Roth Conversion Analyzer

Roth conversion analysis

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Last Updated: January 23, 2026

💡 What This Tool Does

The Roth Conversion Analyzer determines whether converting traditional retirement accounts to Roth accounts makes financial sense in the model. It analyzes tax implications, timing, and long-term benefits to show whether conversion appears favorable for the inputs.

Key Questions It Answers:

  • Should a traditional IRA convert to a Roth IRA in the model?
  • When is the preferred time to do a Roth conversion?
  • How much should be converted each year?
  • What are the tax implications of converting?

📋 How to Use This Tool

Before Starting

Gather information about retirement accounts:

  • Traditional retirement account balances
  • Current tax bracket
  • Expected retirement tax bracket
  • Time until retirement
  • Available funds to pay conversion taxes

Step-by-Step Instructions

  1. Enter Account Information: Traditional account balances
  2. Set Tax Information: Current and expected retirement brackets
  3. Choose Conversion Amount: How much to convert
  4. Run Analysis: See tax impact and long-term benefits
  5. Review Break-Even: When conversion pays off
  6. Plan Conversion Strategy: Modeled timing and amounts

💡 When Roth Conversion Makes Sense

  • Current tax bracket is lower than modeled retirement bracket
  • Funds exist outside retirement accounts to pay taxes
  • Many years until retirement (time for tax-free growth)
  • Goal includes reducing future RMDs
  • Goal includes tax-free income in retirement

⚠️ Common Mistakes to Avoid

  • Converting when in high tax bracket
  • Not having funds to pay conversion taxes
  • Converting too much in one year (pushing into higher bracket)
  • Not considering future tax law changes

🔍 What to Look For

Key Metrics

  1. Tax Cost: Immediate tax due on conversion
    • Must have funds outside retirement accounts to pay
    • Can push filers into higher tax bracket
  2. Long-Term Benefit: Tax savings over retirement
  3. Break-Even Point: When conversion pays off
  4. Modeled Conversion Amount: Amount modeled to convert each year

⚠️ Red Flags

  • Conversion pushes filers into much higher tax bracket
  • No funds available to pay conversion taxes
  • Retiring soon (less time for tax-free growth)
  • Expected lower tax bracket in retirement

✅ Good Candidates for Conversion

  • Lower tax bracket now than expected in retirement
  • Funds available to pay conversion taxes
  • Many years until retirement
  • Want to reduce future RMDs

📊 How to Interpret Results

Understanding the Output

The analyzer shows whether Roth conversion makes financial sense in the model and the modeled strategy for the situation.

If Conversion Makes Sense:

  • ✅ Plan gradual conversions over multiple years
  • Stay within current tax bracket
  • Use low-income years for larger conversions
  • Coordinate with other tax strategies

If Conversion Doesn't Make Sense:

  • ⚠️ Keep traditional accounts as-is
  • Focus on other tax planning strategies
  • Re-evaluate if tax situation changes

Next Steps

  1. If beneficial: Plan multi-year conversion strategy
  2. Execute conversions in low-income years
  3. Review annually as situation changes
  4. Coordinate with other retirement strategies

🎓 Advanced Roth Conversion Strategies

Multi-Year Conversion Planning

Rather than converting everything at once, spreading conversions over multiple years allows filers to stay in lower tax brackets each year, minimizing the overall tax cost.

The Five-Year Rule

Roth conversions must age for 5 years before the converted amount can be withdrawn penalty-free (if under 59½). Plan conversions accordingly if early access is needed.

Pro-Rata Rule

With both deductible and non-deductible IRA contributions, the IRS requires pro-rata treatment of conversions. This can complicate conversion strategy and tax calculations.

Modeled Conversion Years

Preferred times to convert often include: early retirement (before Social Security starts), low-income years, before RMDs begin at 73, or years when income is in a temporarily lower tax bracket.

Conversion Limits and Recharacterization

There's no limit on conversion amounts, but a conversion cannot be "undone" (recharacterization was eliminated in 2018). Make conversions carefully and consider tax implications.

📚 Related Tools & Resources

Roth conversion strategy is most effective when integrated with the complete retirement plan:

❓ Frequently Asked Questions

Q1: When is the most favorable time to do a Roth conversion?

The most favorable times are often: (1) early retirement before Social Security, (2) years with lower income, (3) before age 73 when RMDs start, (4) when income is in a lower tax bracket than expected in retirement. Ideally, convert gradually over multiple years to stay in lower brackets.

Q2: How much tax is paid on a Roth conversion?

The converted amount is added to taxable income for the year. For example, converting $50,000 in the 22% bracket costs about $11,000 in taxes. The key is having funds outside retirement accounts to pay the tax.

Q3: Should the entire traditional IRA convert at once?

Usually not. Converting everything at once often pushes filers into higher tax brackets and costs more in taxes. It is often better to convert gradually over 5-10 years, filling the current tax bracket each year without jumping to the next one.

Q4: Can a Roth conversion be undone if the market drops?

No. The Tax Cuts and Jobs Act of 2017 eliminated recharacterization of conversions. Once a conversion is done, it is permanent. This makes timing and amount considerations even more important.

Q5: Do Roth conversions affect Medicare premiums?

Yes. Roth conversions increase Modified Adjusted Gross Income (MAGI), which can push filers into higher Medicare IRMAA brackets, increasing Part B and D premiums for 2 years. Plan conversions carefully near age 65 or when already on Medicare.

Ready to Analyze Roth Conversions?

Create a free account to determine if Roth conversion appears favorable for the modeled profile.

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