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Roth IRA Calculator

Project your tax-free Roth IRA balance at retirement.

Author
CentCompass
Last Updated
Reading Time
4 min read

Projected balance (tax-free)

$1,021,041.06

Total contributions

$245,000.00

Investment growth

$771,041.06

Balance by age

What is the Roth IRA Calculator?

A Roth IRA calculator projects tax-free retirement growth from annual after-tax contributions, applying the 2026 IRS contribution limit and the income phase-out based on modified adjusted gross income. The defining feature of a Roth is that you pay tax on the way in and nothing on the way out, so decades of growth are never taxed at all.

How the calculation works

Contributions are capped at the IRS annual limit, with a catch-up allowance from age 50. If your modified adjusted gross income falls inside the phase-out range for your filing status, the amount you may contribute is reduced proportionally; above the range, direct contributions are not permitted at all. Whatever you can contribute is invested and grows at your expected return, and qualified withdrawals in retirement are entirely free of federal income tax.

The formula

Maximum contribution = min(earned income, $7,500), plus $1,100 from age 50, giving $8,600. Within the phase-out range the allowance is reduced in proportion to how far your MAGI has moved through the range. For 2026 that range runs from $153,000 to $168,000 for single filers and heads of household, and from $242,000 to $252,000 for married couples filing jointly. Growth follows the future value of an annuity: PMT · [((1 + r)^t − 1) / r].

Worked example

Contributing the full $7,500 a year from age 30 at a 7% return grows to roughly $1,040,000 by 65 — of which about $262,500 was contributed and the remainder is growth that will never be taxed. A single filer with modified AGI inside the $153,000–$168,000 phase-out range would be limited to a reduced contribution, and one above $168,000 could not contribute directly at all.

Tips

  • Qualified withdrawals in retirement are entirely free of federal income tax.
  • Contributions for a tax year can be made until that year's filing deadline, up to $7,500.
  • Contributing early in the year gives the money longer to compound tax-free.
  • You may withdraw your own contributions at any time without tax or penalty.
  • If your income exceeds the range, ask a professional about a backdoor Roth contribution.

Common mistakes

  • Contributing while over the income limit, which creates an excess contribution and a penalty.
  • Assuming earnings can be withdrawn as freely as contributions — they cannot.
  • Overlooking the five-year rule and withdrawing earnings too soon.
  • Forgetting that contributions require earned income, so investment income alone does not qualify.
  • Missing the filing-deadline window to fund the prior tax year.

Limitations

The projection assumes a constant return and a full contribution every year. The phase-out is applied proportionally, which approximates the IRS calculation closely but not to the dollar, and the model does not cover backdoor Roth conversions, the five-year rule, spousal IRAs, or state tax treatment. The 2026 limits and ranges shown are adjusted annually by the IRS.

Frequently asked questions

What is a Roth IRA?

It is an individual retirement account funded with money you have already paid tax on. Investments grow tax-free and qualified withdrawals in retirement are not taxed at all, which is the reverse of a traditional IRA's treatment.

Roth vs Traditional IRA?

A traditional IRA may give you a deduction now and taxes withdrawals later; a Roth gives no deduction now and takes nothing later. The choice hinges largely on whether you expect your tax rate in retirement to be higher or lower than it is today.

What is the contribution limit?

For 2026 the limit is $7,500 across all your IRAs combined, rising to $8,600 from age 50 with the $1,100 catch-up. You also cannot contribute more than your earned income for the year.

What are the income (MAGI) limits?

Eligibility phases out between $153,000 and $168,000 of modified AGI for single filers and heads of household, and between $242,000 and $252,000 for married couples filing jointly. Within the range the allowance shrinks proportionally; above it, direct contributions are not permitted.

Are withdrawals taxed?

Qualified withdrawals of both contributions and earnings are free of federal income tax. A withdrawal is qualified once you are 59½ or older and the account has satisfied the five-year rule.

What is the five-year rule?

Earnings can only be withdrawn tax-free once five tax years have passed since your first Roth contribution, in addition to meeting an age or other qualifying condition. The clock starts with your first contribution, not with each new one.

Can I withdraw contributions before retirement?

Yes. Because contributions were made with after-tax money, you may withdraw the amount you put in at any time without tax or penalty. Earnings are treated differently and can trigger both if withdrawn early.

What is a backdoor Roth IRA?

It refers to contributing to a traditional IRA and converting it to a Roth, a route sometimes used by those above the income limits. The pro-rata rule can make it taxable if you hold other pre-tax IRA balances, so professional advice is worthwhile.

Does a Roth IRA have required minimum distributions?

No. Unlike traditional IRAs and 401(k)s, a Roth IRA has no required minimum distributions during the original owner's lifetime, which lets the balance keep growing tax-free for as long as you choose to leave it alone.

When is the contribution deadline?

Contributions for a given tax year may generally be made up to the federal tax filing deadline the following April, without extensions. That gives a window in which you can fund either the current or the prior tax year.

Do I need earned income to contribute?

Yes. Contributions require earned income such as wages or self-employment income; investment income, pensions, and Social Security do not qualify. A working spouse can, however, fund a spousal Roth IRA for a non-working partner.

Roth IRA or Roth 401(k)?

A Roth 401(k) allows far larger contributions and may attract an employer match, while a Roth IRA offers wider investment choice and no required minimum distributions. Many savers use the workplace plan up to the match and an IRA alongside it.

Related guides

Sources

How this page is produced

Editorial process. CentCompass is maintained independently, and this page is written and checked against the official publications listed above before it goes live. There is no separate editorial reviewer. This page was last checked on . See our editorial policy.

How the calculations work. Every result comes from a small, unit-tested calculation engine rather than a spreadsheet or a hardcoded table. Loans use the standard amortization formula, growth uses compound-interest math, income tax applies the federal progressive brackets, and payroll applies Social Security and Medicare rules. Our methodology sets out each one.

Where the figures come from. Tax brackets, standard deductions, FICA parameters, and contribution limits are stored once in a dated registry and read directly by the calculators — the same values appear in the text above, so the two can never drift apart. Each figure records its source, effective tax year, and review status on our data sources page.

Update policy. Regulatory figures are checked against their primary source when the IRS, SSA, or another authority publishes new values — typically each autumn for the following tax year — and again at the scheduled review date recorded for each dataset. Figures that have not been checked yet are marked as draft on the data sources page until that check is complete.

Educational purposes only — not financial, tax, or investment advice (disclaimer).