Roth IRA Calculator

Project the tax-free growth of your Roth IRA and compare it to traditional IRA savings to make the best retirement decision.

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Written by Michael Torres, CFA
Senior Financial Analyst
JW
Fact-checked by Dr. James Wilson, PhD
Options Strategy Researcher
Financial PlanningFact-Checked

Input Values

$

Your current Roth IRA account balance.

$

Amount you contribute annually (max $7,000 or $8,000 if 50+).

Your current age.

Age at which you plan to start withdrawals.

%

Expected average annual investment return.

%

Your current marginal federal income tax rate.

Results

Projected Roth IRA Balance
$0.00
Tax-Free Growth
$0.00
Total Contributions$220,000.00
Lifetime Tax Savings vs. Taxable$0.00
Monthly Tax-Free Income (4% Rule)$4,366.22
Results update automatically as you change input values.

What Is a Roth IRA?

A Roth IRA (Individual Retirement Account) is a tax-advantaged retirement account where you contribute after-tax dollars, your investments grow tax-free, and qualified withdrawals in retirement are completely tax-free. Unlike a traditional IRA where you get a tax deduction now but pay taxes on withdrawals, a Roth IRA has you pay taxes upfront in exchange for tax-free income in retirement. This can be extremely valuable if your tax rate increases over time or if tax rates rise in general.

The Roth IRA was established by the Taxpayer Relief Act of 1997 and named after Senator William Roth of Delaware. It has become one of the most popular retirement savings vehicles because of its unique combination of tax-free growth, no required minimum distributions, flexible withdrawal rules, and estate planning benefits. For many investors, especially younger workers in lower tax brackets, the Roth IRA is the single best retirement account available.

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Why the Roth IRA Is Special

The Roth IRA is the only retirement account that offers all three benefits: tax-free growth, tax-free withdrawals, and no required minimum distributions. This combination makes it the most flexible and potentially most valuable retirement account for long-term wealth building.

Roth IRA Rules and Limits (2026)

Roth IRA Key Rules for 2026
RuleDetail
Contribution Limit$7,000 (under 50) / $8,000 (50+)
Income Limit (Single)Phase-out: $150,000-$165,000 MAGI
Income Limit (Married Filing Jointly)Phase-out: $236,000-$246,000 MAGI
Minimum Age to ContributeAny age with earned income
Withdrawal of ContributionsAnytime, tax and penalty free
Withdrawal of EarningsTax-free after age 59.5 and 5-year rule
Required Minimum DistributionsNone (at any age)
Early Withdrawal Penalty on Earnings10% plus income tax before 59.5

Roth IRA Growth Projection

Roth IRA Future Value
FV = P(1 + r)^n + C × [((1 + r)^n - 1) / r]
Where:
FV = Future value (all tax-free at withdrawal)
P = Current Roth IRA balance
C = Annual contribution amount
r = Expected annual return
n = Years until retirement
Roth IRA Growth Example
Given
Current Balance
$10,000
Annual Contribution
$7,000
Current Age
30
Retirement Age
65
Expected Return
8%
Calculation Steps
  1. 1Years of contributions: 65 - 30 = 35 years
  2. 2Future value of current balance: $10,000 x (1.08)^35 = $147,853
  3. 3Future value of annual contributions: $7,000 x [((1.08)^35 - 1) / 0.08] = $1,206,198
  4. 4Total projected balance: $147,853 + $1,206,198 = $1,354,051
  5. 5Total contributions: $10,000 + ($7,000 x 35) = $255,000
  6. 6Tax-free growth: $1,354,051 - $255,000 = $1,099,051
Result
Contributing $7,000/year from age 30 to 65 at 8% return, your Roth IRA grows to approximately $1,354,051. All of this is tax-free in retirement, providing about $4,513 per month using the 4% rule.

Roth IRA vs. Traditional IRA

Roth IRA vs. Traditional IRA Comparison
FeatureRoth IRATraditional IRA
Tax on ContributionsAfter-tax (no deduction)Tax-deductible (if eligible)
Tax on GrowthTax-freeTax-deferred
Tax on WithdrawalsTax-free (qualified)Ordinary income tax
Contribution Limit (2026)$7,000 / $8,000 (50+)$7,000 / $8,000 (50+)
Income LimitsPhase-out at $150K-$165K (single)Deduction phase-out if covered by employer plan
RMDsNoneRequired starting at age 73
Early Access to ContributionsYes, alwaysTaxed + 10% penalty
Best ForExpect higher future tax ratesExpect lower future tax rates

Roth IRA Investment Strategies

Maximize Your Roth IRA

1
Contribute the Maximum Each Year
Try to contribute the full $7,000 ($8,000 if 50+) each year. If you cannot contribute the max, contribute what you can. Even partial contributions benefit from decades of tax-free growth.
2
Contribute Early in the Year
Contributing your full annual amount in January (or as early as possible) gives your money the maximum time to grow. This can add 5-10% more to your balance over a career compared to contributing in December.
3
Invest Aggressively in Your Roth
Since Roth growth is tax-free, put your highest-growth potential investments (stocks, growth funds) in your Roth and more conservative investments (bonds) in taxable accounts. This maximizes the value of the tax-free status.
4
Consider the Backdoor Roth if Over Income Limits
If your income exceeds the Roth IRA limits, contribute to a non-deductible traditional IRA and then convert to Roth. This is legal and widely used. Consult a tax professional about the pro-rata rule.
5
Never Withdraw Unless Absolutely Necessary
While you can withdraw Roth IRA contributions at any time without penalty, try to let the money grow tax-free for as long as possible. Every dollar left in the account continues to compound tax-free.

Roth IRA Equivalent in Canada: TFSA

The Canadian equivalent of the Roth IRA is the Tax-Free Savings Account (TFSA). Like the Roth IRA, TFSA contributions are made with after-tax dollars, and all growth and withdrawals are tax-free. The 2024 TFSA contribution limit is $7,000, with cumulative room of $95,000 since 2009. Unlike the Roth IRA, the TFSA has no income limits for contributions, no age restrictions, and withdrawals do not affect government benefit eligibility (OAS, GIS). Unused contribution room carries forward indefinitely, and withdrawn amounts are re-added to contribution room the following year.

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Important Roth IRA Rules

The 5-year rule applies to Roth IRA earnings: you must have had a Roth IRA for at least 5 years AND be over 59.5 for earnings withdrawals to be completely tax and penalty free. Contributions (not earnings) can always be withdrawn at any time without tax or penalty, regardless of age or how long the account has been open.

Frequently Asked Questions

It depends on your current vs. future tax rate. A Roth IRA is generally better if you are in a lower tax bracket now than you expect in retirement, if you have a long time horizon (more years for tax-free growth), if you want flexibility (no RMDs, contribution access), or if you value estate planning benefits (heirs inherit tax-free). A traditional IRA is better if your current tax rate is high and you expect a significantly lower rate in retirement. Many advisors recommend contributing to both for tax diversification.

Sources & References

  • U.S. Securities and Exchange Commission (SEC) - Investor Education
  • Options Clearing Corporation (OCC) - Options Education
  • Chicago Board Options Exchange (CBOE) - Options Strategies
  • Hull, J.C. "Options, Futures, and Other Derivatives" (11th Edition, 2021)

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