An investor who has held commercial or rental property in the Louisville area for decades is often sitting on a large, unrealized gain, and how that property passes to heirs matters as much as how it's managed while alive. Estate tax real estate planning brings together federal estate tax exposure, Kentucky's own inheritance rules, and the income tax treatment heirs will face, three separate systems that don't always point the same direction.
Federal Estate Tax Exposure
The federal estate tax only applies above a substantial lifetime exemption, which is indexed for inflation and has moved considerably over the past decade. Most individual property owners never approach the threshold, but those with a larger portfolio, particularly one built through prior exchanges into progressively larger holdings, should have a current number rather than an old assumption, since the exemption is scheduled to change and Congress has adjusted it before.
Kentucky's Inheritance Tax
Kentucky imposes its own inheritance tax, separate from the federal estate tax, though the rate and exemption depend heavily on the heir's relationship to the deceased. Transfers to a spouse, children, and certain close relatives are exempt or taxed at lower rates, while transfers to more distant relatives or unrelated parties can face meaningfully higher rates. This state-level layer is easy to overlook when the planning conversation focuses only on the federal threshold.
Step-Up in Basis: The Quiet Advantage
When real estate passes to an heir at death, its basis generally resets to fair market value as of the date of death, erasing the capital gains and depreciation recapture that would have been owed had the original owner sold during life. A heir who inherits a building near Prospect that the owner held for thirty years can often sell shortly after with little or no capital gains tax, because the gain accumulated during the decedent's lifetime simply disappears for income tax purposes.
Where Lifetime Deferral Fits the Plan
Because step-up erases the deferred gain at death, some long-term owners use a 1031 exchange repeatedly during their lifetime, deferring tax on each sale, then let the final property pass to heirs with a full basis reset rather than ever paying the accumulated tax themselves. This approach, sometimes summarized as swap until you drop, isn't right for everyone; it depends on whether the owner wants to keep managing real estate into later years, and it should be coordinated with an estate attorney alongside any exchange planning, not treated as a substitute for one.
Entity Structure and Multiple Heirs
Property held directly by an individual passes differently than property held inside an LLC with multiple family members as members, and the exchange rules add another layer since only the taxpayer who sold the relinquished property can generally be the one who takes title to the replacement property. A parent near Anchorage planning to eventually divide a portfolio among several children should think through entity structure well before a final exchange, since restructuring ownership shortly before a sale can create its own complications with how the transaction is later viewed.
Some owners use a family LLC to hold property jointly while still alive, then plan gifting or buyout provisions for when the estate transfers, which keeps the real estate itself intact rather than forcing a sale to divide value among heirs who may not all want to stay in the business.
Common 1031 Exchange Questions
Does a 1031 exchange affect estate tax exposure?
Not directly. Deferring capital gains tax through an exchange doesn't change the property's value for estate tax purposes; the property is still counted at its fair market value in the estate. What it does affect is the income tax basis heirs receive.
What happens to deferred gain from past exchanges when I die?
The deferred gain generally does not carry forward as a tax owed by the estate or the heirs. Because of the step-up in basis rule, the accumulated deferred gain from a lifetime of exchanges is typically eliminated for income tax purposes when the property passes at death.
Do heirs pay tax immediately when they inherit real estate?
No, inheriting property itself is not a taxable event for income tax purposes. Tax is only triggered if and when the heir later sells, and the step-up in basis means the taxable gain is measured from the date-of-death value forward, not from the original owner's purchase price.
Is Kentucky's inheritance tax the same as the federal estate tax?
No, they are separate taxes with different exemption structures. Kentucky's inheritance tax depends on the heir's relationship to the deceased, while the federal estate tax applies above a much higher lifetime exemption regardless of who inherits.
Should I involve an estate attorney before doing another 1031 exchange?
It's worth the conversation, especially for owners with a larger portfolio or a specific plan for how property should pass to heirs, since exchange timing, entity structure, and estate documents all interact and are easier to coordinate before a transaction than to unwind afterward.
