Estate Tax Proration in Connecticut
Estate taxes must be paid from somewhere. The question is who bears the burden: all beneficiaries proportionally, or specific beneficiaries as directed by the decedent’s will. Connecticut’s default rule, codified at CGS 12-401, is equitable proration, meaning each beneficiary pays a share of the tax proportional to the value of what that beneficiary receives. The will can override this default, and often does.
The Default Rule
Under CGS 12-401(a), when a fiduciary has paid estate taxes (whether Connecticut or federal), the tax is prorated among the persons interested in the estate in proportion to the value of property each person receives. The statute applies to both the Connecticut estate tax under Chapter 217 and the federal estate tax.
The proration is “as near as may be” proportional. Allowances are made for exemptions and deductions used in computing the tax. If the estate includes property that qualifies for the charitable deduction or the marital deduction, those deductions reduce the tax and the remaining tax is apportioned only among the taxable shares.
This default rule applies unless the decedent directs otherwise. The statute expressly states that the proration is used “except when a testator otherwise directs in his will or when, by written instrument executed inter vivos, direction is given for apportionment within the fund of taxes assessed upon the specific fund dealt with in such inter vivos instrument.”
Overriding the Default by Will
Most well-drafted wills include a tax clause that specifies how estate taxes are to be paid. Common approaches:
Taxes paid from the residuary estate. The will directs that all estate taxes, regardless of source, be paid from the residuary estate. This protects specific bequests and non-probate transfers from tax liability but concentrates the burden on the residuary beneficiaries.
Taxes apportioned as provided by law. The will simply adopts the statutory proration rule. Each beneficiary bears a proportional share.
Taxes apportioned except for certain property. The will may exempt certain bequests from tax (for example, a bequest to a particular child) while apportioning tax among other beneficiaries.
Taxes paid from a specific fund. The will directs that taxes be paid from a designated source, such as a particular investment account or life insurance proceeds.
The will provision must be clear and unambiguous. Courts construe tax clauses strictly. A vague direction to pay “all debts and taxes” from the residuary estate has been held to override the statutory proration in Connecticut, but ambiguous language invites litigation.
Life Estates, Terms of Years, and Remainders
CGS 12-401(a) includes a special rule for temporary interests and remainders. When a trust or other arrangement creates a life estate (or a term of years) and a remainder interest in the same property, the tax on both interests is charged against the corpus of the property, without apportionment between the life tenant and the remainderman.
This means the life tenant does not pay a share of the estate tax out of the income stream, and the remainderman does not pay a separate share. Instead, the tax reduces the overall corpus, which affects both the income generated during the life estate and the property eventually passing to the remainderman.
The Probate Court Process
The fiduciary must include a computation of the proposed tax proration in the administration account or other proceeding filed with the probate court (CGS 12-401(a)). Before the probate judge determines the proration, the court must schedule a hearing and give notice to all interested parties.
There is an exception. Under CGS 12-401(b), if the judge finds that the taxes have been paid and the ultimate burden has been borne by the interested parties in a manner satisfactory to them, as evidenced by their written consent, no proration hearing is required. The court can accept the written consents and approve the distribution without a formal hearing.
Similarly, under CGS 12-401(c), if all parties affected by the proration endorse their approval of the computation, the judge may make the determination ex parte, without a hearing.
In practice, the consent approach is used whenever possible. Formal proration hearings add time and expense to estate administration. If the beneficiaries agree on how the tax burden is allocated, the court will accept their agreement.
Interaction with Marital Deduction Property
Property qualifying for the marital deduction generates no estate tax (the deduction eliminates the tax on that property). Under the proration rule, marital deduction property bears no share of the tax. The tax is allocated entirely to the non-marital (taxable) portion of the estate.
This has practical implications for the surviving spouse. If the estate plan creates both a marital trust and a credit shelter trust, the estate tax attributable to the credit shelter trust is borne by that trust (or by the residuary estate, depending on the will’s tax clause), not by the marital trust.
If the will directs that all taxes be paid from the residuary estate, and the residuary is the source of the credit shelter trust funding, the tax burden falls on the credit shelter trust before it is fully funded. This can reduce the amount passing to the credit shelter trust below the intended exemption amount.
Drafters must coordinate the tax clause with the funding formula. A poorly drafted tax clause can undermine the entire estate tax plan.
Federal Credit for State Taxes
CGS 12-401(a) addresses the interaction between the federal credit for state death taxes and the proration computation. The statute provides that the credit (or, under current law, the deduction) allowed by federal law for state death taxes “shall be assumed to apply pro rata to all parts of the gross taxable estate subject to such federal estate tax.” This ensures that the benefit of the federal deduction for Connecticut estate tax paid is spread proportionally among all beneficiaries, not concentrated in one share.
Practical Impact on Beneficiaries
The choice between statutory proration and a will-directed tax allocation can have dramatic effects on individual beneficiaries.
Consider an estate of $20 million, with $5 million passing to a charity, $5 million in a life insurance trust for one child, and $10 million in the residuary estate for another child. Under statutory proration, the estate tax is allocated among the taxable shares (the charity’s share generates a deduction, so it bears no tax). The life insurance trust and the residuary each bear their proportional share. Under a will direction that all taxes be paid from the residuary, the child receiving the residuary estate bears the entire tax burden, including the tax attributable to the life insurance trust.
The difference can amount to hundreds of thousands of dollars. Clients should understand the practical effect of the tax clause before signing their wills.
Fiduciaries administering estates should identify the applicable tax clause early in administration, compute the proration implications, and consult with tax counsel if the interaction between the tax clause, the estate tax, and the distribution plan is complex.
For the full Connecticut estate tax rate schedule and exemption amounts, see our Connecticut estate tax guide. For how executor duties intersect with tax obligations, see executor and administrator duties.