Quick Answer
In American English the closing quotation mark goes outside the period, meaning the period sits inside the quotes: She said, "We are done." In British English the closing quotation mark goes inside the period when the period is not part of the original quote, so the period sits outside the quotes: She called the report "incomplete".
Same words, opposite punctuation. It is the single biggest American versus British punctuation difference, and it is enforced rigidly in publishing on both sides.
American English: Always Inside
Chicago, AP, MLA and APA all agree: the period and the comma always go inside the closing quotation mark, in every case. The rule has nothing to do with whether the punctuation was in the original quote. It is a typesetting convention that became standard in the 19th century and has not budged since.
Examples:
- She said, "We are done."
- The lawyer called the deal "questionable."
- "Leave now," he said, "and do not come back."
British English: Logical Placement
British style ("logical" or "sentence" punctuation) puts the period inside the closing quote only if the period was part of the original quoted sentence. Otherwise it goes outside. The closing quote attaches tightly to the quoted material; the period belongs to your sentence and sits outside.
Examples:
- She said, "We are done." (period inside because the original sentence ended)
- The lawyer called the deal "questionable". (period outside because only the word was quoted)
- "Leave now," he said, "and do not come back". (period outside if "back" was not the end of the original sentence)
The Question Mark and Exclamation Rule
Both American and British English agree. Question marks and exclamation points go inside the closing quote only when they belong to the quoted material; otherwise they go outside.
- Belongs to the quote: She asked, "Are we done?"
- Belongs to your sentence: Did she really say "we are done"?
Commas Follow the Period Rule
Commas behave like periods. American style places them inside the closing quotation mark always; British style places them inside only if they were part of the original quoted text.
Colons and Semicolons Outside
Both styles place colons and semicolons outside the closing quotation mark in every case. She called the report "incomplete"; the committee disagreed.
Why the Two Systems Exist
American typesetters in the 19th century preferred periods and commas inside because metal type pieces sat more securely under the protective curl of the closing quotation mark. British compositors favoured the logical approach: punctuation should reflect what the writer actually said, not what looked tidiest in print.
Once the conventions hardened, neither side has been willing to give ground. So the difference survives into the digital age even though typesetting reasons no longer apply.
Which Should You Use
- Follow your publication's style guide. US journals follow Chicago, MLA or APA. UK and most Commonwealth publications follow Oxford or Cambridge style.
- If no guide applies, pick by audience. US-facing default to American style. UK or international audience, default to British.
- Be consistent. A single document that mixes systems looks careless.
- Use the same rule for single quotes if you use them (British uses single quotes for primary speech more often than American).
Bottom Line
American English: closing quote outside the period (period inside quotes), always. British English: closing quote outside the period only when the period was part of the original quote, otherwise inside (period outside quotes). Both styles agree about colons, semicolons, question marks and exclamation points. Pick one system per document and apply it consistently.
More context worth knowing
To round out the answer, here is some additional background on whether the period sits inside or outside the quotation mark. Style guides treat this rule as more than a cosmetic choice. It signals to readers that the writer respects the original source, follows a consistent convention, and understands the difference between American and British practice. When you write about quotes inside outside period in any professional setting, that consistency is what separates a polished page from a draft that distracts the reader.
Editors at major publishers, including university presses, trade magazines, and legal journals, run every manuscript through a style check that flags exactly this kind of issue. If the guidance feels picky, remember that search engines and screen readers also rely on consistent punctuation to parse a sentence correctly. A misplaced quotation mark can change how an excerpt is rendered in a featured snippet, an email preview, or an accessibility tool.
Practical tip: keep a one-page cheat sheet next to your keyboard with the three rules you reach for most often. For quotes inside outside period, that usually means the rule about capitalization, the rule about punctuation placement, and the rule about block quotations. Anything more than three rules tends to be forgotten under deadline pressure, so curate ruthlessly.
If you write for a global audience, double check whether your house style follows American English or British English. The two traditions disagree on punctuation placement around quotation marks, on the choice between single and double marks for the outer quotation, and on whether long quotations should be indented or set off with a colon. Picking one tradition and sticking to it across a whole site is more important than picking the "correct" one, because mixed styles confuse readers and weaken trust.
Finally, if you are publishing online, remember that screen readers announce quotation marks differently depending on the user's settings. Curly smart quotes, straight typewriter quotes, and the special primes used for measurements are not interchangeable. Use the correct character for the job so that assistive tech reads your sentence the way you intended, and so that copy-paste into another document preserves your meaning.
