RulesofCivilProcedure.com Civil Procedure · Every State

Rule 84.06.Form of Briefs.

Part II · Rule 84: Procedure in All Appellate Courts · Last amended January 1, 2024 · Last verified July 22, 2026

In one sentenceRule 84.06 caps the length of appellate briefs by word count — 31,000 words for the appellant’s opening brief, 27,900 for the respondent’s brief, and 7,750 for a reply brief — and requires a signed certificate of compliance stating the word count and how the brief was served.

Full Text of Rule 84.06

Text sizeJump to: (a) (b) (c)

(a) Size — Type — Form. A brief shall conform to Rule 84.03(b) in addition to the requirements of this Rule.
(b) Length. Except as provided by local court rules, the length of briefs shall be as follows: Appellant's initial brief and all briefs in a cross appeal except the reply brief shall not exceed 31,000 words. Respondent's brief shall not exceed 27,900 words; Appellant's reply brief shall not exceed 7,750 words. All material contained in the brief except the cover, any certificate required by Rule 84.06(c), signature block, and appendix count toward the word limitations.
(c) Certification. A brief submitted under this Rule 84.06 shall contain a certificate of compliance by the lawyer or self-represented person that:
(1) Includes the information required by Rule 55.03;
(2) Includes information as to how the brief was served on the opposing party, whether pursuant to Rule 43.01(c) or Rule 103.08;
(3) States that the brief complies with the limitations contained in Rule 84.06(b); and
(4) States the number of words in the brief. The person preparing the certificate may rely on the word count of the word-processing system used to prepare the brief.

Amendment History

Adopted June 13, 1979, eff. Jan. 1, 1980. Amended July 27, 1979. Amended Aug. 16, 1983, eff. July 1, 1984; Amended June 24, 1986, eff. Jan. 1, 1987; Amended June 1, 1993, eff. Jan. 1, 1994; Amended May 27, 1999, eff. Jan. 1, 2000; Amended May 26, 2000, eff. Jan. 1, 2001; Amended May 23, 2001; Amended Jan. 1, 2002; Amended June 21, 2002, eff. Jan, 1, 2003; Amended Dec. 23, 2003, eff July 1, 2004; Amended June 27, 2006, eff. January 1, 2007; Amended June 26, 2007, eff. January 1, 2008; Amended Dec. 18, 2007, eff. July 1, 2008; Amended May 19, 2016, eff. Jan. 1, 2017; Amended Jan. 1, 2018; Amended eff. January 1, 2019; Amended Mar. 7, 2022, eff. Jan 1, 2024.

Plain-English Summary

Beyond the physical formatting rules it borrows from Rule 84.03(b), Rule 84.06 controls how long a brief can be. Except where local court rules provide otherwise, an appellant’s initial brief and every brief in a cross appeal other than the reply brief may run up to 31,000 words; a respondent’s brief is capped at 27,900 words; and an appellant’s reply brief is capped at 7,750 words. Everything in the brief counts toward that limit except the cover, any certificate required by the rule, the signature block, and the appendix.

Every brief filed under this rule must include a certificate of compliance signed by the lawyer or self-represented filer. That certificate has to include the information Rule 55.03 requires, state how the brief was served on the opposing party — whether under Rule 43.01(c) or Rule 103.08 — confirm that the brief complies with the word limits, and state the actual word count, which the person preparing the certificate may take directly from the word-processing program used to draft the brief.

Frequently Asked Questions

What is the word limit for an appellant’s opening brief?

31,000 words, unless a local court rule sets a different limit.

What are the limits for a respondent’s brief and a reply brief?

27,900 words for the respondent’s brief and 7,750 words for the appellant’s reply brief.

Does the appendix count toward the word limit?

No, nor do the cover, any required certificate, or the signature block.

What must the certificate of compliance say?

It must include the information required by Rule 55.03, state how the brief was served, confirm compliance with the length limits, and state the brief’s word count.

Can I just use my word processor’s word count for the certificate?

Yes, the person preparing the certificate may rely on the word-processing system’s count.

Do local court rules ever change these word limits?

Yes, the rule’s limits apply except as local court rules provide otherwise.

Source & verification. Rule text and amendment history are reproduced verbatim from the Missouri State & Federal Court Rules, adopted by the Supreme Court of Missouri. Last verified July 22, 2026. · Official source
Also known as: Missouri appellate brief word limitcertificate of compliance appellate briefreply brief length Missouribrief word count certificate