Connecticut Estate & Inheritance Tax — Best Proven Guide (2026)

✓ Verified June 2026

This guide explains Connecticut estate tax and inheritance tax in plain English — whether Connecticut taxes your estate, who pays, the exact exemptions, and how the federal estate tax fits in for 2026. All figures verified as of June 2026.

Connecticut Estate & Inheritance Tax at a Glance

Here is exactly how Connecticut estate tax and inheritance tax work:

Spousal portability (federal): Federal portability allows a surviving spouse to use the deceased spouse’s unused federal exemption by filing IRS Form 706. Connecticut does NOT offer state-level portability — each spouse’s 15000000 state exemption is use-it-or-lose-it.

Gift tax: YES — Connecticut is the only state with its own gift tax. It shares the same 15000000 lifetime exemption with the estate tax (combined, not separate). Gifts above the federal annual exclusion of 19000 per recipient count against this lifetime exemption. The gift tax rate is also 12 percent.

Estate Tax vs Inheritance Tax: The Difference

People use these two terms as if they mean the same thing, but they are different taxes that work in opposite ways. An estate tax is charged to the estate itself before anything is handed out — the estate pays it, then the heirs receive what is left.

An inheritance tax is charged to the people who receive the money — each heir may owe tax on their share, and the rate often depends on how closely related they were to the person who died.

This matters for Connecticut families because the two taxes are set by different rules. The federal government only has an estate tax, never an inheritance tax. A state can have an estate tax, an inheritance tax, both, or — as in most states — neither. When you know which one (if any) applies in Connecticut, you know exactly who would be responsible for paying.

How the Federal Estate Tax Works

No matter which state you live in, the federal estate tax sets a very high exemption, which is the amount an estate can be worth before any federal tax is owed. Estates below that exemption owe no federal estate tax at all, and the overwhelming majority of estates fall well below it.

For 2026, the federal exemption is $15 million per person — a level the One Big Beautiful Bill Act made permanent in 2025 and indexes for inflation — so the figure in the table above is current and is not scheduled to drop.

Married couples get an extra advantage. Anything left to a surviving spouse passes free of federal estate tax under the unlimited marital deduction, and a surviving spouse can often carry over the unused portion of their late spouse’s exemption — a feature called portability. In practice this means a married couple can shield roughly double the individual exemption before federal estate tax ever enters the picture.

Who Actually Owes Estate Tax in Connecticut

With a 15000000 exemption matching the federal level, the vast majority of Connecticut families will owe no estate tax. Married couples may shelter up to 30000000 combined at the federal level through portability, but Connecticut has no state portability — couples with estates above 15000000 should consider credit shelter trusts or other planning. Individuals and families with estates approaching or exceeding 15000000 should consult a licensed Connecticut estate planning attorney.

Other Connecticut estate/inheritance tax rules: Connecticut’s estate tax exemption is tied to the federal exemption amount and adjusts automatically when the federal amount changes. The combined estate and gift tax liability is capped at 15000000 per estate. Connecticut uses a combined estate and gift tax return (Form CT-706/709). Connecticut is the only state in the nation that levies its own state-level gift tax.

There is no sunset provision on the current exemption level following the One Big Beautiful Bill Act signed July 4 2025 which made the federal increase permanent.

What This Means for Your Connecticut Family

The bottom line for Connecticut: most families still owe little or nothing, but because Connecticut has a state-level death tax, it is worth checking the exemption and rate in the table above against the size of the estate. If the estate is close to or above the Connecticut threshold, a licensed tax professional in Connecticut can help you plan ahead and reduce what is owed.

Either way, planning ahead helps. Keeping beneficiary designations current, holding property in the right way, and — for larger estates — talking to a tax professional can keep more of what you have built in your family’s hands. None of this requires owing estate tax; it is simply good estate planning.

It also helps to know what an estate tax does not touch. Life insurance paid to a named beneficiary, retirement accounts with named beneficiaries, and assets held in certain trusts generally pass outside the taxable estate, which is one reason these tools are so common in planning.

Day-to-day inheritances that most Connecticut families receive — a home, a bank account, a car, personal belongings — are almost never large enough to trigger any estate tax at all. If you are unsure where your family stands, the safest step is a short conversation with a licensed Connecticut estate or tax professional who can look at the actual numbers.

Understanding Connecticut Estate and Inheritance Tax

Worrying about Connecticut estate tax is common, but most families owe nothing. Whether Connecticut estate tax applies depends on the size of the estate and whether Connecticut levies an estate tax, an inheritance tax, or neither. The table above shows the exact exemptions and rates, plus the current federal exemption, so you can see where you actually stand on Connecticut estate tax.

If your estate is large enough that Connecticut estate tax could apply, a licensed tax professional in your state can help you plan.

Official Connecticut Sources & Resources

• Connecticut Department of Revenue: https://portal.ct.gov/drs/individuals/individual-income-tax-portal/estate-and-gift-taxes/tax-information
• Connecticut Estate Tax Statute: https://law.justia.com/codes/connecticut/title-12/chapter-217/section-12-391/
• Internal Revenue Service — Estate Tax: irs.gov
• Cornell Legal Information Institute: law.cornell.edu/wex

This Connecticut estate-tax guide was last verified against official sources in June 2026. Tax laws and exemptions change yearly — verify with your state revenue department or a licensed tax professional.

More Connecticut Wills & Probate Guides

• Connecticut Wills & Estate Planning
• Connecticut Probate Process
• Dying Without a Will in Connecticut
• Connecticut Small Estate Affidavit
• Connecticut Living Trust
• Probate Cost Calculator
• All 51 States

Disclaimer: This guide is informational only and is not legal or tax advice. Estate, probate, and tax laws change and vary by state and county. Verify current rules and dollar figures with your state’s court, statute, or a licensed attorney or tax professional before acting. For urgent matters like an active probate or a tax deadline, consult a licensed professional in your state right away.