WonkTax
Tax Reference Guide
Source information for the 2025 tax year tax calculator
Source information for the 2025 tax year tax calculator
Official IRS guidance on inflation adjustments for tax year 2025, including standard deduction amounts and tax bracket thresholds.
California has released the official 2025 tax brackets with rates ranging from 1% to 12.3%.
New York has progressive income tax rates from 4% to 10.9% with 9 brackets. NYC residents pay additional progressive city income tax (3.078%-3.876% with 4 brackets).
Pennsylvania maintains a flat income tax rate of 3.07%.
Illinois maintains a flat income tax rate of 4.95% with personal exemption allowances for the 2025 tax year.
Georgia has a flat income tax rate of 5.19% for the 2025 tax year.
North Carolina uses a flat income tax rate of 4.25% for the 2025 tax year.
New Jersey maintains progressive income tax rates from 1.4% to 10.75% for the 2025 tax year.
Virginia tax information for the 2025 tax year including budget amendments and filing season updates.
Arizona has a flat income tax rate of 2.5% for 2025 and matches federal standard deductions.
Massachusetts tax rates for 2025.
Indiana has a flat 3% state income tax for 2025 plus county-specific local income taxes ranging from 0.5% to 3%.
Maryland has progressive state income tax rates from 2% to 6.5% for the 2025 tax year. Local county/city income taxes range from 2.25% to 3.3%. Anne Arundel and Frederick counties use progressive local brackets while other jurisdictions use flat rates.
Missouri's tax brackets for 2025.
Wisconsin's tax brackets for 2025.
Colorado maintains a flat income tax rate of 4.40% for the 2025 tax year.
South Carolina's tax brackets for 2025.
Kentucky maintains a flat income tax rate of 4% for the 2025 tax year with a standard deduction of $3,270.
Oregon has progressive income tax rates from 4.75% to 9.9% for the 2025 tax year.
Connecticut has progressive income tax rates ranging from 2% to 6.99% for the 2025 tax year.
Utah has a flat income tax rate of 4.5% for 2025 and matches federal standard deductions.
Iowa has a flat income tax rate of 3.8% for 2025 and matches federal standard deductions.
Arkansas's tax brackets for 2025.
Mississippi tax rates for 2025.
Kansas tax brackets for 2025.
New Mexico tax brackets for 2025.
Nebraska's tax brackets for 2025.
Idaho has a flat income tax rate of 5.3% for 2025.
West Virginia has progressive income tax rates from 2.36% to 5.12% for the 2025 tax year.
Oklahoma has progressive income tax rates from 0.25% to 4.75% for the 2025 tax year with 6 brackets. Major tax reform legislation (HB 2764) will reduce rates and consolidate to 3 brackets beginning in 2026.
New Hampshire does not tax wages or earnings, but does tax investment income.
Rhode Island has progressive income tax rates ranging from 3.75% to 5.99% for the 2025 tax year.
Delaware maintains progressive income tax rates from 0% to 6.6% for the 2025 tax year.
North Dakota implemented significant tax reform for 2025, reducing from five brackets to three with rates from 0% to 2.5%.
Washington, D.C. has progressive income tax rates from 4% to 10.75% for the 2025 tax year.
Vermont has progressive income tax rates from 0% to 8.75% for the 2025 tax year, with both standard deductions and personal exemptions ($5,300 per person).