Capitalize “Will” when you’re using it as part of the formal title of a specific person’s Last Will and Testament, or as a shortened reference to that same document. Leave “will” lowercase when you’re talking about wills in general, using “will” as an auxiliary verb, or referring to a person’s resolve. The rule tracks a single question: does the word name one particular legal instrument, or describe a category?
When to Capitalize
“Last Will and Testament” is the formal title of a specific legal document, so it follows the same capitalization rules as any other proper name, the way you’d capitalize “Declaration of Independence” or “Treaty of Versailles.”1U.S. Government Publishing Office. U.S. Government Publishing Office Style Manual – Chapter 3 – Capitalization Rules Every major word in the title takes a capital: “Margaret’s Last Will and Testament was filed with the probate court.”
The same logic covers shortened references to that same document. “The Will was admitted to probate” capitalizes “Will” because the reader understands you mean that particular person’s will. Drop the capital the moment you shift to generic discussion: “Everyone should consider drafting a will.”
“Will” as a Defined Term Inside the Document
Inside the will itself, attorneys almost universally capitalize “Will” as a defined term.2LawProse. LawProse Lesson 456 Marking Defined Terms The opening clause usually reads something like: I, Margaret Smith, declare this to be my Last Will and Testament (“Will”). From that point forward, every reference to “this Will,” “the Will,” or “my Will” uses a capital W.
The capitalization signals to the reader that the word carries a specific, defined meaning rather than its ordinary English sense. When you refer to a will from a different document or case, the capital drops: “the will in the Henderson estate” stays lowercase because you aren’t using your own document’s defined term.3National Association for Legal Support Professionals. Grammar Nuggets: Capitalization in Legal Documents
When “Will” Stays Lowercase
Most appearances of “will” in writing shouldn’t be capitalized. The word does several jobs in English, and only the proper-noun usage earns a capital.
- Auxiliary verb indicating future tense: “She will inherit the house.” “They will contest the document.”
- Common noun meaning resolve or desire: “His will to fight the diagnosis inspired the family.” “She imposed her will on the negotiations.”
- Generic reference to the legal instrument: “You should update your will every few years.” “A holographic will is handwritten by the testator.”
A simple test: could you swap in the person’s name and the full title and have the sentence still make sense? If “Margaret’s Last Will and Testament” fits, capitalize. If the sentence is about wills as a concept, don’t.
Codicils and Other Estate Documents
The same rules apply to related instruments. A codicil, which modifies an existing will without replacing it, follows identical conventions. Capitalize it in the title: “First Codicil to the Last Will and Testament of Margaret Smith.” Capitalize it as a defined term inside the document: “This Codicil revokes Article III of the Will.” Keep it lowercase in generic discussion: “She added a codicil two years later.” Trusts, powers of attorney, and healthcare directives work the same way.
Keep It Consistent
Consistency matters more than any single capitalization choice. If you capitalize “Will” as a defined term on page one, capitalize it every time throughout the document. Switching between “the Will” and “the will” within the same instrument creates ambiguity about whether you mean the defined document or wills in general.
No single style manual governs legal capitalization, and conventions vary between firms and jurisdictions. The Gregg Reference Manual notes there is no uniform standard, though common practice capitalizes the document type and parties within the instrument you’re drafting.3National Association for Legal Support Professionals. Grammar Nuggets: Capitalization in Legal Documents The U.S. Government Publishing Office Style Manual capitalizes full and short titles of formal legal instruments, treating them the same as titles of acts or published works.1U.S. Government Publishing Office. U.S. Government Publishing Office Style Manual – Chapter 3 – Capitalization Rules When in doubt, pick a convention and apply it uniformly from the first page to the last.