Illinois Roth IRA Calculator 2026
Project your Roth IRA growth and tax-free retirement income in Illinois (IL). Illinois has a 5.0% flat state income tax. Enter your details to see contribution limits, income eligibility, and how much your Roth IRA could be worth at retirement.
Note: No standard deduction; personal exemption $2,775
Your Roth IRA Details
2025 limit: $7,000 (under 50) / $8,000 (50+)
S&P 500 historical average: ~10% (7% after inflation)
Income Eligibility
Phase-out: $150K-$165K (single)
Enter your details to project your Roth IRA growth
How Roth IRAs Interact with Illinois State Taxes
Illinois has a flat income tax rate of 5.0%. Roth IRA contributions are made with after-tax dollars, meaning you payIllinois's 5.0% rate on the income used to fund your Roth. However, all qualified withdrawals in retirement are completely tax-free at both the federal and state level.
This trade-off is particularly favorable if you expect to remain in Illinois during retirement and believe your tax rate will stay the same or increase. With a flat-rate state, the math is straightforward: you pay 5.0% now to avoid paying taxes later on potentially decades of compound growth.
Compare this with a traditional IRA: contributions reduce your Illinois taxable income now, but withdrawals are taxed at the full state rate in retirement. If your income and tax rate stay similar, the Roth advantage comes from the tax-free growth over decades.
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