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 yet to pass official tax rates for the 2025 tax year.
New York has yet to finalize official tax rates for the 2025 tax year.
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 tax information for the 2025 tax year.
Maryland tax updates for 2025.
Missouri's tax brackets for 2025.
Oregon has progressive income tax rates from 4.75% to 9.9% for the 2025 tax year.
Kentucky maintains a flat income tax rate of 4% for the 2025 tax year with a standard deduction of $3,270.
Connecticut has progressive income tax rates ranging from 2% to 6.99% for the 2025 tax year.
Iowa has a flat income tax rate of 3.8% for 2025 and matches federal standard deductions.
Mississippi tax rates for 2025.
Kansas tax brackets for 2025.
Nebraska's tax brackets for 2025.
Idaho has a flat income tax rate of 5.3% for 2025.
Oklahoma's tax information for 2025 tax year.
New Hampshire does not tax wages or earnings, but does tax investment income.
North Dakota implemented significant tax reform for 2025, reducing from five brackets to three with rates from 0% to 2.5%.