12 Common IELTS Writing Mistakes (And How to Fix Them)

Not Answering All Parts of the Question

This is the single most costly mistake in IELTS Writing. If the question asks you to "discuss both views and give your opinion" and you only discuss your own view, your Task Response score is capped at Band 5 -- regardless of your language quality.

How to fix it: Before writing, underline every instruction word in the prompt. Count how many things you need to address, then check that each one appears in your plan.

Writing Under the Minimum Word Count

Task 1 requires 150 words minimum and Task 2 requires 250 words minimum. Writing below these limits triggers an automatic penalty on your Task Achievement/Response score. Even 5 words under the limit can cost you.

How to fix it: Practice counting your handwritten words. Most people write about 10 words per line. For Task 2, aim for at least 26-27 lines. During practice, write full essays under timed conditions to develop a sense of how much 250+ words looks like in your handwriting.

Copying the Question Word-for-Word

Many test-takers copy the essay prompt directly into their introduction. This is a problem for two reasons: copied words are not counted toward your word total, and it signals to the examiner that you cannot paraphrase -- which directly lowers your Lexical Resource score.

How to fix it: Rewrite the question using synonyms and different grammatical structures.

Missing the Overview in Task 1

The overview paragraph is mandatory in Task 1. Without it, your Task Achievement score cannot go above Band 5. The overview should state the 2-3 most significant patterns or trends without citing specific numbers.

How to fix it: After writing your introduction, immediately write an overview paragraph starting with "Overall," or "In general," that summarizes the biggest trends visible in the data.

Poor Paragraphing

Writing the entire essay as a single block of text, or splitting ideas mid-thought across paragraphs, significantly lowers your Coherence and Cohesion score. Each paragraph should contain one main idea and be clearly separated.

How to fix it: Use the 4-paragraph structure: introduction, body 1, body 2, conclusion. Start each body paragraph with a clear topic sentence that signals the main idea.

Subject-Verb Agreement Errors

This is one of the most frequent grammar mistakes and it affects your Grammatical Range and Accuracy score. The error is especially common with uncountable nouns and complex subjects.

How to fix it: Identify the true subject of each sentence. Ignore any phrases between the subject and verb.

Incorrect Article Usage

Articles (a, an, the) are one of the trickiest parts of English grammar, and errors here are extremely common among IELTS test-takers. While a single article error will not ruin your score, repeated errors create a pattern that lowers your GRA band.

How to fix it: Remember three key rules: use no article for general/abstract concepts ("Education is important"), use "the" for specific items ("the education system in Japan"), and use "a/an" when introducing something for the first time ("a recent study showed...").

Run-On Sentences

A run-on sentence occurs when two independent clauses are joined without proper punctuation or a conjunction. This is a significant error because it makes your writing harder to follow and directly affects both your CC and GRA scores.

How to fix it: Use a period to split long sentences, a semicolon for closely related ideas, or a conjunction (and, but, so, because) to connect clauses properly.

Repeating the Same Vocabulary

Using the same word or phrase repeatedly throughout your essay signals a limited lexical range. If you use the word "important" five times in your essay, your LR score will suffer, even if the rest of your vocabulary is strong.

How to fix it: Learn 3-4 synonyms for common IELTS words. For "important," use: significant, crucial, essential, vital. For "increase," use: rise, grow, climb, expand. For "problem," use: issue, challenge, concern, drawback.

Overusing Memorized Phrases

Phrases like "In today's modern world," "It goes without saying that," and "Since time immemorial" are red flags for examiners. They suggest you have memorized templates rather than generating your own language in response to the question.

How to fix it: Write naturally and directly. Instead of "In today's rapidly changing world, it is widely acknowledged that...", simply write: "Many people believe that..." The simpler version is more natural and lets your real language ability show through.

Using Informal Language

IELTS Academic Writing requires a formal register. Using contractions (don't, can't, it's), slang, or overly casual expressions lowers your Lexical Resource score. This also applies to Task 1.

How to fix it: Always write full forms: "do not" instead of "don't," "cannot" instead of "can't." Avoid colloquial expressions like "a lot of" (use "a significant number of"), "kids" (use "children"), and "stuff" (use "factors" or "aspects").

Not Proofreading

Many test-takers use every last minute writing, leaving no time to re-read their essay. This means easily fixable errors -- missing articles, misspelled words, incomplete sentences -- remain in the final submission and cost marks across multiple criteria.

How to fix it: Reserve 2-3 minutes at the end of each task to proofread. Focus on three things: subject-verb agreement, articles, and spelling. These three error types are the easiest to spot and fix during a quick re-read. Even correcting 2-3 errors can make the difference between Band 6.5 and Band 7.

What are the most common IELTS writing mistakes?

The most common mistakes include not answering all parts of the question, writing under the minimum word count, overusing memorized phrases, missing the overview in Task 1, poor paragraphing, subject-verb agreement errors, incorrect article usage, run-on sentences, repeating vocabulary, using informal language, poor time management, and not proofreading.

How can I avoid losing marks in IELTS writing?

Always read the question carefully and underline each part you need to address, plan your essay for 3-5 minutes before writing, use the PEEL structure for body paragraphs, leave 2-3 minutes for proofreading, and practice under timed conditions. Getting feedback from AI tools like IELTS-GPT can help you identify specific recurring errors in your writing.

Does spelling matter in IELTS writing?

Yes, spelling matters. Spelling errors are counted under the Lexical Resource criterion. Occasional minor mistakes will not significantly affect your score, but frequent errors that impede understanding can lower your LR band score. Both British and American spellings are accepted.

Is it okay to use contractions in IELTS writing?

No, you should avoid contractions (don't, can't, it's) in IELTS Academic Writing. Use the full forms instead (do not, cannot, it is). Contractions are considered informal and can negatively affect your Lexical Resource score. Check out our writing tips page for more advice on formal academic style.