MBE Rules · Wills, Trusts & Estates

Exercise of Powers

Exercise of powers (Cal. Prob. Code § 640s)

The rule

A residuary clause alone does not exercise a power requiring specific reference; blanket-exercise clauses reach general powers unless the donor required express reference, and California requires substantial compliance with the donor's formalities.

In plain English

A residuary clause in a will does not automatically exercise a power of appointment unless it specifically mentions that power. In California, if a donor has set formal requirements for exercising a power, the will must substantially comply with those requirements to be valid.

Worked example

Alice's will includes a residuary clause that states, 'I leave all my remaining assets to my children.' However, she had a specific power of appointment over a trust that required her to explicitly mention it. Since she did not reference the trust, her children do not inherit those assets from the trust.

Memory hook

Residue without reference means no power exercised.

The trap

Exams often present scenarios where students might assume a residuary clause suffices to exercise a power, leading to incorrect conclusions.

How examiners test it

Questions typically involve a will's language and require candidates to analyze whether a power of appointment was properly exercised based on the specific wording used.

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