Why Serif Fonts Remain the Standard for Legal Briefs

If you're preparing a legal brief, the font you choose isn't just a style preference it directly affects how judges, clerks, and opposing counsel read and perceive your argument. The debate around serif vs sans serif fonts for legal briefs comes down to readability, professionalism, and court formatting rules. Pick the wrong one, and your brief could look unprofessional or even get flagged for noncompliance. This article breaks down exactly what you need to know so your next filing reads well and looks right.

What's the difference between serif and sans serif fonts?

Serif fonts have small decorative strokes called serifs at the ends of each letter. Common serif typefaces include Times New Roman, Garamond, and Bookman Old Style. These extra strokes were traditionally believed to guide the eye along lines of text, making them easier to read in long-form printed documents.

Sans serif fonts literally "without serif" have clean, plain letter endings. Arial and Helvetica are two of the most well-known sans serif typefaces. These fonts tend to look more modern and are widely used in digital interfaces and screen-based reading.

In the context of legal writing, this distinction matters because briefs are dense, text-heavy documents. The font you use can influence how comfortable the document is to read over many pages and comfort affects how well your arguments land.

Why do most courts prefer serif fonts for legal briefs?

The majority of court rules and legal style guides have historically favored serif typefaces for filings. Many federal and state courts specify Times New Roman or Century as required or recommended fonts. There are practical reasons behind this tradition.

Serif fonts have long been the standard for book-length and legal-length printed text. The thinking is straightforward: in a 30-page brief set in 12- or 13-point type on standard letter-size paper, serif characters help maintain reading flow across long lines of text. The small strokes at the ends of letters create a subtle visual path that makes it easier to follow dense paragraphs.

Courts also value formality and uniformity. When every filing uses the same typeface family, documents look consistent and professional. This is one reason why law firms continue to default to serif fonts for most legal correspondence and court filings.

Some courts go further and explicitly ban sans serif fonts or mandate a specific serif typeface. Always check local court rules before submitting skipping this step is one of the most common mistakes attorneys make with font selection.

Are there situations where sans serif fonts work for legal documents?

Yes, though they're more limited. Sans serif fonts are increasingly common in certain legal contexts:

On-screen reading: When a judge or clerk is reading your brief on a monitor or tablet, sans serif fonts like Arial can be easier to read at lower resolutions. Screen pixels render the clean lines of sans serif type more crisply than the fine details of serif strokes.
Tables, charts, and exhibits: Sans serif fonts often work better in data-heavy sections where clarity at smaller sizes matters.
Internal firm memos and client communications: For documents that won't be filed with a court, sans serif fonts can give a modern, clean appearance.
Headings and subheadings: Some attorneys use sans serif type for headings within a serif-heavy brief to create visual hierarchy.

That said, using a sans serif font for a court-filed brief without checking the rules first is risky. Even if it reads well on screen, a court clerk may reject it if local rules specify a serif typeface.

Which specific fonts are considered best for legal briefs?

Not all serif fonts are equal when it comes to legal documents. Here are the most commonly recommended options, along with why attorneys choose them:

Times New Roman The default standard. It's required by many courts and is universally recognized. It's not the most distinctive choice, but it's safe and accepted nearly everywhere.
Garamond A popular alternative that's slightly more elegant. Many attorneys prefer it because it's highly readable and uses space efficiently, sometimes allowing a brief to fit within page limits more comfortably.
Century (or Century Schoolbook) Required by some federal courts. It was designed for readability at smaller sizes, making it a strong pick for text-dense filings.
Bookman Old Style A sturdy, widely spaced serif that holds up well in print. It's less common than the others but is accepted by most courts.

For a deeper comparison of how these typefaces perform in real legal documents, see our breakdown of serif vs sans serif fonts in legal briefs.

What size and spacing should you use with your legal font?

Choosing the right typeface is only half the equation. Font size, line spacing, and margins all affect readability and court compliance. Here are the standard guidelines:

Font size: Most courts require 12-point or 13-point text for the body. Some allow 10-point for footnotes. Never go below 10-point it's difficult to read and may violate local rules.
Line spacing: Double-spacing is the norm for most court filings. Some courts allow 1.5 spacing for block quotes.
Margins: Typically 1 inch on all sides, though some courts require 1.5-inch left margins for binding.

A well-formatted brief at 12-point Times New Roman with double spacing and standard margins typically yields about 260–280 words per page. If you're pushing a page limit, switching to a professional serif typeface with slightly different spacing characteristics might give you more room without sacrificing readability.

What common mistakes do attorneys make with fonts in legal briefs?

Font choice seems minor, but these errors show up in court filings more often than you'd expect:

Ignoring court-specific rules: Some courts publish detailed formatting requirements. Failing to follow them can result in rejection or a requirement to refile. Always check the local rules, standing orders, and any judge-specific preferences before finalizing your document.
Using decorative or unusual fonts: Even if a font is technically a serif, using something like Cooper Black or a display typeface looks unprofessional and can hurt credibility.
Mixing too many fonts: Using one font for headings, another for body text, another for footnotes, and another for block quotes creates a cluttered appearance. Stick to one or two complementary typefaces.
Setting body text below 12 points: Some attorneys shrink the font to squeeze more content onto a page. Courts and judges notice this, and it doesn't reflect well on the attorney.
Forgetting about PDF rendering: If you're filing electronically, your font needs to embed properly in the PDF. Stick to standard system fonts to avoid rendering issues.

How should you choose a font for your next legal brief?

Start with the court's rules. If the court specifies a font, your decision is already made. If not, follow this simple process:

Check local rules, circuit rules, and any standing orders. Look for specific font requirements or prohibitions.
Default to a proven serif typeface like Times New Roman, Garamond, or Century. These are safe choices that read well in print and are universally accepted.
Set your body text at 12 or 13 points with double line spacing.
Test readability. Print the first two pages and read them yourself. If you find yourself re-reading sentences, the font or spacing may need adjustment.
Embed the font in your PDF before filing to ensure it displays correctly on any system.

Quick checklist before you file:

☑ Did you check the court's font and formatting rules?
☑ Is your body text 12 or 13 points in an accepted serif typeface?
☑ Are your margins and line spacing compliant?
☑ Did you print a test copy to check readability?
☑ Is the font embedded in the final PDF?
☑ Did you avoid mixing more than two typefaces?

Next step: Pull up the formatting rules for the court where you're filing. Cross-reference them against the font you're using. If you haven't already, read our comparison of serif vs sans serif fonts for legal briefs to see how the top options stack up in practice. Getting this right takes five minutes and prevents a headache later.