Glossary

Codicil: Plain-English Meaning

Define Codicil in plain English, see where it appears, why it matters, related terms, and what to verify under state law.

Last updated August 13, 2026 · Educational publication · Editorial policy

Plain-English meaning

Codicil

A document that amends an existing will without replacing the entire will.

Why the term matters

A codicil must generally satisfy will-execution rules and should be read together with the original will and earlier codicils.

Do not confuse it with

A codicil changes a will; a trust amendment changes a trust. A new will may revoke earlier wills and codicils.

Where you may see it

The term may appear in a signed will or trust, a court petition or order, a deed, an account or policy form, a fiduciary report, or correspondence from a tax or benefit agency. Read the defined-terms section and the complete sentence before deciding what role or action it describes.

Records that give the term context

  • the current signed document and every amendment
  • ownership, beneficiary, court, and account records connected to the issue

What to verify

  • Which document, contract, court order, or statute controls?
  • Who has authority now, and what evidence proves it?

Example without case advice

If a notice uses “codicil,” first identify the person or property the word refers to, the document supplying the definition, and the deadline or decision attached to it. The same word can carry a different procedural effect in a trust, probate file, tax form, or account contract.

Sources to verify

Use the controlling court, agency, statute, provider record, or governing document before relying on a general explanation.