Working across time zones and national offices is normal now for a lot of people. Coming from Hong Kong, where international business communication is just part of the job, I was used to writing emails that went to London, Sydney, and New York in the same week. What I was not used to was noticing how differently each of those inboxes read the same message.
A note drafted for my Sydney colleagues landed oddly in the Boston inbox. A direct reply to a UK stakeholder read as blunt in a Tokyo thread. You end up choosing between writing for the majority on your immediate team and accepting that some readers will find the tone slightly off — or you try to flatten everything into a register that nobody finds grating, which usually means losing personality and rhythm entirely.
There is a better approach. "Global English" — sometimes called plain English or International Business English — is not a dialect but a calibration strategy. It prioritises clarity and intelligibility over regional idiom, without drifting into robot-speak. Here are the practical principles and the common mistakes.
The Core Principle: Prefer Shared Over Regional
Every regional English variant has idioms, contractions, slang, and cultural references that are natural to native speakers of that variant and opaque to everyone else. Global English writing removes or explains these and replaces them with vocabulary and structures that have wide intelligibility across all variants.
This is not dumbing down. A senior professional writing to a global audience should still write at a senior level. The skill is choosing the words and structures that work across variants.
Regional (AU/UK idiomatic): "We're flat out this fortnight but let's touch base after the dust settles."
Global equivalent: "We're fully committed for the next two weeks. Let's connect once the current work is complete."
"Flat out" and "fortnight" are intelligible to British and Australian readers but not universal. "Touch base" is understood in North American English but less so elsewhere. The global version loses no meaning.
Avoid Idioms Anchored to One Culture
Sports metaphors are the most common offender. American business culture produces idioms drawn from American football and baseball ("move the goalposts," "step up to the plate," "out of left field") that are largely opaque to readers who did not grow up with those sports. British cricket idioms ("sticky wicket," "hit for six," "on a good wicket") have the same problem in reverse.
Safe alternatives:
- Instead of "move the goalposts" → "change the requirements mid-project"
- Instead of "ballpark figure" → "rough estimate"
- Instead of "hit for six" → "surprised significantly" or "thrown off course"
- Instead of "out of left field" → "unexpected"
Contractions: More Than You Think
Many writers suppress contractions in professional writing, under the impression that contractions are informal. In most modern business writing, contracted forms (we're, I've, it's, you'll) are standard in emails and messages. Avoiding them entirely produces a slightly formal, lecturing tone that can read as cold.
The exception is the most formal contexts: legal correspondence, official reports, regulatory filings. In day-to-day communication, use contractions.
Over-formal: "We have reviewed the proposal and we have concluded that we are in agreement with the timeline."
Natural: "We've reviewed the proposal and we're in agreement with the timeline."
Sentence Length and Structure
Long, complex sentences increase cognitive load for all readers, but they create a heavier burden for readers who are processing the text in a second language themselves. The global professional audience often includes non-native English speakers on both ends of the conversation.
Target one idea per sentence. Use bullet points for three or more parallel items. Break paragraphs at three to four sentences.
Before: "In order to proceed with the implementation of the proposed solution, which was outlined in the specification document that was shared with the team on the 15th of this month and subsequently revised following the feedback that was received during the review session, we will need to obtain formal sign-off from the relevant stakeholders before the end of the current quarter."
After:
"To proceed with implementation, we need formal sign-off from the relevant stakeholders by end of quarter. The solution is based on the specification shared on the 15th and updated after the review session."
Date and Number Formats
Date formats are a genuine source of confusion. March 4 is 03/04 in American format and 04/03 in British and Australian format. In a multinational document, always write dates in unambiguous form: 4 March 2026 or 2026-03-04 (ISO 8601).
Numbers: use a comma as the thousands separator (1,000,000) and a period as the decimal separator (3.14) for international business documents, as this is the most widely understood convention globally.
Tone: Neutral Does Not Mean Cold
The risk of Global English is that in removing all regional flavour, you produce writing that reads as institutional — correct but characterless. The solution is to preserve a direct, personal voice while removing the regional markers.
Too institutional: "It has been determined that the timeline requires revision."
Personal and global: "We need to revise the timeline."
Keep first person. Keep active voice. Use plain verbs rather than noun-heavy constructions.
How Local Tone Handles This
When you select "Global" as your region in Local Tone, the tool removes idioms, sports metaphors, and regional contractions while preserving your sentence-level voice. The analysis notes flag each regional marker and explain the substitution. This is particularly useful when you are writing a single document that will go to multiple regional audiences — you can draft in your natural register and let the tool calibrate for the broadest possible readership.
For region-specific calibration guides, see the articles on Australian vs British English at work, Canadian business English, and US vs UK emails.