first come, first serve(d)

Short answer: write "first come, first served." The phrase compresses the passive idea "those who come first are served first"; "served" is the past participle that completes that thought. Hyphenate when the phrase directly modifies a noun: "first-come, first-served policy."

Below: the quick rule, the grammar behind it, clear hyphenation and spacing guidance, many wrong→right examples (work, school, casual), and ready-to-use rewrites you can paste into emails, signs, or policies.

Quick answer

Use "first come, first served." Hyphenate as "first-come, first-served" when the phrase functions as a compound adjective before a noun.

Standalone or after the noun: "Tickets will be distributed first come, first served."
Before a noun (compound modifier): "We have a first-come, first-served policy."
Avoid "first come, first serve" in formal writing, official notices, and legal text.

How the grammar works: past participle, not the base verb

The phrase is a condensed passive clause: "Those who come first are served first." Dropping words leaves the past participle "served" to signal the passive action. Swapping in the base verb "serve" breaks that structure and sounds wrong in writing.

Think: "are served" → shortened to "first served."
If you would think "they are served," use "served" in the short form.

Wrong: "Tickets will be handed out first come, first serve."
Right: "Tickets will be handed out first come, first served."

Hyphenation and punctuation: when to hyphenate

Hyphenate the full compound modifier that appears before a noun so readers parse it as a single adjective: "first-come, first-served policy." When the phrase follows the noun or stands alone, use commas: "Seats are assigned first come, first served."

Modifier before noun: "a first-come, first-served policy."
After noun or standalone: "We distribute prizes first come, first served."

Wrong: "We operate on a first come first served basis."
Right: "We operate on a first-come, first-served basis."

Spacing and commas: small details that matter

Use a comma between the two clauses in the standalone form: "first come, first served." Keep one space after commas and none around hyphens in a compound modifier. Tight, consistent spacing avoids the appearance of typos.

Correct spacing: "first come, first served."
Compound modifier: "first-come, first-served policy" (no spaces around hyphens).

Wrong: "first-come,first-served" (missing space after comma).
Right: "first-come, first-served".

Real usage and tone: when to be strict

Casual speech tolerates "first come, first serve," but public-facing text, official rules, and anything with liability should use the correct form. When clarity matters, prefer the hyphenated modifier for policies and the comma form for distribution statements.

Casual: acceptable in speech, but avoid in printed notices.
Official: use "first come, first served" or "first-come, first-served" depending on placement.

Usage (casual): "Take the free samples-first come, first serve!" (understandable but nonstandard)
Usage (formal sign): "Seats are limited and will be distributed on a first-come, first-served basis."
Usage (staff email): "Our laptop checkout follows a first-come, first-served policy."

Examples: quick wrong → right pairs (mixed contexts)

Compact corrections you can copy directly.

Wrong: "Free samples: first come first serve."
Right: "Free samples: first come, first served."
Wrong: "Early bird seats - first come, first serve."
Right: "Early bird seats - first come, first served."
Wrong: "Claim swag first come first serve."
Right: "Claim swag first come, first served."
Wrong: "Gift cards are limited - first come first serve."
Right: "Gift cards are limited - first come, first served."
Wrong: "Admission is first come first serve."
Right: "Admission is first come, first served."
Wrong: "Seats are first come first serve."
Right: "Seats are first come, first served."

Work examples: emails, events, and policies

At work, the hyphenated form is ideal for policy titles; the comma form works for announcements and instructions.

Wrong (email invite): "Lunch vouchers will be distributed first come, first serve - arrive early!" Right: "Lunch vouchers will be distributed first come, first served-arrive early!"
Wrong (HR memo): "Equipment is issued on a first come first serve basis." Right: "Equipment is issued on a first-come, first-served basis."
Wrong (policy title): "First Come First Serve Equipment Policy" Right: "First-Come, First-Served Equipment Policy"

School examples: syllabi, sign-ups, and handouts

Schools should use the standard form on syllabi, registration pages, and official signs to avoid confusion.

Wrong (syllabus): "Office hours appointments are first come, first serve." Right: "Office hours appointments are first come, first served."
Wrong (club sign-up): "Tryouts are first come first serve." Right: "Tryouts are on a first-come, first-served basis."
Wrong (registration): "Lab slots are given first come first serve." Right: "Lab slots are given on a first-come, first-served basis."

Casual examples: signs, social posts, and quick speech

Even brief signs and posts read better with the correct form; it's familiar and concise.

Wrong (yard sale sign): "Free plants - first come first serve!" Right: "Free plants - first come, first served!"
Wrong (tweet): "We're giving away promo codes first come, first serve." Right: "We're giving away promo codes - first come, first served."
Wrong (group chat): "Dinner spots are first come first serve." Right: "Dinner spots are first come, first served."

How to fix your sentence: checklist and ready rewrites

Checklist: 1) Is the phrase before a noun? Yes → hyphenate the compound modifier. 2) If it follows the noun or stands alone → use commas and "served." 3) Fix spacing and place a comma between the two halves.

Paste-ready rewrites:

Short sign: "Free T-shirts - first come, first served."
Policy text: "Parking spaces will be assigned on a first-come, first-served basis."
Adjective use: "We enforce a first-come, first-served seating arrangement."
Email reminder: "Reminder: Projectors are available on a first-come, first-served basis."
Concise announcement: "Seats limited. First come, first served."

Memory trick and related mistakes to watch for

Memory trick: say the full sentence "Those who come first are served first." If that sounds right, use "served" in the shortened phrase.

Watch similar errors with past participles and hyphenation in other compound modifiers-e.g., "well-known author" (hyphenate before a noun) versus "the author is well known."

Mnemonic: come → are served → short: first come, first served.
Hyphenation trap: Wrong: "We have a well known first come, first serve policy."
Right: "We have a well-known, first-come, first-served policy."

FAQ

Is it correct to say "first come first serve"?

No. The standard form is "first come, first served." "Served" is the past participle that completes the passive meaning.

Should I hyphenate "first come, first served"?

Hyphenate when the phrase directly modifies a noun: "first-come, first-served policy." If it follows the noun or stands alone, use commas: "Tickets will be distributed first come, first served."

Can I use "first come, first serve" in informal speech or texts?

People often say it informally, and listeners understand. For public-facing or official writing, use the standard "first come, first served."

How do I rewrite a sentence with the incorrect form?

Decide placement: before a noun → "first-come, first-served [noun]"; after a noun or standalone → "..., first come, first served." Example: "Seats are first come first serve" → "Seats are first come, first served."

Why do people say "first come first serve" even if it's wrong?

It's an informal shortcut and a common mishearing. The rhythm of speech and repeated misuse on signs spread the variant. It remains nonstandard in formal writing.

Want a quick fix for your sentence?

Copy one of the rewrites above into your email, sign, or syllabus. When unsure, use "served," and hyphenate when the phrase comes before a noun. For automated help, paste your sentence into a grammar checker to flag "first come, first serve" and suggest the correct form.