What is the Kentucky income tax rate?

Kentucky has a flat income tax rate of 4.0%. All taxable income is taxed at this same rate regardless of income level.

Does Kentucky have a standard deduction?

Yes. The Kentucky standard deduction is $3,160 for single filers and $6,320 for married filing jointly.

How is Kentucky income tax calculated?

Kentucky uses a flat tax system. After subtracting your standard deduction (if applicable), your remaining taxable income is taxed at a flat rate of 4.0%, then added to your federal tax and FICA obligations.

How do I calculate my total Kentucky tax bill?

Your total tax includes federal income tax (10%–37%), Social Security (6.2% on the first $176,100), Medicare (1.45%), and Kentucky state income tax. Use our free calculator above for an instant breakdown.

Kentucky Income Tax Calculator 2026

Estimate your Kentucky (KY) income tax for 2026. Kentucky has a 4.0% flat state income tax. Enter your income below and click “Calculate Taxes” for an instant breakdown.

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Kentucky Income Tax Overview

Kentucky has a flat income tax rate of 4.0%. This means all taxable income is taxed at the same rate regardless of how much you earn.

The standard deduction in Kentucky is $3,160 for single filers and $6,320 for married filing jointly.

Key Facts About Kentucky Taxes

Kentucky switched from a progressive system (2%–6%) to a flat 4% rate in 2024 as part of a broader tax reform. The state plans to reduce the rate further if revenue targets are met.

Kentucky offers a $3,160 standard deduction for single filers and $6,320 for married filing jointly, plus a pension exclusion up to $31,110 that benefits retirees.

Frequently Asked Questions

What is the Kentucky income tax rate?: Kentucky has a flat income tax rate of 4.0%. All taxable income is taxed at this same rate regardless of income level.
Does Kentucky have a standard deduction?: Yes. The Kentucky standard deduction is $3,160 for single filers and $6,320 for married filing jointly.
How is Kentucky income tax calculated?: Kentucky uses a flat tax system. After subtracting your standard deduction (if applicable), your remaining taxable income is taxed at a flat rate of 4.0%, then added to your federal tax and FICA obligations.
How do I calculate my total Kentucky tax bill?: Your total tax includes federal income tax (10%–37%), Social Security (6.2% on the first $176,100), Medicare (1.45%), and Kentucky state income tax. Use our free calculator above for an instant breakdown.

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