Helpful Information
Federal Tax Rates & Brackets for 2025
Marginal Tax Rates: The seven federal tax brackets—10%, 12%, 22%, 24%, 32%, 35%, and 37%—remain in effect for 2025, now made permanent under the latest tax legislation. Chicagoland CPAseFile+6Tax Foundation+6U.S. Bank+6
Marginal Thresholds (2025):
- 37% applies to income over $626,350 (single filers) and $751,600 (married filing jointly);
- 35% over $250,525 / $501,050;
- 32% over $197,300 / $394,600;
- 24% over $103,350 / $206,700;
- 22% over $48,475 / $96,950;
- 12% over $11,925 / $23,850; and 10% below those thresholds. Jacksonville Journal-CourierBarron’s+6IRS+6Colorado PERA+6
June 15, September 15, January 15 (2026)
Quarterly Estimated Individual Taxes — Second, third, and fourth estimated tax payments due on these dates, respectively. Illinois Department of Revenue+1
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Standard Deductions:
Standard Deductions:
- Single or married filing separately: $15,000;
- Married filing jointly: $30,000;
- Head of household: $22,500. NerdWallet+15IRS+15Colorado PERA+15
Alternative Minimum Tax (AMT) — 2025
High-income earners must pay the higher of regular tax or the AMT. For 2025:
- AMT rates: 26% for income up to $239,100; 28% above that.
Exemption amounts: $88,100 (single), $137,000 (married filing jointly), beginning to phase out at $626,350 / $1,252,700 respectively. Illinois Department of Revenue+6Wikipedia+6IRS+6
Illinois State Tax Rate for 2025
Illinois applies a flat individual income tax rate of 4.95%, with no progressive brackets. This simple structure benefits residents with straightforward, predictable tax filings. Illinois Department of Revenue+6states.aarp.org+6Tax Foundation+6
Despite appearing flat to taxpayers, the effective tax burden averages closer to 2.6% across income levels after exemptions and credits. portebrown.com
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Summary Table — 2025 Tax Rates
Category | Rate / Amount |
Federal Rates | 10%, 12%, 22%, 24%, 32%, 35%, 37% |
Brackets | See detailed thresholds above |
Standard Deduction | $15K (single), $30K (married), $22.5K (HOH) |
AMT Rates | 26% / 28%, exemptions: $88K (single), $137K (married) |
Illinois Income Tax | Flat 4.95% |
