Kentucky's individual income tax rate is not set by a vote each year. It falls automatically when the state's finances meet two statutory conditions, and it stays where it is when they do not.
For the year ended 30 June, General Fund revenue came in more than a billion dollars short of the level needed to move the rate from 3.5 percent to 3 percent in 2028. That is the second consecutive miss and the third in four years.
The state also missed a second, lower threshold — one the legislature wrote in 2025 specifically to make these cuts easier to reach, permitting a quarter-point reduction on a smaller surplus.
The test is better drafted than most
It is worth reading the conditions, because the second one is unusually rigorous and almost never discussed.
The first is a reserve test: the budget reserve trust fund must be at least ten percent of General Fund revenue at year end. That is a cushion requirement, and it is the kind of thing most states have in some form.
The second is the interesting one. Revenue must have exceeded General Fund spending even if the tax rate had been a full percentage point lower. That is not a test of whether the state had a good year. It is a test of whether the state could have afforded the tax cut it is about to make, run against the year that just closed.
Most automatic-cut mechanisms fail precisely because they lack that clause. They trigger on a surplus, cut the rate, and discover in the following biennium that the surplus was cyclical and the cut was permanent. Kentucky's version asks the state to demonstrate solvency at the lower rate before adopting it, which is the correct sequencing and is the part currently failing.
Missing an easier test is the informative result
If a state misses a demanding threshold, the reasonable inference is that the threshold is demanding.
If a state misses a threshold, has the legislature lower it in response, and then misses the lowered one, the threshold is not the variable. Revenue is.
That sequence is worth stating plainly because the 2025 amendment was itself an answer to this problem — lawmakers frustrated that the triggers were becoming harder to reach wrote a smaller step into the law. The smaller step has now also gone untaken. Whatever one thinks about the merits of cutting the rate, the mechanism is reporting the same finding twice at two different sensitivities, which is roughly what a well-designed instrument is supposed to do.
What a trigger is actually for
The point of writing a tax cut into a conditional formula is to take the decision away from the moment. A legislature in a good year has every incentive to cut and no incentive to model the bad year; a formula written in advance binds that legislature to a rule it agreed to when it did not know the answer.
The formula is now returning an answer its authors do not want, which is the only circumstance in which a formula has any value at all. A rule that only ever confirms what you intended is not a constraint; it is a description.
So the interesting question in Frankfort is not whether revenue recovers. It is whether the response to a third miss in four years is to accept the answer, or to lower the bar again — because the second option is available, has already been used once, and converts the mechanism into a formality on a schedule.
The wider point about automatic fiscal policy
Conditional triggers have spread across state tax codes over the last decade, and they are usually described as a discipline. They are a discipline only in the direction they were written to go.
Nothing in Kentucky's mechanism raises the rate if reserves fall. The formula is a ratchet: it cuts when conditions are met and holds when they are not, and the accumulated effect over a decade of ordinary economic variation is downward regardless of what happens on the spending side. That is a policy choice, and a legitimate one, but it is not neutrality and it should not be described as automatic in a way that implies it is.
Meanwhile the spending side is not on a formula at all. It is on the pattern this desk has been documenting all week — budget gaps that bundle three different problems under one word, programmes rationed by queues rather than by published criteria, and an interest bill that arrives every year without anyone being sent one.
The number to watch
Not next year's receipts. Watch whether a third bill appears in the 2027 session lowering the threshold again.
If it does, Kentucky will have established that the trigger binds only when it agrees, which is the same as not having one — and the state will have spent four years building a mechanism whose function is to be amended whenever it works.
The shortfall of more than $1bn against the threshold for cutting Kentucky's individual income tax rate from 3.5 to 3 percent in 2028; the two statutory conditions requiring the budget reserve trust fund to equal at least 10 percent of General Fund revenue and revenue to have exceeded spending even at a rate one percentage point lower; the fact that this is the second consecutive miss and third in four years; and the 2025 legislation adding a lower threshold permitting a 0.25 point reduction on a smaller surplus, which was also missed, are as reported by Louisville Public Media and its partner stations on 4 September 2026 and by the Kentucky Center for Economic Policy. The analysis is our own.
Topics nationalstate and localtaxespublic financebudgets
