Quick Answer
A Roth conversion moves money from traditional retirement accounts to Roth accounts, requiring you to pay income tax on the converted amount. It makes sense when you expect higher tax rates in retirement or want tax-free income. Converting $50,000 costs about $12,000-18,500 in taxes depending on your bracket.
Best Answer
Marcus Rivera, Compensation & Benefits Analyst
Mid-career workers considering whether a Roth conversion fits their retirement strategy
What is a Roth conversion?
A Roth conversion is when you move money from a traditional IRA, traditional 401(k), or similar tax-deferred retirement account into a Roth IRA. The key trade-off: you pay income taxes on the converted amount now, but all future growth and withdrawals are tax-free.
How Roth conversions work
When you convert, the IRS treats the conversion amount as taxable income for that year. There are no income limits for conversions (unlike direct Roth IRA contributions), and you can convert any amount.
Example: $30,000 Roth conversion
If you're in the 22% federal tax bracket and convert $30,000:
When Roth conversions make sense
1. You expect higher tax rates in retirement
If you're currently in the 12% or 22% bracket but expect to be in the 24%+ bracket in retirement (due to pension, Social Security, investment income), converting now saves money long-term.
2. You have low-income years
Job loss, sabbatical, early retirement, or business downturns create opportunities to convert at lower tax rates.
3. You want tax diversification
Having both traditional and Roth accounts gives you flexibility to manage your tax bracket in retirement by choosing which accounts to withdraw from.
4. You don't need the money for 5+ years
Roth conversions have a 5-year waiting period before you can withdraw the converted principal penalty-free (though you can always withdraw your contributions from direct Roth contributions).
Roth conversion tax impact by income level
*Estimates include federal and average state taxes*
Common Roth conversion strategies
Ladder conversions: Convert a portion each year to stay in a lower tax bracket rather than converting a large amount all at once.
Example: Instead of converting $100,000 in one year (potentially pushing you to 32% bracket), convert $25,000 per year for four years in the 22% bracket.
Recharacterization timing: Convert early in the year, then recharacterize (undo) the conversion if your investments lose value or your tax situation changes unfavorably.
What you should do
1. Calculate your current and expected retirement tax brackets using our paycheck calculator
2. Identify low-income years for strategic conversions
3. Consider partial conversions to fill up lower tax brackets without jumping to the next level
4. Have cash available to pay the taxes without dipping into retirement accounts
5. Consult a tax professional for conversions over $50,000 or complex situations
[Use our paycheck calculator](paycheck-calculator) to estimate how a Roth conversion would affect your current-year taxes and plan the optimal conversion amount.
Key takeaway: Roth conversions work best when you can pay taxes at today's lower rates to avoid higher rates later. Converting $50,000 typically costs $12,000-15,000 in taxes but can save significantly more over decades of tax-free growth.
Key Takeaway: Roth conversions work best when you pay taxes at today's lower rates to avoid higher rates in retirement, with $50,000 conversions typically costing $12,000-15,000 in current taxes.
Roth conversion tax cost by conversion amount and tax bracket
| Tax Bracket | $25K Conversion | $50K Conversion | $100K Conversion | Break-even Years* |
|---|---|---|---|---|
| 12% | ~$3,500 | ~$7,000 | ~$14,000 | 8-10 years |
| 22% | ~$6,250 | ~$12,500 | ~$25,000 | 10-12 years |
| 24% | ~$6,900 | ~$13,800 | ~$27,600 | 12-15 years |
| 32% | ~$9,200 | ~$18,400 | ~$36,800 | 15-18 years |
More Perspectives
Sarah Chen, Payroll Tax Analyst
High-income earners who can't contribute directly to Roth IRAs but want Roth benefits through conversions
The backdoor Roth strategy for high earners
High earners face Roth IRA income limits ($138,000-153,000 for single filers in 2026), but there's no income limit for Roth conversions. This creates the "backdoor Roth" opportunity.
Backdoor Roth process:
1. Contribute $7,000 to traditional IRA (non-deductible)
2. Immediately convert to Roth IRA
3. Pay minimal taxes since there's little to no growth between contribution and conversion
Mega backdoor Roth for ultra-high earners
If your 401(k) allows after-tax contributions beyond the $34,750 limit (up to $70,000 total including employer match), you can:
1. Make after-tax 401(k) contributions
2. Convert them to Roth 401(k) or roll to Roth IRA
3. Build substantial Roth balances despite income restrictions
Tax bracket management through conversions
High earners should convert strategically to avoid pushing themselves into higher brackets. For example, if you're at the top of the 32% bracket ($250,525 for single filers), only convert enough to stay below the 35% threshold.
Advanced strategy: Use conversions in years with large business losses, charitable deductions, or other tax benefits to offset the conversion income.
Key takeaway: High earners can use backdoor and mega backdoor Roth strategies to build substantial tax-free retirement wealth despite income limits on direct Roth contributions.
Key Takeaway: High earners can bypass income limits through backdoor Roth conversions and mega backdoor strategies to build substantial tax-free retirement wealth.
Marcus Rivera, Compensation & Benefits Analyst
Workers within 5-10 years of retirement evaluating whether Roth conversions still make sense
Roth conversions in your 50s and 60s
Many people assume Roth conversions don't make sense close to retirement, but there are compelling reasons to consider them:
Required Minimum Distribution (RMD) reduction: Converting traditional IRA/401(k) money to Roth reduces your future RMDs, which start at age 73. Lower RMDs mean lower required taxable income in your 70s and 80s.
Legacy planning: If you don't need your retirement money for living expenses, Roth accounts are better for heirs. They inherit tax-free accounts rather than tax-deferred ones.
The retirement transition opportunity
The years between retirement and age 73 (when RMDs begin) often present the best conversion opportunities. Your income drops from working years, potentially putting you in lower tax brackets.
Example scenario: You retire at 62 with $800,000 in traditional retirement accounts. Your income drops from $120,000 to $30,000 (just Social Security and some pension). This puts you in the 12% tax bracket—perfect for strategic conversions.
Medicare considerations
Be careful: Roth conversion income counts toward Modified Adjusted Gross Income (MAGI), which affects Medicare Part B premiums. High conversion years could trigger Income Related Monthly Adjustment Amounts (IRMAA), increasing your Medicare costs.
Planning tip: Spread conversions over multiple years to avoid IRMAA thresholds, or time conversions for years before you're on Medicare.
Late-career conversion math
Even with less time for growth, conversions can make sense. Converting $100,000 at age 60 in the 22% bracket costs ~$25,000 in taxes. If that grows to $200,000 by age 80 and you'd otherwise be in the 24% bracket, you save ~$48,000 in taxes on withdrawal.
Key takeaway: The years between retirement and RMDs often provide the best Roth conversion opportunities due to lower income and tax brackets, even with less time for tax-free growth.
Key Takeaway: The retirement transition years before RMDs begin often provide optimal conversion opportunities due to temporarily lower income and tax brackets.
Sources
- IRS Publication 590-A — Contributions to Individual Retirement Arrangements (IRAs)
- IRS Publication 590-B — Distributions from Individual Retirement Arrangements (IRAs)
Reviewed by Marcus Rivera, Compensation & Benefits Analyst on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.