Skip to main content
Simple Calculators

Roth IRA Calculator

Tax-free growth to retirement, plus your 2026 contribution limit and income phase-out

Your Roth IRA

Capped at $7,500 a year ($8,600 from age 50)

An assumption, not a prediction — real returns vary from year to year and can be negative

2026 Contribution Eligibility

Modified adjusted gross income for Roth IRA purposes

Related calculators

All finance

Quick summary

A Roth IRA grows from after-tax contributions, and qualified withdrawals are tax-free. Starting at 30 with $10,000 and adding $7,500 at the end of each year at an assumed 7% return, the account reaches about $1,143,542 at 65 — $272,500 of your own money and $871,042 of growth. For 2026 you can contribute up to $7,500 ($8,600 at 50+); the limit phases out between $153,000–$168,000 of modified AGI for single filers and $242,000–$252,000 for joint filers.

Reviewed by Simple Calculators TeamLast reviewed

For planning only — not financial or tax advice. Results are estimates based on your inputs and the stated assumptions. Confirm important decisions with a qualified professional.

How to use this calculator

  1. Enter your Current Balance ($) and the Annual Contribution ($) you plan to make each year.
  2. Enter your Current Age and Retirement Age.
  3. Set the Expected Annual Return (%) — 7% is a common planning assumption, not a prediction.
  4. Read your Roth IRA balance at retirement, the split between your money and growth, and the year-by-year table.
  5. Choose your Filing Status and enter your Modified AGI ($) to see the 2026 contribution you're allowed.

Roth IRA Formulas

Future Value with Annual Contributions

FV=B0(1+r)n+C×(1+r)n−1rFV = B_0 (1 + r)^n + C \times \frac{(1 + r)^n - 1}{r}
B_0
Current balance
r
Expected annual return as a decimal (an assumption)
n
Years until retirement
C
Annual contribution, added at the end of each year and capped at the IRA limit ($7,500, or $8,600 from age 50)

Worked example

Age 30 to 65 with $10,000 saved, $7,500 a year and a 7% return

Given
B_0 = $10,000
r = 0.07
n = 35
C = $7,500
Calculation
10,000×1.0735+7,500×1.0735−10.0710{,}000 \times 1.07^{35} + 7{,}500 \times \frac{1.07^{35} - 1}{0.07}
Result
FV ≈ $1,143,542 ($272,500 of your money plus $871,042 of growth)

Phase-Out Reduction

Allowed=⌈L−L×MAGI−SE−S10⌉×10\text{Allowed} = \left\lceil \frac{L - L \times \frac{\text{MAGI} - S}{E - S}}{10} \right\rceil \times 10
L
Your dollar limit: $7,500, or $8,600 at 50+ (or your taxable compensation if lower)
MAGI
Modified adjusted gross income for Roth IRA purposes
S
Start of the phase-out range ($153,000 single, $242,000 married filing jointly)
E
End of the range ($168,000 single, $252,000 married filing jointly)

Worked example

A single filer under 50 with MAGI of $155,555 in 2026

Given
L = $7,500
MAGI = $155,555
S = $153,000
E = $168,000
Calculation
7,500−7,500×2,55515,000=6,222.507{,}500 - 7{,}500 \times \frac{2{,}555}{15{,}000} = 6{,}222.50
Result
Rounded up to the next $10: $6,230 allowed (any result above $0 but under $200 becomes $200)

Frequently asked questions

What is the Roth IRA contribution limit for 2026?

$7,500 for 2026, plus a $1,100 catch-up if you are 50 or older, for $8,600 in total. The limit is shared across all your traditional and Roth IRAs, and you can't contribute more than your taxable compensation for the year.

What are the 2026 Roth IRA income limits?

The amount you can contribute phases out with modified AGI: $153,000–$168,000 for single and head of household filers, $242,000–$252,000 for married filing jointly, and $0–$10,000 for married filing separately if you lived with your spouse at any time in the year. Below the range you can contribute the full limit; at or above the top you can't contribute directly.

How is a reduced Roth IRA contribution calculated?

IRS Publication 590-A works out how far your modified AGI is into the phase-out range, reduces your limit by that fraction, and rounds the result up to the next $10. If the result is more than $0 but less than $200, you can contribute $200. For example, a single filer under 50 halfway through the range can contribute $3,750.

Are Roth IRA withdrawals tax-free?

Your contributions can generally be withdrawn at any time without tax. Earnings are tax-free in a qualified distribution — generally after age 59½ and once five tax years have passed since your first Roth IRA contribution. Other withdrawals of earnings may be taxed and penalized, so check the IRS rules for your situation.

Why does the calculator hold the contribution limit at this year’s amount?

The IRS adjusts IRA limits for inflation, but future amounts aren't known in advance. Holding $7,500 ($8,600 at 50+) for every year keeps the projection conservative. The expected return is also an assumption, not a prediction — results are estimates, not investment advice.

Key terms

Roth IRA
An individual retirement account funded with after-tax money whose qualified withdrawals, including earnings, are tax-free.
Modified AGI
Adjusted gross income with certain items added back, used by the IRS to decide how much you may contribute to a Roth IRA.
Phase-Out Range
The band of modified AGI over which the allowed Roth IRA contribution falls from the full limit to zero.
Five-Year Rule
Earnings come out tax-free only after five tax years have passed since your first Roth IRA contribution (and you meet another condition such as age 59½).

Methodology, sources & limitations

This page shows the formula, assumptions, and limitations used for this estimate. Rates, thresholds, and other time-sensitive inputs can change, so verify them against the relevant official source before relying on a result.

For our review approach and the primary sources we consult, see the methodology and source policy. If you spot an outdated figure or formula, please contact us with a correction.