Roth IRA Calculator

Compare your Roth IRA savings against a standard taxable brokerage account. See how tax-free growth impacts your retirement accumulation over time.

IRS Notice (2026 limits): The combined annual contribution limit for Traditional and Roth IRAs is $7,500 (under age 50) or $8,600 (age 50 or older), limited by your taxable compensation.

Current age

Current Roth IRA balance

Annual contribution

Maximize contributions

Expected retirement age

Expected annual return

Marginal tax rate

Individual Retirement Accounts

What Is a Roth IRA Calculator?

A Roth IRA (Individual Retirement Account) is a personal savings plan funded with after-tax dollars. While you don't receive an upfront tax deduction, the primary advantage is that your investment growth and qualified retirement withdrawals are 100% tax-free.

A Roth IRA calculator estimates the future value of your savings and highlights the distinct advantages of tax-free growth compared to standard taxable brokerage accounts. It helps you see how much you can accumulate based on your contribution habits and expected market return.

Industry Insights: Roth IRAs are particularly powerful because they have no lifetime Required Minimum Distributions (RMDs) for the original owner. This means you can let your investments compound indefinitely and pass them on to heirs tax-free.

Parameters Defined

Anatomy of a Roth IRA Projection

To estimate your long-term growth and tax advantages, the calculator utilizes key variables related to your savings and tax details. Adjusting these parameters gives you a clear picture of your future net worth:

Current Age & Retirement Age: Defines the length of the compounding phase. The larger the gap between these numbers, the more time your investments have to grow.
Current Balance: Your starting capital in your Roth IRA account. Even small initial balances compound significantly over decades.
Annual Contribution ($): The dollar amount you plan to save each year. The IRS limits this amount annually (e.g. $7,500 for 2026 under age 50).
Expected Rate of Return (%): The annual return you expect your portfolio to earn. Historically, the stock market averages around 7% to 10% before inflation.
Marginal Tax Rate (%): Your tax bracket. Used to calculate the annual 'Tax Drag' on interest/capital gains inside a standard taxable brokerage account.
Taxable Account Contrast: Shows what you would accumulate in a regular account if you paid annual income tax on your investment returns.

The Mathematical Model

How Are Projections Calculated?

The calculator runs annual simulations comparing a tax-exempt Roth IRA with a taxable brokerage account using these formulas:

Compounding growth with zero annual tax drag

\text{Roth End Balance}=\text{Prior Balance}\times(1+\text{Return Rate})+\text{Annual Contribution}

Adjusts return rate downward to account for annual taxation

\text{Effective Taxable Return}=\text{Return Rate}\times(1-\text{Marginal Tax Rate})

Compounding growth with annual tax drag applied

\text{Taxable End Balance}=\text{Prior Balance}\times(1+\text{Effective Return})+\text{Annual Contribution}

Typical Roth IRA Calculation Example

Let's look at a standard example: $30,000 starting balance, contributing $7,500 annually for 35 years at an expected 6% return, in a 25% marginal tax bracket.

Metric	Value
Roth IRA Ending Balance (Age 65):	$1,066,343
Taxable Ending Balance (Age 65):	$751,245
Total Accumulated Tax Paid (Taxable):	$152,915
Roth Savings Premium:	+$315,098

Roth IRA vs. Traditional IRA

Both accounts offer great tax advantages, but they differ in tax timing:

Feature	Roth IRA	Traditional IRA
Tax Advantage Timing	Withdrawal phase (Tax-free payouts)	Contribution phase (Upfront deduction)
Growth Tax Treatment	100% Tax-free growth	Tax-deferred growth
Required Minimum Distributions (RMDs)	None (No lifetime withdrawals required)	Yes (Mandatory withdrawals at age 73+)
Income Limitations	Yes (Phase-outs restrict contributions)	None to contribute (Deduction limit based on plan status)

2026 IRS IRA Contribution & Income Limits

The IRS sets maximum limits on total annual Traditional and Roth IRA contributions. In 2026, the boundaries are:

Limit type	Details
Contribution Limits	Under Age 50: Up to $7,500/year Age 50 or Older (Catch-up): Up to $8,600/year
2026 MAGI Income Phase-outs	Single Filers: $153,000 to $168,000 Married Joint Filers: $242,000 to $252,000

Strategies to Maximize Your Roth IRA

Consider these tactics to optimize your personal tax-free retirement vehicle:

Contribute at the Beginning of the Year: Investing on Jan 1 instead of Dec 31 gives your money an extra 12 months to compound.
Automate Monthly Savings: Setting up a monthly automatic deposit of $625 makes maxing out under age 50 effortless.
Understand the 'Backdoor' Strategy: If you exceed the MAGI limit, look into convert conversion strategies (Backdoor Roth IRA).
Optimize Your Asset Allocation: Focus Roth IRA investments on higher-growth assets like equities, as their large gains will be tax-free.
Avoid Early Earnings Withdrawals: While you can withdraw contributions penalty-free, removing earnings before age 59½ triggers a 10% penalty.
Use Super Catch-Up Limits: Once you cross age 50, ensure your monthly routing increases to capture the extra catch-up limit.

Comprehensive Retirement Planning

A Roth IRA is typically an additional leg of your overall financial structure. Connect your projections with our other tools:

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Retirement Income Planner

Combine all your retirement accounts, Social Security, and IRAs into a comprehensive income schedule.

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Frequently Asked Questions

Yes. However, the contribution limits are shared. In 2026, the combined total across both Traditional and Roth IRAs cannot exceed $7,500 (or $8,600 if age 50 or older).

Modified Adjusted Gross Income (MAGI) is your Adjusted Gross Income (AGI) with tax-exempt interest and certain other deductions added back in. The IRS uses MAGI to determine Roth IRA direct contribution eligibility.

If your MAGI is too high, you cannot make a direct contribution. However, you can make a non-deductible contribution to a Traditional IRA and convert it to a Roth IRA (known as a Backdoor Roth IRA).

Yes. You can withdraw your principal contributions tax-free and penalty-free at any time. However, withdrawing your earnings before age 59½ and before the account is 5 years old triggers a 10% penalty.

No. Unlike Traditional IRAs and standard workplace 401(k) plans, Roth IRAs do not require any mandatory distributions during the lifetime of the original owner.

Yes, for long-term retirement savings. Standard brokerage accounts suffer from annual 'Tax Drag' (income taxes paid on dividends and interest, and capital gains tax on transactions). A Roth IRA completely avoids this annual tax drag.

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