Skip to main content
UPDATED FOR 2026 TAX LAW

Roth Conversion Calculator

Should you convert your Traditional IRA to a Roth? Calculate the tax cost, breakeven age, IRMAA impact, and see year-by-year projections over 10, 20, and 30 years.

Your Information

📈 Conversion Analysis

Year-by-Year Comparison: Convert vs. Don't Convert

10 Years
20 Years
30 Years

Detailed Tax Breakdown

Ready to Execute Your Roth Conversion?

Open a Roth IRA and start converting with one of these top-rated brokerages. Most offer $0 conversion fees.

Frequently Asked Questions About Roth Conversions

What is a Roth conversion and how does it work?

A Roth conversion moves money from a Traditional IRA (pre-tax) to a Roth IRA (after-tax). You pay income taxes on the converted amount in the year of conversion, but all future growth and qualified withdrawals from the Roth are completely tax-free. There is no income limit or dollar cap on conversions.

When does a Roth conversion make sense?

Roth conversions are most beneficial when: (1) your current tax rate is lower than your expected retirement rate, (2) you have a long time horizon for tax-free growth, (3) you want to reduce future Required Minimum Distributions (RMDs), (4) you want to leave tax-free money to heirs, or (5) you have a low-income year (sabbatical, early retirement, gap year).

What is the 2026 mandatory Roth catch-up rule?

SECURE 2.0 Act requires that starting in 2026, employees aged 50+ who earned over $145,000 in FICA wages the prior year must make catch-up contributions to a designated Roth account rather than pre-tax. The standard catch-up limit is $7,500, with a super catch-up of $11,250 for those aged 60-63. This applies to 401(k), 403(b), and 457(b) plans.

How does a Roth conversion affect Medicare IRMAA premiums?

Medicare uses your Modified Adjusted Gross Income (MAGI) from two years prior to determine IRMAA surcharges. A large Roth conversion increases your MAGI that year, potentially triggering higher Medicare Part B and Part D premiums two years later. For 2026, IRMAA thresholds start at $103,000 (single) and $206,000 (married filing jointly). Surcharges can range from $800 to over $4,000 per person per year.

What is the breakeven age for a Roth conversion?

The breakeven age is when the after-tax value of the Roth account equals what you would have had in the Traditional IRA after taxes on withdrawal. This typically ranges from 7 to 15+ years. Factors include: current vs. retirement tax rates, investment growth rate, state taxes, and whether you pay conversion taxes from outside funds. Living beyond your breakeven age means the conversion was financially beneficial.

Can I undo a Roth conversion?

No. Since 2018 (Tax Cuts and Jobs Act), Roth conversions are irrevocable. You cannot recharacterize a conversion back to a Traditional IRA. This makes it important to carefully calculate the tax impact before converting.

Should I convert all at once or spread it over multiple years?

Spreading conversions over multiple years is usually optimal. Converting everything in one year can push you into the highest tax brackets and trigger IRMAA surcharges. A common strategy is to convert just enough each year to "fill up" your current tax bracket without spilling into the next one. Use the optimal conversion amount shown above to find your ideal annual conversion.

Disclaimer: This calculator provides estimates for educational purposes only. Tax laws are complex and individual circumstances vary. Figures are based on 2026 federal tax brackets and may not reflect all state-specific rules, deductions, or credits. The 2026 mandatory Roth catch-up threshold ($145,000 FICA wages) and super catch-up amounts ($11,250 for ages 60-63) are based on SECURE 2.0 Act provisions. Consult a qualified tax advisor or CPA before making Roth conversion decisions. This is not tax, legal, or investment advice.

📋 File Your Taxes & Get Your Refund

Based on your calculation, here are the best options to file:

SoftwarePriceBest ForAction
FreeTaxUSAFree (Federal)Simple returnsFile Free →
TurboTaxFrom $69Complex returnsStart Filing →
H&R BlockFrom $55In-person supportFile Now →
TaxActFrom $35Budget optionGet Started →

Links may be affiliate links. We may earn a commission at no extra cost to you.

PRO

Get Your Personalized Tax Report

Download a detailed PDF with your tax breakdown, deduction checklist, and strategies to save $500-$5,000 on next year's taxes.

✅ Complete tax breakdown by bracket
✅ Missed deductions checklist
✅ Year-over-year comparison
✅ Action plan to reduce next year's taxes
Download Tax Report — $3.99Secure PayPal payment • Instant delivery

💡 Why This Matters

Studies show that Americans overpay an average of $1,200 per year in taxes simply because they miss deductions and credits they qualify for. The right tax strategy can save you $2,000 to $10,000 annually, depending on your income, filing status, and life situation.

Common Mistake #1

Not adjusting W-4 withholding after marriage, a new child, or a raise — resulting in a surprise tax bill or an oversized refund (which is an interest-free loan to the IRS).

Common Mistake #2

Choosing the standard deduction without comparing to itemized deductions. Homeowners in high-tax states often miss thousands in savings with the new $40,000 SALT cap.

Common Mistake #3

Missing refundable credits like the Earned Income Tax Credit (EITC). About 20% of eligible taxpayers fail to claim EITC, leaving up to $7,830 on the table.

Understanding Tax Brackets (2026)

Tax brackets are marginal. A single filer earning $60,000 pays an effective rate of about 14% — not the 22% bracket rate. Here is how it breaks down:

10% × $11,925 = $1,192.50
12% × $36,550 = $4,386.00
22% × $11,525 = $2,535.50
Total: $8,114 → Effective rate: ~13.5%

❓ Frequently Asked Questions

How much can I save with the standard deduction in 2026?+
For 2026, the standard deduction is $16,100 for single filers and $32,200 for married filing jointly under OBBBA. Seniors 65+ get an additional $4,000 bonus deduction, meaning a married couple over 65 could shield up to $40,200 from federal income tax. If your itemized deductions total less than these amounts, the standard deduction is the better choice — and roughly 87% of taxpayers benefit from it.
Should I itemize or take the standard deduction?+
Itemize if your total deductible expenses exceed the standard deduction. Common itemized deductions include mortgage interest, state and local taxes (SALT, now capped at $40,000), charitable donations, and medical expenses exceeding 7.5% of AGI. Use our Federal Income Tax Calculator to compare both options with your specific numbers.
What tax credits am I eligible for in 2026?+
Common 2026 credits include: Child Tax Credit ($2,000/child), Earned Income Tax Credit (up to $7,830 for 3+ children), American Opportunity Credit (up to $2,500 for college), Saver's Credit for retirement contributions, and the Child & Dependent Care Credit. Credits reduce your tax bill dollar-for-dollar, making them more valuable than deductions.
How do tax brackets actually work?+
Tax brackets are marginal, meaning only the income within each bracket is taxed at that rate. Earning $60,000 does not mean you pay 22% on everything. You pay 10% on the first $11,925, 12% on $11,926–$48,475, and 22% only on $48,476–$60,000. Your effective rate ends up around 13.5%. Try our Tax Bracket Calculator to see your exact breakdown.
When should I hire a tax professional vs. DIY?+
Consider a tax professional if you are self-employed, own rental properties, had significant investment activity, experienced major life changes, have foreign income, or earn over $200,000. A CPA typically costs $200–$500 but can save thousands in complex situations. For straightforward W-2 returns, free tax software handles most cases well.
What's the difference between a tax deduction and a tax credit?+
A deduction reduces your taxable income — a $1,000 deduction in the 22% bracket saves $220. A credit reduces your actual tax bill — a $1,000 credit saves you a full $1,000. Some credits are refundable (you get money back even if you owe nothing), while others are non-refundable (they can only reduce your tax to zero).

📚 Did You Know?

$3,167

Average federal tax refund for 2025 filing season. Many taxpayers could keep this money year-round by adjusting their W-4 withholding.

87%

of taxpayers take the standard deduction. With the 2026 increase to $16,100 (single) and $32,200 (married), even more will benefit.

20%

of eligible taxpayers fail to claim the Earned Income Tax Credit, leaving up to $7,830 in refundable credits unclaimed each year.

$40K

New 2026 SALT deduction cap under OBBBA, up from $10,000. A major benefit for homeowners in high-tax states like CA, NY, and NJ.

🛠️ Explore More Tax Tools

📈 Federal Income Tax Calculator💰 Paycheck Calculator📊 Tax Bracket Calculator💼 Self-Employment Tax📈 Capital Gains Tax⏰ Overtime Tax Calculator🍴 Tips Tax Calculator🏠 SALT Deduction Calculator📋 W-2 vs 1099 Comparison💰 Roth Conversion Calculator🏥 HSA Tax Savings👴 Senior Tax Calculator

Related Resources

AI How To Invest — Smart Investment Tools ↗ReturnMyTax Home — All Tax Calculators ↗
More Free Tools From Our Network
📈
AIHowToInvest.com
145+ free financial calculators
🎓
StudLoans.com
Student loan repayment tools
🌍
AttractionScout.com
Travel attractions guide

Tax calculations are estimates for educational purposes only. This is not tax advice. Tax laws change frequently. Consult a qualified tax professional for your specific situation.

Disclosure: This site may earn commissions from qualifying purchases through affiliate links.