planning Tool

Roth Conversion & Tax-Cliff Analyzer

See what a conversion really costs — bracket creep, Medicare IRMAA, the senior-deduction phase-out, the SALT phase-down and state tax — before you convert a dollar.

Visual Explainer

How a Roth Conversion Actually Works

PRE-TAX IRA $50,000 taxable later 1. CONVERT IRS (Form 1099-R) $15,650 tax ROTH IRA $50,000 tax-free growth forever 2. GROW TAX-FREE 20 years @ 6% YEAR 20 $160,357 0% tax at withdrawal
Pre-Tax (taxable later) Roth (tax-free forever) Tax paid to IRS Outside Taxable Cash
Calculating...
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Paying the tax from:
1Your Situation
Tax Year:
Plain-English inputs — click any i to see what a term means.
Pre-Tax → Roth: Lock in today's tax rate
Wages, salary, business income, pensions, interest & dividends
Traditional + Rollover + SEP + SIMPLE IRAs on 12/31
Advanced: Existing after-tax IRA basis
Non-deductible basis already in your IRAs (Form 8606 line 14)
California default 9.3%. Enter 0 for no-tax states.
Growth & Horizon Assumptions
1

What this conversion really costs

Real cost per $1 converted
31.3¢per $1 converted
Statutory bracket: 22%
● Your amount: $50,000 Bracket ceiling: $63,600
2

After-tax wealth in 20 years

Strategy Year 20 after-tax vs. doing nothing
3

When Can I Touch This Money Tax- & Penalty-Free? (The Two 5-Year Rules)

1. Converted / Contributed Principal
Immediately
 
2. Future Growth & Earnings
Immediately
 
Tax year 2026 parameters · verified 2026-10-29