Contractions in IELTS Writing: What the Band Descriptors Actually Say

In IELTS Writing Task 2 and Task 1 Academic, write the full forms: do not, it is, they are. In a General Training informal letter, contractions are correct and avoiding them can make your tone wrong.

That is the whole answer, and it is more specific than the rule most preparation pages give you, which is to never use a contraction anywhere. This page shows where that rule comes from, what the public band descriptors say instead, and what the apostrophe actually risks in your Grammatical Range and Accuracy band. The band figures quoted here come from Bandly's own scoring engine and are estimates, not marks from a qualified examiner.

First, the definition

A contraction joins two words and replaces the missing letters with an apostrophe. Do not becomes don't. It is becomes it's. They have becomes they've.

A possessive apostrophe is a different thing that looks the same. The student's essay is not a contraction. It shows ownership, and it is correct in every part of the Writing paper, including the most formal Task 2 essay you will ever write. Nobody is asking you to avoid that one.

What the descriptors say about contractions

Nothing. The word does not appear in the public band descriptors for Writing Task 1 or Task 2, in any of the four criteria, at any band from 0 to 9.

This matters because the four criteria are the whole of the marking. A response is judged on Task Response or Task Achievement, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy. If a feature is not described in any of those, there is no box on the form where a marker records it.

So the question is not whether contractions are banned. It is which criterion a contraction could reach, and there are exactly two routes.

Route one: tone, in General Training Task 1. The Task Achievement descriptor for the General Training letter is the only place in either document where tone is named. At band 7 the response "presents a clear purpose, with the tone consistent and appropriate". At band 6 "there may be inconsistencies in tone". At band 5 "the tone may be variable and sometimes inappropriate".

Read that carefully. It does not say formal. It says appropriate, and appropriate depends on who you are writing to.

Route two: punctuation, in Grammatical Range and Accuracy. The band 7 descriptor asks for "good control of grammar and punctuation but may make a few errors". At band 5, "punctuation may be faulty". An apostrophe in the wrong place is a punctuation error, and that is a real risk, which we come back to below.

Those are the only two doors. There is no third door marked "informality" through which a correctly spelled don't quietly loses you half a band in an essay.

Task by task, what to do

The pattern is not a formality ladder with contractions at the bottom. It is a question about the reader. Task 2 and Task 1 Academic have no reader to be friendly to, so the question never arises. The General Training letter names its reader in the prompt, and that name is the instruction.

Our guide to the General Training formal letter covers the formal end in detail, and how to start an IELTS letter matches the greeting to the register, which is the same decision made one sentence earlier.

The informal letter, where the blanket rule backfires

Here is the opening of a letter to a host family from our sample library, estimated at band 6 overall, with Task Achievement at 8 and both language criteria at 5.

Dear Mr and Mrs Smith, I am writing this letter for saying thank you for having me in your home last month. I am back home now but I often think about my stay with your family.

The task is a thank-you letter to people the candidate lived with. The content is right, and the feedback on this answer named the three bullet points as fully covered. The voice is the problem. I am writing this letter for saying thank you is the opening of a complaint to a utility company.

Now the same two sentences with the register fixed:

Dear Mr and Mrs Smith, Thank you so much for having me in your home last month. I'm back now, but I think about my stay with your family all the time.

Three changes, and only one of them is a contraction:

1. The opening formula goes. I am writing this letter to announces the letter to someone who can see it is a letter. In an informal letter you simply start.
2. I am becomes I'm. This is the contraction, and on its own it is the smallest of the three changes. It carries the tone rather than creating it.
3. Often think becomes think all the time. Everyday phrasing instead of careful phrasing.

The repaired version addresses Task Achievement, because tone is marked there, and it does not harm Lexical Resource, because think about my stay all the time is a natural collocation and often think about my stay is a slightly bookish one. Writing less formally is not writing with a smaller vocabulary.

You can read the full letter, the band estimate and the sentence by sentence feedback on our band 6 samples page, and compare it with the letters that were estimated higher.

A figure worth knowing

We counted the contractions in every answer published in the Bandly sample library: 25 answers, including four General Training letters. The count was zero.

How we counted: a regular expression over the stored text of each answer, matching a word followed by an apostrophe and one of s, t, re, ve, ll, d or m, then reading each match by hand. It found two hits, student's and people's, and both are possessives, not contractions.

Two things follow. First, every one of those answers was written with the no-contractions habit, so the habit is clearly survivable; the four letters were estimated at 6, 6.5, 7.5 and 7.5. Second, and more useful, not one piece of the feedback on any of those answers mentions contractions, in either direction. When a band is held down, the feedback names something else: a subject-verb error, a missing paragraph break, a word used slightly wrong. That is where your attention belongs.

Where the apostrophe genuinely costs you

The real risk is not the contraction. It is the apostrophe error that comes with it, because punctuation is named in the Grammatical Range and Accuracy descriptor at every band from 3 to 7.

These are the four that appear most often in candidate writing:

Notice that two of these are errors made while trying to use a contraction, and two are errors made while avoiding one. The apostrophe is the hazard either way, so the useful habit is not avoidance. It is checking every apostrophe you write by expanding it: if it is fits, the apostrophe is right.

Our post on punctuation in IELTS writing works through the rest of them, and the grammar errors that hold an answer at band 6 shows how these errors accumulate into a band.

What about the rest of the paper

Three quick answers, because candidates ask them in the same breath:

• Speaking. Contractions are normal and expected. Spoken English without them sounds robotic, and fluency is marked.
• Reading and Listening. Nothing is tested about contractions, although you should be able to recognise them, and a contraction written into a gap-fill answer may be marked wrong if the passage used the full form. Copy what the text gives you.
• Quoted speech in a letter. If you report what someone said, write it as they said it. That is accuracy, not informality.

What to do today

Take any General Training letter you have written and do three things to it. Identify the reader from the prompt, in one word: friend, landlord, manager, company. Expand or contract your verbs to match that one word. Then check every apostrophe on the page by reading it aloud as two words and seeing whether the sentence still works.

Then apply the same test to the letter you wrote last week, the one you thought was finished. The register decision is made once, at the greeting, and the rest of the letter either keeps it or drifts away from it, and drift is exactly what the band 6 descriptor describes.

If you want a second opinion on the tone you have ended up with, paste the letter into Bandly and read the Task Achievement feedback. It gives you an estimated band for each of the four criteria and points at the sentences behind it, so you can see whether your register held from the greeting to the sign-off. Those bands are estimates produced by a scoring engine, not marks awarded by a qualified examiner, and they are most useful as a way of finding the sentences worth rewriting.