Roth Conversion Ladder Calculator
Plan a series of Roth conversions before retirement to minimize taxes. Calculate tax arbitrage benefits, 5-year rule timing, and optimal conversion amounts for early retirement access.
Conversion Plan Details
Conversion Ladder Summary
Conversion Years:5 years
Total Converted:$250000.00
Tax Paid Now:$55000.00
Roth at Retirement:$307664.54
Tax Arbitrage Benefit
$25000.00
Current Rate:22%
Retirement Rate:12%
Converting at 22% saves 10% vs paying 12% in retirement. Tax arbitrage reduces lifetime tax burden.
Conversion Schedule & 5-Year Rule
| Year | Age | Conversion | Tax Paid | 5-Year Rule Met | Can Withdraw |
|---|---|---|---|---|---|
| 2026 | 50 | $50000 | $11000 | 2031 | YES |
| 2027 | 51 | $50000 | $11000 | 2032 | YES |
| 2028 | 52 | $50000 | $11000 | 2033 | YES |
| 2029 | 53 | $50000 | $11000 | 2034 | YES |
| 2030 | 54 | $50000 | $11000 | 2035 | YES |
Each conversion must wait 5 years before tax-free withdrawal. Start conversions early enough that 5-year rule satisfied by retirement age.
5-Year Rule Explanation
- What: Each Roth conversion has its own 5-year clock. Cannot withdraw conversion amount tax-free until 5 years after conversion.
- When: Clock starts January 1 of year conversion is made. Expires December 31 of 5th year.
- Penalty: Withdraw before 5 years: 10% early withdrawal penalty PLUS ordinary income tax on converted amount.
- Stacking: Multiple conversions = multiple 5-year clocks. Each conversion tracked separately.
- Strategy: Start conversion ladder at age 50 to have tax-free access by age 55. Plan 5+ years before retirement.
- Original Roth: Original Roth IRA contributions have separate 5-year rule (starts when first Roth opened).
Roth Conversion Ladder Strategy
- Start Early: Begin conversions 5+ years before retirement. Ensure 5-year rule satisfied by retirement age.
- Fill Tax Brackets: Convert amount that fills lower tax brackets. Avoid jumping into higher bracket.
- Annual Conversions: Spread conversions over multiple years. Smaller annual amounts vs one large conversion.
- Income Management: Convert in years with low income (between jobs, early retirement before Social Security).
- Tax Rate Arbitrage: Convert when tax rate lower than expected retirement rate. Most beneficial if current rate 12-22%, retire rate 22-32%.
- Early Retirement Access: Roth conversions provide early retirement income before age 59.5 (if 5-year rule met). No penalty!
- No RMDs: Roth IRAs have no RMDs during owner lifetime. Conversions reduce future Traditional IRA RMD burden.
Conversion Considerations
- Tax Payment Source: Pay conversion tax from NON-retirement funds. Using IRA funds reduces conversion benefit.
- Cash Flow: Need cash available to pay tax each year. Plan tax payments as part of conversion strategy.
- ACA Premiums: Large conversion increases MAGI. May affect ACA premium subsidies if not yet 65.
- IRMAA: Medicare premiums (IRMAA) affected by income. Large conversion may increase Medicare costs if over 63.
- NII Tax: 3.8% Net Investment Income Tax applies if MAGI over threshold. Conversion may trigger NII tax.
- State Tax: Some states tax conversions differently. Check state tax treatment of Roth conversions.
- Recharacterization: Cannot recharacterize (undo) conversions since 2018 (TCJA). Conversion is permanent.
- Estate Planning: Roth IRAs better for heirs. No tax on inherited Roth (if 5-year rule met). Consider estate benefits.
Conversion Mistakes
- Paying Tax from IRA: Using IRA funds to pay conversion tax wastes conversion benefit. Less in Roth, same tax burden.
- Too Large Conversion: Convert too much, jump into higher tax bracket. Pay MORE tax now vs waiting.
- Ignore 5-Year Rule: Withdraw before 5 years met. 10% penalty + income tax on conversion amount.
- Wrong Rate Comparison: Convert when current rate HIGHER than retirement rate. Pay more tax now for no benefit.
- Not Starting Early: Start conversions at age 58, retire at 60. 5-year rule not met, cannot access tax-free.
- ACA/IRMAA Impact: Large conversion increases MAGI unexpectedly. ACA subsidies lost or Medicare premiums increased.
- State Tax Surprise: Assume state follows federal. Some states have different Roth conversion treatment.
When Roth Conversion Makes Sense
- Tax Rate Arbitrage: Current tax rate lower than expected retirement rate. Pay tax at 12% now vs 22% later.
- Early Retirement: Retiring before 59.5. Roth ladder provides penalty-free income if 5-year rule met.
- Large Traditional IRA: Most retirement funds in Traditional. RMDs will be large, pushing into higher brackets.
- No Pension: No pension income in retirement. Tax rate likely lower without pension pushing MAGI up.
- Legacy Planning: Want tax-free inheritance for heirs. Roth better for beneficiaries than Traditional.
- Income Gap Years: Years between work and Social Security. Low income = low tax rate = ideal conversion time.
- Fill Lower Brackets: Have room in 10% or 12% bracket. Convert to fill bracket without jumping higher.