Credit Shelter Trust

A couple may write an estate plan that places some assets into a trust when the first spouse dies, with the amount often tracking the available estate-tax exclusion. Other property may pass to the surviving spouse outright or under a different marital arrangement.

The surviving spouse can be given income or limited access to principal, though broad ownership or control may change the intended estate-tax result, and the remainder beneficiaries typically receive what remains after the spouse's interest ends. A key purpose is to use an exclusion that might otherwise go unused, especially in plans written before portability became available or where other planning goals matter.

Portability and current exclusion levels can change the comparison, so never assume an older formula remains suitable without reviewing the current law and estate values. The surviving spouse may also have less flexibility to change beneficiaries of the trust than with outright-owned assets, which can protect children from an earlier marriage but be inconvenient if family needs later change.

Funding is not merely naming a trust in a will. The executor may need to identify, value and transfer particular assets under the document and local probate procedure, and if the trust is underfunded or property is left elsewhere, the intended division may not occur.

A formula based on the applicable exclusion can also produce a surprising allocation if asset values or tax law change, for instance sending more into the trust than the survivor expected to control directly, so review how it defines the funding date, deductions and available exclusion. Assets in the trust may appreciate after the first death.

Depending on the design and law, that growth may not be included in the survivor's taxable estate, but income taxes, basis rules and administration costs can offset an estate-tax advantage in some cases. A trustee manages assets, distributions and records under the governing terms, and may be a spouse or another person, subject to limits.

Administrative work and possible conflicts between current and remainder beneficiaries deserve attention before choosing the structure. When the first spouse dies, the executor and adviser should read the actual instrument before filing elections or moving assets.

A QTIP election for a marital trust and the intended credit shelter allocation serve different roles, and an error can be difficult to repair later. The IRS private ruling cited here illustrates a will that directed an exclusion-sized amount to a credit shelter trust and the balance to a marital trust, and it discusses a mistaken transfer and QTIP election in a narrow set of facts, so it is not general authority that any trust will receive the same treatment.