Quarterly Estimated Tax Calculator — Kentucky (2026)
If you earn income in Kentucky without withholding — freelancing, contracting, rentals, dividends — the IRS expects payment four times a year, not once. This calculator turns your expected 2026 net profit into a per-quarter number covering self-employment tax, federal income tax and Kentucky state tax. Kentucky uses a flat personal income tax of 4.00% applied to taxable income after a state standard deduction of $3,270.
Kentucky Quarterly Tax Calculator
Gross 1099 income minus business expenses.
2026 due dates and safe harbor
Federal estimated payments are due April 15, June 15, September 15 of 2026 and January 15 of 2027. You avoid penalties by paying either 90% of the current year's liability or 100% of last year's (110% if prior-year AGI exceeded $150,000) — the safe-harbor rule.
Kentucky runs its own estimated-payment schedule that usually mirrors the federal dates. On $90,000 of net profit the Kentucky portion alone is about $804 per quarter.
Underpayment penalties
The IRS charges interest-style penalties per quarter you fall short, currently around 7–8% annualized. Paying late in the year does not fix an early-quarter shortfall unless you use the annualized income method on Form 2210.
Irregular income is common in bourbon work around Louisville: if Q1 is slow and Q4 is huge, the annualized method usually beats four equal payments.
Paying as a Kentucky taxpayer
Pay federally through IRS Direct Pay or EFTPS, and Kentucky through the state revenue department's online portal — keep confirmation numbers for both.
Most Kentucky cities and counties levy a local occupational license tax of 0.5%–2.5% (Louisville Metro: 2.2%).
Local and payroll taxes Kentucky adds on top
Many Kentucky cities and counties levy an occupational license tax on wages, from about 0.5% to 2.5% in Louisville. That deduction sits outside the federal and state income tax lines, so build it into your own budget on top of the numbers above.
Most Kentucky cities and counties levy a local occupational license tax of 0.5%–2.5% (Louisville Metro: 2.2%).
Nobody withholds these for you when you are self-employed in Kentucky. Local wage taxes, city business licences and gross-receipts style levies are yours to register for and remit alongside your quarterly federal and state estimates.
Working across a state line from Kentucky
Kentucky holds income-tax reciprocity agreements with Illinois, Indiana, Michigan, Ohio, Virginia, West Virginia and Wisconsin. If you commute between them, your wages are taxed only by your state of residence — file the exemption certificate with your employer so the wrong state is not withheld from every paycheck.
Remote and hybrid work complicates this further: most states tax income where the work is physically performed, so a Louisville resident spending part of the year at a client site in Tennessee may owe a nonresident return there. Keep a day-count log if you split time between states.
The rest of your Kentucky tax bill
Kentucky charges a 6% state sales tax, homeowners pay an average effective property tax of 0.83% of market value, and the minimum wage in force during 2026 is $7.25 an hour.
6% statewide with no local sales tax, though services are increasingly covered.
Income tax is only one part of a state's take. Kentucky recovers revenue through sales and property tax as well, which is why headline income tax rates alone are a poor guide to how far a salary really goes. Kentucky exempts Social Security and the first $31,110 of pension income per person.
Kentucky vs Tennessee on the same salary
On a $90,000 salary, a single filer keeps about $68,676 a year in Kentucky against roughly $72,145 in Tennessee — a difference of $3,469, or $289 a month.
Effective combined rates are 23.7% in Kentucky and 19.8% in Tennessee. Set that gap against living costs: index 91 here versus 91 there, with property tax at 0.83% and 0.66% respectively.
Kentucky income tax brackets 2026 (single filer)
| Taxable income | Rate |
|---|---|
| $0 and up | 4.00% |