Kentucky Inheritance Tax: 0% to Kids, 16% to Cousins

Margaret, a widow in Lexington, has a $200,000 brokerage account she wants to leave to one person. She is choosing between her younger sister and a beloved first cousin who has been like family for forty years. In Kentucky, that choice carries a tax bill the size of a new car. Leave it to her sister — a Class A heir — and Kentucky takes $0. Leave the identical $200,000 to her cousin — a Class C heir — and Kentucky takes roughly $28,620. Same money, same state, same date of death. The only variable is the relationship between the deceased and the person who inherits.

That is the entire mechanic of Kentucky’s inheritance tax, and it is the opposite of how most people assume death taxes work. There is no estate threshold to clear. There is no $13.99 million federal-style exemption at the state level. Kentucky asks one question about each beneficiary: what is your relationship to the person who died? The answer puts you in Class A, B, or C, and that class determines whether you owe nothing or up to 16%.

Kentucky has an inheritance tax, not an estate tax

The distinction matters. An estate tax (like the federal tax under IRC §2010, or the estate taxes in Massachusetts, Oregon, or Washington) is levied on the total value of the estate before it is distributed — the estate pays, and the threshold is what counts. An inheritance tax is levied on each beneficiary’s share after distribution — the recipient pays, and the relationship is what counts.

Kentucky is one of only a handful of states with an inheritance tax (the others are Maryland, Nebraska, New Jersey, and Pennsylvania). Kentucky repealed its separate estate tax effective in 2005, so there is no double layer at the state level — just the inheritance tax under KRS Chapter 140. Thirty-eight states have neither tax at all.

The three classes that decide everything

Every beneficiary of a Kentucky decedent falls into one of three classes. The class is set by statute (KRS 140.070 and 140.080), and the difference between them is enormous.

Notice what is and is not in Class A. Siblings are Class A — fully exempt. But a niece or nephew is Class B, and a cousin is Class C. The tax cliff between “my brother’s daughter” and “my own daughter” is the difference between 16% and zero. Charities, churches, and government entities are fully exempt regardless of class.

The graduated rate schedule for Class B and Class C

Class B and Class C are not flat rates — they are progressive brackets applied to the taxable inheritance (the share after the small exemption). Here are the marginal brackets:

Both classes top out at 16%, but Class C climbs there faster and starts higher. Kentucky also allows a small reduction on the computed tax for Class B and C beneficiaries; the figures below use the published rate schedule and round to whole dollars for clarity.

A quick way to read the schedule: a Class B niece inheriting $100,000 pays roughly $8,880 (about 9% effective), while a Class C cousin inheriting the same $100,000 pays roughly $12,620 (about 12.6% effective). Push either to $200,000 and the marginal rate has already maxed at 16%, so each additional dollar is taxed at the top rate.

Margaret’s $200,000 decision, resolved with math

Back to Margaret’s $200,000 brokerage account. Walk the two outcomes:

To her sister (Class A)

Sisters are Class A. The exemption is unlimited. The Kentucky inheritance tax on $200,000 to a sibling is $0. Her sister inherits the entire $200,000, and because of the step-up in basis under IRC §1014, the cost basis resets to the date-of-death fair market value — so if the account’s holdings are sold soon after, there is little to no federal capital-gains tax either.

To her cousin (Class C)

First cousins are Class C. After the $500 exemption, the taxable inheritance is $199,500. Running it through the Class C brackets above:

• First $10,000 at 6% = $600
• Next $10,000 at 8% = $800
• Next $10,000 at 10% = $1,000
• Next $15,000 at 12% = $1,800
• Next $15,000 at 14% = $2,100
• Next $40,000 at 16% = $6,400
• Remaining $99,500 at 16% = $15,920

Total Kentucky inheritance tax: $28,620 before any statutory rounding or discount. The cousin nets about $171,380 instead of $200,000. The step-up in basis under §1014 still applies — that is a federal rule, unaffected by the Kentucky class — but the inheritance-tax hit is unavoidable once the cousin is named.

What most people get wrong: the trust myth

The single most common mistake is believing that a revocable living trust, a transfer-on-death deed, or a payable-on-death account avoids Kentucky inheritance tax. It does not. Those tools avoid probate — the court process — but Kentucky inheritance tax follows the beneficiary’s class no matter how the asset travels. A $200,000 trust distribution to a cousin is taxed exactly like a $200,000 bequest in a will to that same cousin. The transfer vehicle is irrelevant; the relationship is everything.

Two other widespread misconceptions worth killing:

1. “The estate is small, so there’s no tax.” Estate size is irrelevant in Kentucky. A $40,000 inheritance to a friend (Class C) is taxed; a $4 million inheritance to a child (Class A) is not.
2. “Life insurance is taxed too.” Life insurance proceeds paid to a named beneficiary are exempt from Kentucky inheritance tax under KRS 140.030, regardless of the beneficiary’s class. This is a genuine planning lever — rerouting wealth through a life-insurance policy can deliver value to a Class C person tax-free at the state level.

The legal levers that actually reduce the tax

Because the tax is driven by relationship, the planning moves all aim to either change the class of the recipient or move the asset out of the Kentucky estate before death. Four work:

• Annual gifting during life. Under IRC §2503(b), you can give up to $19,000 per recipient per year (2026 figure) with no federal gift tax and no Kentucky inheritance tax — the asset is simply gone from the estate. A married couple can give $38,000 per recipient per year by splitting gifts. Over a decade, that moves substantial wealth to a Class C heir tax-free.
• Adoption. A legally adopted person is treated as a child — Class A — for Kentucky inheritance tax. Adult adoption is legal in Kentucky and is occasionally used to convert a stepchild, long-term partner’s child, or chosen-family member into a fully exempt heir. This is a serious legal step with non-tax consequences; treat it as one.
• Life-insurance rerouting. As noted, named-beneficiary life insurance is exempt (KRS 140.030). Funding a policy and naming the Class C heir as beneficiary delivers proceeds free of Kentucky inheritance tax.
• Charitable structuring. Transfers to qualified charities are exempt. A charitable remainder trust can pay an income stream to a beneficiary for life with the remainder to charity — converting what would have been a 16% Class C hit into a split benefit.

Notice what is NOT on the list: setting up a revocable trust, retitling the brokerage account as “transfer on death,” or moving the will to a different attorney. None of those touch the class-based tax.

Second worked example: $100,000 to a niece vs. through her father

Tom in Louisville wants to leave $100,000 to his niece, Dana. Nieces are Class B. After the $1,000 exemption, $99,000 is taxable. Running the Class B brackets — 4% on the first $10,000, 5% on the next $10,000, 6% on the next $10,000, 8% on the next $15,000, 10% on the next $15,000, 12% on the next $39,000 — lands at $8,880 in Kentucky inheritance tax. Dana nets about $91,120.

Now flip the routing. Tom’s brother — Dana’s father — is Tom’s sibling, which makes him Class A and fully exempt. If Tom leaves the $100,000 to his brother (with a clear, non-binding understanding that it benefits Dana), Kentucky takes $0, and the brother can then gift Dana up to $19,000 per year under IRC §2503(b) free of federal gift tax, or simply pass it along. The relationship between Tom and the named beneficiary is what the tax keys on — so naming the Class A father instead of the Class B niece erases the full $8,880 of tax on the same $100,000.

How Kentucky compares to the other inheritance-tax states

Only five states still impose an inheritance tax, and Kentucky’s 16% top rate ties for the highest. Knowing where Kentucky sits helps if you or your heirs have ties to more than one state — the tax is generally owed to the state where the decedent was domiciled (and on Kentucky-situated real estate), not where the heir lives.

The standout: Kentucky and New Jersey fully exempt children, but Pennsylvania taxes even a child at 4.5%. So a Kentucky resident leaving everything to children pays nothing — the same plan in Pennsylvania would owe 4.5% on the full inheritance. Kentucky is harsh on distant heirs and generous to close ones.

Who files, and when

The Kentucky inheritance tax return is due 18 months after the date of death, with a 5% discount for payment within 9 months. If every beneficiary is Class A, no return is generally required because no tax is due — though a short-form affidavit of exemption is sometimes filed to close the estate cleanly. When Class B or C beneficiaries exist, the personal representative files Form 92A200 (or the simplified 92A205) with the Kentucky Department of Revenue and the tax is paid from the estate or the beneficiary’s share, depending on how the will allocates it.

• All Class A: generally no return, $0 tax.
• Any Class B or C: return due within 18 months; 5% discount if paid within 9 months.
• Specify who bears the tax in the will. Absent direction, the tax is charged against each taxable beneficiary’s share — which can quietly shrink a Class C bequest.

The decision lever

Kentucky inheritance tax is not about how much you leave — it is about who you name. If your plan routes assets to Class B or Class C beneficiaries, you have a 4%–16% problem that no trust or beneficiary-designation paperwork will solve after death. The moves that work all happen while you are alive: gift $19,000 per year per recipient to drain the estate, name a Class A relative who will share with the person you actually intend to benefit, use exempt life insurance, or formalize the relationship through adoption. Margaret’s $28,620 question has a clean answer — but only if she resolves it before, not after, the account passes.