Cost Segregation Study in Kentucky

Kentucky has been cutting its individual rate on a legislated schedule tied to revenue triggers, moving from 5% to 4.5% to 4% and to 3.5% for 2026. Each step reduces the cost of Kentucky's decoupling from bonus depreciation, because the addback is measured at the state rate.

That makes Kentucky one of the easier decoupling states to plan around. The state deduction is deferred, but at 3.5% the deferral costs very little relative to a federal deduction worth up to 37%.

How Kentucky Income Tax Interacts With Federal Strategy

Kentucky imposes a flat individual income tax, reduced to 3.5% effective January 1, 2026 under House Bill 1 enacted in the 2025 session. The reduction schedule established in 2022 legislation permits half point reductions when revenue conditions are met, and the legislature has acted on those triggers consistently.

The corporate income tax rate is 5%, and Kentucky also imposes a limited liability entity tax on gross receipts or gross profits with a minimum of $175, which applies to LLCs, corporations, and limited partnerships doing business in the state.

Kentucky local occupational license taxes add another layer, typically 1% to 2.5% on net profits and wages depending on the county and city. Louisville Metro and Lexington-Fayette both impose meaningful occupational taxes that operate independently of the state income tax and are frequently overlooked in planning.

Kentucky Pass-Through Entity Tax

Kentucky enacted an elective pass-through entity tax in House Bill 360 in 2023, made retroactive to tax years beginning on or after January 1, 2022. Electing partnerships and S corporations pay tax at the individual rate on the owners' distributive shares, deduct the payment federally, and owners claim a refundable credit.

The retroactive availability was unusual and allowed Kentucky owners to capture the deduction for a year that had already closed. That window has passed for most filers, but it remains relevant for anyone amending 2022 or 2023 returns.

At a 3.5% rate the absolute dollars converted are smaller than in a high-rate state. An owner with $1 million of Kentucky pass-through income moves roughly $35,000 of state tax to the entity level, worth about $13,000 federally. That is still real money for an election that costs nothing but attention.

Kentucky owners with operations in other states should look at those states' PTETs on the income sourced there, which is frequently the larger opportunity for a Kentucky-based multistate operator.

Kentucky Depreciation Conformity

Kentucky does not conform to IRC Sec. 168(k). Kentucky's Internal Revenue Code conformity date has moved forward over time but has consistently excluded the bonus depreciation provisions, so no first-year special allowance is available for Kentucky purposes.

Kentucky limits Section 179 expensing to $100,000 with a $400,000 investment phaseout, which is more generous than the $25,000 states and well below the current federal limit. On a mid-size cost segregation study the Kentucky Section 179 allowance covers a meaningful slice of the reclassified five-year property.

Taxpayers therefore carry two depreciation schedules. The difference reverses over the MACRS lives and again on disposition, where Kentucky basis is higher and Kentucky gain is smaller. At a 3.5% rate the annual difference is modest, but on a large disposition the basis adjustment still matters.

Cost Segregation Considerations Specific to Kentucky

The first Kentucky consideration is that the low flat rate makes the decoupling cheap. A $500,000 addback costs about $17,500 of Kentucky tax in the placed-in-service year against a federal deduction worth up to $185,000. Kentucky is among the most favorable decoupling states on that ratio, alongside Pennsylvania and Indiana.

The second is the Section 179 headroom. Because Kentucky allows $100,000 rather than $25,000, a Kentucky taxpayer can recover a real portion of the reclassified personal property in year one at the state level, subject to the federal rules limiting Section 179 in rental activities.

The third is the local occupational tax layer. Net profits subject to local occupational license tax are generally computed with reference to federal or Kentucky taxable income depending on the jurisdiction, so accelerated depreciation can affect the local liability as well. Louisville and Lexington filers should confirm which base their jurisdiction uses.

The fourth is Kentucky's horse industry and agricultural property, where the component analysis in a cost segregation study frequently identifies substantial fifteen-year land improvements such as fencing, drainage, and paddock infrastructure that a straightforward 27.5 or 39 year allocation would miss entirely.

Working With AE Tax Advisors in Kentucky

AE Tax Advisors works with real estate investors, business owners, and high-income professionals across Kentucky and all fifty states. We are a licensed CPA and IRS Enrolled Agent practice, and we handle the engineering-based cost segregation study, the Kentucky conformity adjustments, the pass-through entity tax election, and the return preparation as one engagement.

In Kentucky the work is straightforward but detailed: get the Section 179 allocation right at the state level, carry the addback schedule, and confirm the local occupational tax treatment. None of it is difficult, and all of it is regularly missed when a study vendor and a preparer are not the same team.

Related reading: the complete guide to cost segregation, our cost segregation study service, short-term versus long-term rental tax treatment, lookback studies and Form 3115, and multi-state tax planning.

Kentucky tax rates, pass-through entity tax rules, and depreciation conformity provisions described on this page reflect law in effect as of August 2026 and are provided for general information only. State conformity changes frequently and often retroactively. Nothing here is tax advice for your situation, and no client relationship is created by reading it. Talk to us about your facts before acting.