Kentucky uses 3.5% flat income tax rate in the current TaxGuide Pro calculator data. For 2026 planning, $60,000 single taxable income -> about $2,100 state income tax before credits. $120,000 married filing jointly taxable income -> about $4,200 state income tax before credits.
Kentucky state tax calculator
Kentucky uses 3.5% flat income tax rate in the current TaxGuide Pro calculator data. For 2026 planning, $60,000 single taxable income -> about $2,100 state income tax before credits. $120,000 married filing jointly taxable income -> about $4,200 state income tax before credits.
Estimated Kentucky tax, effective rate, marginal rate, and worked examples from current calculator data.
Kentucky state facts
Examples use 2026 taxable income before credits or residency allocation. Use the official state source below to verify final filing guidance.
Kentucky uses 3.5% flat income tax rate in the current TaxGuide Pro calculator data.
$60,000 single taxable income -> about $2,100 state income tax before credits.
$120,000 married filing jointly taxable income -> about $4,200 state income tax before credits.
Credits and special deductions can change the final result.
Review dependent, household, income-based, and other Kentucky credits in the state credit finder, then confirm eligibility in official instructions.
For a 2026 return filed in 2027, confirm the due date in published Kentucky instructions. State deadlines and disaster relief can differ from federal dates.
Kentucky does not guarantee one refund date for every return. E-filed, accurate returns with direct deposit are generally processed faster than paper or reviewed returns.
Official verification: Kentucky Department of Revenue.
Use Kentucky taxable income from your return. If you only know total income, estimate deductions first.
Kentucky uses 3.5% flat income tax rate in the current TaxGuide Pro calculator data. The examples on this page use taxable income before credits, so final results can change when state deductions, credits, or residency allocation apply.
Kentucky retirement income treatment can depend on the income type, age, and state exclusions. Use the Kentucky retirement tax checker for a state-specific review.
Kentucky Social Security treatment can differ from federal treatment. Use the Kentucky Social Security checker and verify the result with the official state source.
Kentucky refund timing depends on e-file versus paper filing, direct deposit, return accuracy, identity verification, and seasonal volume. Use the Kentucky refund timeline estimator and the official refund-status source for live updates.
Use the official Kentucky revenue or tax agency sources linked in the sources section. TaxGuide Pro is an educational estimator and does not replace a filed state return or agency notice.
Last updated August 20, 2026.
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