Roth IRA Conversion Calculator

Analyze Roth IRA conversion strategies with break-even year calculation, tax impact analysis, and optimal conversion amount recommendations. Free, fast, and private — runs entirely in your browser.

Traditional IRA Balance ($)

Conversion Amount ($)

Amount to convert to Roth

Current Age

Retirement Age

Current Federal Tax Bracket

Expected Retirement Tax Bracket

Expected Annual Return (%)

State Tax Rate (%)

Pay conversion taxes from outside funds (recommended)

Net Benefit of Converting $50,000 to Roth IRA

+$26,394

Converting would leave you $26,394 better off at retirement (age 65).

Tax Cost Now

-$14,500

29.0% effective rate

With Conversion

$617,215

after-tax at retirement

Without Conversion

$564,974

after-tax at retirement

Break-Even Year

Year 1 (Age 46)

Scenario A: Keep Traditional

Starting Balance$200,000

Growth (20 yrs at 7%)$773,937

Taxes at withdrawal (27.0%)-$208,963

After-Tax Value$564,974

Scenario B: Convert $50,000 to Roth

Roth (tax-free at 65)$193,484

Remaining Traditional (after tax)$423,730

Tax cost of conversion (paid now)-$14,500

Opportunity cost of tax payment-$25,847

After-Tax Value$617,215

After-Tax Value Over Time: Traditional vs Roth Conversion

Traditional (after-tax)

With Roth Conversion (after-tax)

$0$387K$774K

Year-by-Year Comparison (20 years)

Year	Age	Traditional (pre-tax)	Traditional (after-tax)	Roth + Trad (after-tax)	Net Benefit
1break-even	46	$214,000	$156,220	$169,904	+$13,684
2	47	$228,980	$167,155	$181,049	+$13,894
3	48	$245,009	$178,856	$192,989	+$14,132
4	49	$262,159	$191,376	$205,779	+$14,402
5	50	$280,510	$204,773	$219,480	+$14,707
... 10 more years ...
16	61	$590,433	$431,016	$452,491	+$21,475
17	62	$631,763	$461,187	$483,726	+$22,539
18	63	$675,986	$493,470	$517,177	+$23,707
19	64	$723,306	$528,013	$553,002	+$24,989
20	65	$773,937	$564,974	$591,368	+$26,394

Optimal Conversion Amount Analysis

Net benefit of different conversion amounts with your current tax rates and time horizon.

$10,000+$5,279

Tax cost: $2,900 | After-tax total: $575,422

$25,000+$13,197

Tax cost: $7,250 | After-tax total: $591,094

$50,000current+$26,394

Tax cost: $14,500 | After-tax total: $617,215

$75,000+$39,591

Tax cost: $21,750 | After-tax total: $643,335

$100,000+$52,788

Tax cost: $29,000 | After-tax total: $669,455

$150,000+$79,182

Tax cost: $43,500 | After-tax total: $721,696

$200,000best+$105,575

Tax cost: $58,000 | After-tax total: $773,937

Key Considerations

Conversion Favored When

- Current tax rate lower than retirement rate
- Long time horizon (more tax-free growth)
- Can pay taxes from outside funds
- Want to eliminate RMDs at age 73+
- Estate planning (tax-free to heirs)

Traditional Favored When

- Current tax rate higher than retirement rate
- Short time horizon to retirement
- Must use IRA funds to pay conversion tax
- Conversion pushes you into higher bracket
- Need the funds before age 59.5

This calculator provides estimates for educational purposes only. It assumes constant tax rates and returns, which will vary in practice. Roth conversions may have additional implications for Medicare premiums (IRMAA), Social Security taxation, and state taxes. Consult a qualified tax advisor or financial planner before making conversion decisions.

Save your results

Try Retirement Calculator Track Your BMI Calculate Daily Calories

Compare Financial Products

See personalized rates and offers from top providers.

Compare Now

Sponsored · We may earn a commission at no cost to you

How to Use Roth IRA Conversion Calculator

1Enter your Traditional IRA balance and conversion amount.
2Set your current and expected retirement tax rates.
3View the break-even year and total tax impact.
4Explore optimal conversion strategies.

Frequently Asked Questions

What is a Roth IRA conversion?▾

A Roth IRA conversion moves money from a Traditional IRA to a Roth IRA. You pay taxes now on the converted amount but enjoy tax-free growth and withdrawals in retirement.

When does a Roth conversion make sense?▾

Generally when your current tax rate is lower than your expected retirement tax rate, or when you want to reduce Required Minimum Distributions (RMDs).

Is this calculator free?▾

Yes, completely free with no sign-up required. All calculations run in your browser.

How accurate is this calculator?▾

Uses current US tax brackets and standard growth assumptions. Consult a financial advisor for personalized conversion strategies.

Get weekly tips for Roth IRA Conversion Calculator & more

No spam. Unsubscribe anytime.

About Roth IRA Conversion Calculator

Analyze Roth IRA conversion strategies with break-even year calculation, tax impact analysis, and optimal conversion amount recommendations. Free, fast, and private — runs entirely in your browser.

NexTool's Roth IRA Conversion Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.