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Roth IRA Calculator

Calculate your Roth IRA retirement savings with tax-free growth and withdrawals.

Roth IRA Details

years
years
$
$
%
%
%

Tax-Free Balance at Retirement

$1,205,694

100% tax-free in 35 years

Total Contributions
$247,500
Tax-Free Earnings
$958,194
Monthly Retirement Income
$4,019
Advantage vs Traditional
$0

Roth vs Traditional IRA

Roth IRA (Tax-Free)$1,205,694
Traditional IRA (After Tax)$1,313,898

What is a Roth IRA?

A Roth IRA is an individual retirement account that offers tax-free growth and tax-free withdrawals in retirement. Unlike traditional IRAs where contributions may be tax-deductible, Roth IRA contributions are made with after-tax dollars, but all future growth and withdrawals are completely tax-free.

Key Roth IRA features:

  • Tax-free growth: Investments grow without any tax drag
  • Tax-free withdrawals: Qualified distributions are 100% tax-free
  • No RMDs: No required minimum distributions during owner's lifetime
  • Flexible access: Contributions (not earnings) can be withdrawn anytime
  • Estate planning: Tax-free inheritance for beneficiaries

2024 contribution limits:

  • Under age 50: $7,000 per year
  • Age 50 and over: $8,000 per year (includes $1,000 catch-up)

Roth IRA Income Limits

Roth IRA contributions are limited based on Modified Adjusted Gross Income (MAGI):

2024 Income Limits - Single/Head of Household:

  • Full contribution: MAGI under $146,000
  • Partial contribution: $146,000 - $161,000
  • No direct contribution: Over $161,000

2024 Income Limits - Married Filing Jointly:

  • Full contribution: MAGI under $230,000
  • Partial contribution: $230,000 - $240,000
  • No direct contribution: Over $240,000

Backdoor Roth for high earners:

  • Contribute to non-deductible traditional IRA
  • Convert to Roth IRA (pay tax on any gains)
  • Works best with no existing traditional IRA balance
  • Consult a tax professional for proper execution

Roth IRA Growth Calculation

Calculate the tax-free growth potential of your Roth IRA:

Roth IRA Future Value

FV = PMT × [((1 + r)^n - 1) / r] × (1 + r)

Where:

  • FV= Future value (tax-free in retirement)
  • PMT= Annual contribution
  • r= Expected annual return
  • n= Number of years

Roth vs Traditional IRA

Choose Roth when:

  • You expect higher tax rates in retirement
  • You're in a lower tax bracket now (early career)
  • You want tax-free income in retirement
  • You want to avoid RMDs
  • You want tax-free inheritance for heirs

Choose Traditional when:

  • You expect lower tax rates in retirement
  • You need the tax deduction now
  • You're in a high tax bracket currently
  • You can't contribute to Roth (income limits)

Mathematical break-even:

If tax rates are identical now and in retirement, Roth and Traditional produce the same after-tax result. The difference comes from tax rate changes.

How to Use This Calculator

Our Roth IRA calculator projects your tax-free retirement savings:

  1. Enter Contribution Details:
    • Annual contribution amount
    • Current age and retirement age
    • Current Roth IRA balance (if any)
  2. Set Investment Assumptions:
    • Expected annual return (7-10% historical average)
  3. View Results:
    • Tax-free retirement balance
    • Total contributions vs growth
    • Annual tax-free income potential (4% rule)
    • Tax savings compared to traditional

Roth IRA Withdrawal Rules

Qualified distributions (tax-free and penalty-free):

  • Must be age 59½ or older
  • Account must be open 5+ years
  • All withdrawals are completely tax-free

Contribution withdrawals (always):

  • Can withdraw contributions anytime
  • No taxes or penalties on contributions
  • Order: Contributions first, then conversions, then earnings

Early withdrawal exceptions:

  • First-time home purchase (up to $10,000)
  • Qualified education expenses
  • Disability
  • Medical expenses exceeding 7.5% of AGI
  • Substantially equal periodic payments (72(t))

Roth Conversion Strategies

What is a Roth conversion?

Converting traditional IRA/401(k) funds to Roth IRA. You pay taxes now on the converted amount, but future growth is tax-free.

When conversion makes sense:

  • Low-income years (job loss, sabbatical, early retirement)
  • Market is down (convert more shares for same tax cost)
  • Tax rates expected to rise
  • Want to reduce future RMDs
  • Estate planning (tax-free inheritance)

Conversion strategies:

  • Fill up the bracket: Convert enough to top of current tax bracket
  • Multi-year ladder: Spread conversions over several years
  • Mega backdoor Roth: After-tax 401(k) contributions converted to Roth

Warning: Pay conversion taxes from external funds, not the IRA itself, to maximize tax-free growth.

Worked Examples

30-Year Roth IRA Growth

Problem:

Contribute $7,000/year from age 30 to 60 with 8% average return. What's the tax-free balance?

Solution Steps:

  1. 1Annual contribution: $7,000
  2. 2Years: 30
  3. 3Return: 8%
  4. 4FV = $7,000 × [(1.08^30 - 1) / 0.08] × 1.08
  5. 5FV = $7,000 × 122.35
  6. 6Total contributions: $210,000

Result:

Tax-free balance: ~$856,450. You contributed $210,000 and earned $646,450 in tax-free growth. At 4% withdrawal, that's $34,258/year tax-free.

Roth vs Traditional Tax Comparison

Problem:

Compare $7,000/year for 30 years at 8% return. Current tax bracket 22%, expected retirement bracket 22%.

Solution Steps:

  1. 1Both grow to ~$856,450
  2. 2Roth: Paid $1,540 tax upfront (22% of $7,000), withdraw $856,450 tax-free
  3. 3Traditional: No tax upfront, but 22% tax on $856,450 = $188,419 in taxes
  4. 4Wait - that's the same! (22% now vs 22% later on same growth)
  5. 5True, BUT if retirement rate is lower (12%), Traditional wins
  6. 6If retirement rate is higher (32%), Roth wins

Result:

At same tax rates, results are identical. Roth wins if tax rates rise. Traditional wins if tax rates fall. Most young investors benefit from Roth due to likely higher future taxes.

Backdoor Roth for High Earner

Problem:

Income $250,000 (over Roth limit). How to contribute through backdoor Roth?

Solution Steps:

  1. 1Step 1: Contribute $7,000 to non-deductible traditional IRA
  2. 2Step 2: Wait a few days (some wait 1 month)
  3. 3Step 3: Convert entire amount to Roth IRA
  4. 4Tax owed: Only on any gains during waiting period (~$0)
  5. 5Warning: If you have existing traditional IRA balance,
  6. 6pro-rata rules apply (consult tax professional)

Result:

Successfully contribute $7,000 to Roth annually despite income limits. Must not have existing traditional IRA balance for cleanest execution.

Tips & Best Practices

  • ✓Contribute early in the year to maximize tax-free growth time
  • ✓Max out employer 401(k) match before funding IRA
  • ✓Consider backdoor Roth if over income limits
  • ✓Use Roth for aggressive investments (more tax-free upside)
  • ✓Convert to Roth in low-income years (career gap, early retirement)
  • ✓Don't overlook spousal Roth IRA contributions
  • ✓Pay conversion taxes from external funds, not the IRA
  • ✓Young investors often benefit most from Roth due to long time horizon

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Frequently Asked Questions

Choose Roth if you expect higher tax rates in retirement (common for young workers) or want tax-free income flexibility. Choose Traditional if you need the deduction now and expect lower retirement taxes. Many advisors suggest Roth for those in the 22% bracket or lower, Traditional for 32%+. Consider having both for tax diversification.
Yes! 401(k) and IRA limits are separate. You can contribute to both. However, if you're covered by a workplace plan and have high income, traditional IRA deductions may be limited (but Roth contribution depends only on income limits). Many people max out both 401(k) and Roth IRA.
Contributions (what you put in) can be withdrawn anytime, tax-free and penalty-free. Earnings are subject to taxes and 10% penalty before age 59½ unless an exception applies. Always withdraw contributions first. This makes Roth IRA somewhat flexible for emergencies.
For tax-free earnings withdrawal, the account must be open 5+ years AND you must be 59½+. The 5-year clock starts January 1 of the year of your first contribution. For conversions, each conversion has its own 5-year period for penalty-free (not tax-free) access before 59½.
Yes, if you file jointly and have sufficient earned income. This is called a spousal IRA. A non-working spouse can have their own Roth IRA funded from the working spouse's income. Each spouse can contribute up to the limit to their own account.
No income limit for Roth conversions. Anyone can convert traditional IRA or 401(k) to Roth, regardless of income. You'll pay taxes on the converted amount at your current rate. This is why backdoor Roth and Roth conversions are popular strategies for high earners.

Sources & References

Last updated: 2026-01-22