British or American Spelling? What IELTS Examiners Really Expect.
- Feb 11
- 3 min read
Updated: Feb 20
Category: IELTS Writing
What You Will Learn
Whether British and American spelling both count in IELTS
Why consistency matters more than style
How to build strong spelling habits before test day

Is it organise or organize? Colour or color? Analyse or analyze? Centre or center? Which is British, and which is American? More importantly, which should you use in IELTS?
Before we answer that, a little background. English has two main spelling systems, British and American, and both are widely used around the world. Differences between British and American spelling developed partly after American independence from the British, when Noah Webster published his dictionaries in the early nineteenth century, and promoted simplified spellings as a way of giving the new nation its own linguistic identity.
Over time, these variations became established as the two recognised systems we use today. So, now back to the question. Which spelling system is accepted in the IELTS test?
The good news is that both of them are accepted.
You are not required to use British spelling, nor are you expected to write like an American. Both systems are perfectly proper - hunky-dory - if you prefer, and examiners recognise them just the same. Or should that be recognize?
Well, in the AngloPass blog, it should definitely be recognise. This is simply because we use the British system and are consistent in doing so. And that is what IELTS examiners (and standard writing conventions) demand: once you pick a spelling system, stick to it!
Use the same system throughout your answer. Writing organise in one paragraph and organize in another creates the impression that you are not fully in control of your language.
While IELTS does not punish you for choosing one system over the other, inconsistency may well affect your Lexical Resource score because it suggests carelessness or uncertainty. So, what is the best way not to get caught out?
Actually, the solution is not complicated, but does require focus. Try to do the following from now on:
Choose one variety of English and commit to it.
Set your computer and phone to either UK or US English so that spell-check tools reinforce the same system.
When you learn new vocabulary, check its spelling in your chosen variety.
Read regularly in that variety. This will also help the spelling start to feel natural.
Over time, spelling correctly in your chosen system becomes habit, and habit becomes confidence. IELTS is not testing your nationality or your cultural preference. It is testing your ability to use English accurately and consistently.
When your spelling choices are clear and stable, you remove one source of anxiety from the exam. That mental space can then be used for what really matters: developing strong ideas and expressing them clearly.
If you want a head start, scroll down to the bottom of this post for a short list of commonly used words with different spellings. And if you want additional support, why not download our free IELTS 25 Phrases Phrasebook. It includes powerful sentence frames built using our Copy–Practise–Create method, designed to improve both accuracy and speed in Writing Task 2.
British - American:
analyse – analyze
behaviour – behavior
cancelled – canceled
catalogue – catalog
centre – center
cheque – check
colour – color
counselling – counseling
defence – defense
dialogue – dialog
favour – favor
grey – gray
honour – honor
jewellery – jewelry
kilometre – kilometer
labour – labor
licence (noun) – license
metre – meter
neighbour – neighbor
offence – offense
organise – organize
practise (verb) – practice
programme – program
realise – realize
recognise – recognize
theatre – theater
traveller – traveler
travelling – traveling
Want Extra Support?
Download your free IELTS Phrase Book — a practical tool for improving your Speaking and Writing under exam pressure.


