Roth IRA Calculator

The Roth vs traditional decision comes down to one question: is your tax rate higher now or in retirement?

Last updated 19 October 2026

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How it works

Roth contributions are made after tax and grow tax-free. Traditional contributions are deductible now but taxed on withdrawal. For the same after-tax cash outlay, a traditional contribution is larger (grossed up by your current tax rate); if your retirement rate is lower than today's, traditional wins, and vice versa. Roth also has no required minimum distributions.

Formula

Roth = balance × (1 + r)ⁿ + contribution × annuity factor
Traditional (equal outlay) = same formula with contribution ÷ (1 − tax now), × (1 − tax later)

Worked example

$7,500 a year for 30 years at 7%: Roth ≈ $785,000 tax-free. Traditional on equal outlay at 22% now / 15% later ≈ $837,000 after tax — traditional edges it; at 22% / 24% Roth wins.

Frequently asked questions

What are the 2026 Roth IRA limits?

$7,500 ($8,600 at 50+). Contributions phase out from $153,000 to $168,000 MAGI (single) and $242,000 to $252,000 (joint). Above that, use a backdoor Roth.

Can I withdraw early?

Contributions any time tax- and penalty-free. Earnings are tax-free after age 59½ and five years; earlier withdrawals of earnings face tax and 10% penalty with exceptions (first home $10,000, education).

Can non-US residents contribute?

Only with US earned income not excluded by the FEIE. Most expats in the Gulf cannot contribute while abroad.

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This calculator is provided for general information only and does not constitute financial, tax, legal or employment advice. Rules change and individual contracts, free-zone regulations and court rulings can differ. Always verify with your employer, the relevant ministry or a licensed professional.