Why is my IELTS writing score lower than my speaking?

A writing band below your speaking band is the ordinary result, not a sign that something went wrong on test day. The two modules share only half of their criteria, and writing is marked on a demand — a developed position on a question you did not choose — that speaking never makes of you.

So the gap is structural before it is personal. What follows is what the two mark schemes actually have in common, the four places the gap opens, and how to close it without simply writing more essays.

The same English, two mark schemes, two different bands.

The two modules are not marked on the same four things

Speaking is assessed on Fluency and Coherence, Lexical Resource, Grammatical Range and Accuracy, and Pronunciation. Writing Task 2 is assessed on Task Response, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy — and in Task 1 the first of those is Task Achievement instead, a difference set out in Task Achievement vs Task Response.

Line the two lists up and only two names appear in both: Lexical Resource, and Grammatical Range and Accuracy. Two of your speaking criteria have no counterpart on the page at all. Fluency is not rewarded in writing; pronunciation does not exist there. If you are confident and clear in conversation, those two criteria are quietly carrying half of your speaking band, and nothing carries the equivalent weight in your essay.

Writing then adds a criterion that speaking has no version of. Task Response asks for a position, developed and supported, on a prompt with parts that must all be covered. No speaking descriptor asks that of you.

Even the two shared names are judged on different evidence. Your speech is heard once, in real time, and the examiner is assessing what you can produce spontaneously with no chance to revise. Your essay is a fixed text read at reading speed, where every error stays on the page and can be counted twice. Same criterion name, different bar.

Cause 1 — Speaking asks you to answer; writing asks you to argue

Part 3 of the Speaking test rewards a relevant, extended, fluent answer. It does not require you to hold one position across the whole response, cover every part of a set question, or reach a conclusion your own paragraphs have earned.

Task Response requires all three.

Band 6: "The main parts of the prompt are addressed (though some may be more fully covered than others). A position is presented that is directly relevant to the prompt, although the conclusions drawn may be unclear, unjustified or repetitive."

Band 7: "The main parts of the prompt are appropriately addressed. A clear and developed position is presented. Main ideas are extended and supported."

A strong speaker usually produces the band 6 version on paper without noticing. The position is relevant, the points are true, the ideas are all connected to the question, and the conclusion says the introduction again in different words. Spoken aloud, that answer is good — it is fluent, on topic, and it fills the time. Written down, it is exactly the line between 6 and 7, and it is the most common reason a confident speaker lands at 6.5. The four patterns that produce that score are broken down in why am I stuck at band 6.5.

The other half of the band 6 clause — "some may be more fully covered than others" — is where two-part prompts are lost. In speech, an examiner asks one question at a time. In Task 2 the prompt can carry two demands in a single sentence, and a fluent writer who answers the more interesting one and leaves the other thin has capped Task Response at 6 before writing a word of the conclusion.

Cause 2 — In speech an error passes; on the page it is counted

Band 7 Grammatical Range and Accuracy: "A variety of complex structures is used with some flexibility and accuracy. Grammar and punctuation are generally well controlled, and error-free sentences are frequent."

"Error-free sentences are frequent" is a counting instruction, and it is only possible to follow because the text sits still. A reader can go back over your sentence; a listener cannot. Speaking's own grammar criterion is applied to language produced in real time, where hesitation and self-correction are expected and a slip you repair mid-sentence often does not register as an error at all.

Punctuation lives inside this criterion too, and it has no spoken counterpart whatsoever. Comma splices, a missing comma after a fronted adverbial, sentences that run past the point where they should have stopped — none of these can happen in your Speaking test, and all of them are marked here.

The practical consequence is worth stating plainly: your grammar is probably not weaker in writing. It is more visible in writing. The band 6 wording describes a pattern rather than a level — simple sentences clean, complex ones less so — and the four structures that reliably count as range are set out in complex sentences for band 7.

Cause 3 — Vocabulary that sounds fluent does not always read well

Lexical Resource is one of the two shared criteria, which is why the gap here surprises people most. Band 7 in writing asks for a resource "sufficient to allow some flexibility and precision", with "some ability to use less common and/or idiomatic items" and an evident "awareness of style and collocation".

Two things in that line work against a good speaker.

The first is style. Idiomatic and colloquial language is an asset in the Speaking test — it is natural, it is what a fluent user of English sounds like. Transferred to an academic essay, the same items become register errors: a lot of, kids, stuff like that, you can't really say, contractions, and direct questions addressed to the reader. Speaking rewards sounding natural. Writing rewards being appropriate to the task, and those are not the same target.

The second is precision. In conversation you can circle a meaning with three approximate words and your listener assembles the intended sense from context, tone and the fact that you are visibly still going. On the page there is no assembly. That circling is the band 6 line itself: "a rather restricted range or a lack of precision in word choice" — an essay with no vocabulary errors in it that stops at 6 because the exact word was available and not used.

Cause 4 — Coherence in writing is paragraphs and reference, not signposting

Speaking measures Fluency and Coherence together, and most of what it measures is continuation: speech rate, hesitation, whether ideas connect as they arrive. Writing's Coherence and Cohesion asks for something spoken language never needs — a visible paragraph structure, and "a range of cohesive devices including reference and substitution" used flexibly.

The same content, once as it would be spoken and once as it has to be arranged on the page.

A spoken answer is a single continuous stream, and and then, also, so basically are what keep it moving. Set that stream down as an essay and you get the band 6 description: "cohesive devices are used to some good effect but cohesion within and/or between sentences may be faulty or mechanical due to misuse, overuse or omission". The habit that helps you in one module is named as a fault in the other.

Note also what band 7 asks for that speech handles by other means. Reference is pronouns and demonstratives pointing back at something specific — this, these, such, the latter. Substitution is replacing a repeated phrase with a short stand-in — doing so, one, the same. When you speak, intonation, gesture and a vague that thing do this work for you and the examiner follows without difficulty. On paper the pointing has to be explicit or the sentence is ambiguous. Why adding more connectives makes this worse rather than better is the subject of linking words are keeping you at band 6.

How to close the gap

Start by dropping the assumption that the fix is volume. More essays written the same way reproduce the same criterion split, because the behaviour that caps you is the one you are practising. What follows is ordered by how quickly each item moves.

Mark against writing's criteria, not against your ear. The instinct a strong speaker has — read it back, does it sound fine — is calibrated to the speaking bar, and the speaking bar is lower in the two places that matter. If it sounds fine and still scores 6.5, that is the diagnosis, not a contradiction of it. Take one essay and go through it four times, once per criterion.

Use the five minutes speaking never gives you. Plan before you write: count the parts of the prompt, commit to a position you can hold for four paragraphs, and decide one development step for each body paragraph — the why is this true or what follows from it sentence. Task Response and Coherence and Cohesion both respond to decisions taken before the first sentence, which is why they move in weeks rather than months.

Do a register pass. Read the essay looking only for spoken language: contractions, a lot of, phrasal verbs where a single verb exists, questions aimed at the reader, and any phrase you would say out loud but would not print. This is a five-minute edit that moves Lexical Resource on its own.

Separate timing from English. If you have never written 250 words to a set question in forty minutes, the first gap to close is not vocabulary — it is the exam task itself. A first timed attempt commonly scores below what the same person can produce untimed, and no amount of criterion work shows through until the essay is finished within the time.

One caveat on how much gap to expect. A half band or a full band between speaking and writing is unremarkable and describes most candidates who prepare for both. A gap wider than that usually points at something specific and fixable — an unfamiliar task type, an unfinished second task, or a Task Response habit — rather than at your level of English, and it is worth finding out which before booking another test. The full band 5 to 8 wording for all four writing criteria is in IELTS Writing band descriptors explained, and how to get band 7 in IELTS Writing sets the four out as conditions rather than advice.

FAQ

Is it normal for IELTS writing to be lower than speaking?

Yes. It is the usual pattern rather than the exception. Half of your speaking band comes from fluency and pronunciation, neither of which is assessed in writing, and writing adds Task Response, which has no spoken equivalent. Only two of the four criteria carry over, and even those are judged on a fixed text rather than on real-time speech.

Why is my speaking 7.5 but my writing 6.5?

Most often because a fluent, relevant answer is a good spoken answer but only a band 6 written one. Band 6 Task Response describes a position that is relevant with conclusions that may be "unclear, unjustified or repetitive" — which is what a strong speaker produces on paper by default. Check Task Response and Coherence and Cohesion before you conclude your grammar or vocabulary is the problem.

Is grammar marked more harshly in writing than in speaking?

The band descriptors are not identical, and the reading conditions differ more than the wording does. Writing's criterion includes punctuation and asks for error-free sentences to be frequent, which is countable only because the text stays still. In speech, a repaired slip usually does not read as an error at all.

Will writing more practice essays close the gap?

Not on its own. Practice repeats the behaviour you already have, including the one capping the score. Essays help once each one is marked against a specific criterion and the next is written to change that criterion.

How big a speaking-to-writing gap is too big?

Half a band to a full band is unremarkable. A wider gap usually points to something specific — an unfinished task, an unfamiliar task type, or a Task Response habit — rather than to your general level of English, so it is worth diagnosing by criterion before retaking the test.

Are the band estimates on this site official?

No. They are estimates made against the public band descriptors. Only a certified examiner produces an official band.

Related reading

• Why am I stuck at band 6.5 in IELTS writing — the four criterion patterns that produce a 6.5
• Task Achievement vs Task Response — the criterion that changes between Task 1 and Task 2
• Linking words are keeping you at band 6 — what the cohesion descriptor asks for instead
• IELTS Writing band descriptors explained — the full band 5 to 8 wording for all four criteria

All descriptor wording quoted here is from the public Writing band descriptors updated in May 2023, published by IELTS and the British Council.