Kentucky Estimated Tax Payments Calculator

2026 rules

Enter your expected income to see what to send Kentucky and the IRS each quarter.

Your numbers

Filing status

Self-employment or business profit

W-2 wages

Other income (interest, dividends, gains, rental)

Kentucky tax withheld from paychecks

Last year's Kentucky tax (total on your return)

Leave at 0 to use this year's estimate only.

Federal tax withheld

Last year's federal tax (Form 1040 line 24)

Local income tax rate

Most Kentucky cities and counties charge an occupational tax.

Result

Kentucky quarterly payment$598

Projected federal tax (incl. SE tax)$17,147
Projected Kentucky tax$2,660
Kentucky amount to pay in estimates$2,394
Kentucky payment 1 · Apr 15, 2026$598
Kentucky payment 2 · Jun 15, 2026$598
Kentucky payment 3 · Sep 15, 2026$598
Kentucky payment 4 · Jan 15, 2027$598
Federal amount to pay in estimates$15,433
Federal payment · Apr 15, 2026$3,858
Federal payment · Jun 15, 2026$3,858
Federal payment · Sep 15, 2026$3,858
Federal payment · Jan 15, 2027$3,858
First payment, state and federal$4,457

Kentucky at a glance

Due dates: Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027
Rates: Kentucky has a flat 3.50% income tax.

Kentucky tax brackets for 2026

All filers (taxable income)
Rate	Taxable income
3.50%	over $0

Questions

When are Kentucky estimated tax payments due for 2026?

Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027.

How much do I need to pay to avoid a penalty?

This calculator uses the federal safe harbor: 90% of this year's tax, or 100% of last year's (110% if your AGI is over $150,000), less withholding. A few states use a different share of the current year's tax, so check the Kentucky estimated-tax instructions too.