Here's the thing most students don't realize: examiners spend about two minutes on your Task 1 letter. That's 120 seconds. And they're not looking for what you did right. They're hunting for mistakes. If you're making the same five errors that 70% of test-takers make, you're losing 10 to 15 band points without even knowing why.
This is where it all falls apart. Students rush through letters, mess up the formality, butcher punctuation. Then they walk out thinking they crushed it, only to find out they got a 6.0 when they needed a 7.0 for their dream university.
Let's fix that. This guide shows you exactly which errors sink IELTS letters, gives you real weak versus strong examples, and walks you through a checklist you can use right now on your own writing. If you want an automated IELTS writing checker to catch these mistakes instantly, we've got that too.
Task 1 is 33% of your Writing band score. That's a huge chunk. You can't hit a 7.0 in Writing if your Task 1 is sitting at 5.5. Examiners grade it on Task Response, Coherence & Cohesion, Lexical Resource, and Grammatical Range & Accuracy—same criteria as Task 2. It counts.
The difference between a 6.5 and a 7.0 usually comes down to sloppy mistakes that any letter checker would catch in seconds. Wrong formality. Missing punctuation in the address. A vague purpose statement. These aren't small things. They force the examiner to work harder to understand you, and that costs you points.
This is the number one killer. Students write formal complaint letters or job applications using language they'd text to a friend. Then they're shocked when marks get deducted for register.
IELTS Task 1 letters come in two types: formal (to organizations, employers, people you don't know) and semi-formal (to friends, acquaintances, people you have a relationship with). The tone has to match the context. A complaint to a hotel manager can't sound casual. A letter to a friend about a trip can't sound like a legal filing.
Weak: "Hi there, I'm really annoyed because the hotel was basically trash and the staff didn't really care about anything. Can you guys sort this out ASAP?"
Good: "I am writing to express my disappointment with the services I received during my stay. The accommodation did not meet the standards advertised, and the staff appeared indifferent to my concerns."
Notice the shift. The weak version uses contractions, slang ("trash"), and casual abbreviations ("ASAP", "guys"). It reads like a text message. The good version uses full forms, proper vocabulary, and measured language. That's easily a 2-band-point difference in formal letter mistakes.
Tip: Swap "I'm" for "I am", "can't" for "cannot", and drop words like "really", "basically", "stuff", or "things" in formal letters. Ask yourself: would a lawyer write this way? If the answer's no, rewrite it.
Your letter needs structure. Full stop. IELTS band descriptors reward coherence and cohesion, which means the examiner wants to see ideas flow logically. A badly structured letter feels like a car that can't find the right gear.
The standard IELTS General Training letter format goes: address/date, greeting, opening (why you're writing), body paragraphs (main points and explanation), closing (what you want to happen), and sign-off. Skip any of these or scramble the order, and you'll lose coherence marks.
Here's what usually goes wrong: writers start with a rambling backstory instead of stating their purpose upfront. They hammer the same point three times instead of organizing ideas into clear paragraphs. They forget to close with what they actually want.
Weak opening: "I recently went to your restaurant and I had some experiences there that I want to tell you about because I've been eating at restaurants for a long time and this one was different."
Good opening: "I am writing to lodge a formal complaint regarding my dining experience at your restaurant on 12th October."
The weak version buries the point under filler. The good opening tells the examiner exactly why you're writing in one sentence. No guessing. No wasted words. This is how to identify letter writing errors before they cost you band points.
Grammatical Range and Accuracy is 25% of your Writing band score. That matters. In Task 1, this means consistent verb tenses, correct punctuation, and solid sentence construction. One rule: if you're not confident, keep sentences simple and correct rather than long and broken.
The errors we see most often in letter correction are sentence fragments, comma splices, tense shifts, and missing punctuation in addresses. Let's dig into each.
A fragment is an incomplete thought. It happens when you write a phrase or dependent clause standing alone without a main clause.
Weak: "I requested a refund. Which should have been processed within 30 days."
Good: "I requested a refund, which should have been processed within 30 days."
That second sentence is a fragment. It's missing a main clause. Fix it by joining with a comma or restructuring.
Match your tense to what you're describing. Past events get past tense. Current situations and requests get present tense. Bouncing between them mid-paragraph confuses readers and costs you grammar marks.
Weak: "I stay at your hotel last month and the room was dirty. The staff does not help when I ask for cleaning."
Good: "I stayed at your hotel last month and the room was dirty. The staff did not help when I asked for cleaning."
In the weak version, tense is all over the place. "Stay" should be "stayed", "does not help" should be "did not help". Keep your timeline steady.
This detail matters to examiners. Use commas between address lines and after the date. Here's the format:
The Manager
Oxford Street Hotel,
45 Oxford Street,
London,
UK
16th October, 2026
Using "it", "this", "that", or "they" without a clear antecedent kills coherence. The examiner has to stop and re-read to figure out what you mean. That's not the impression you want.
Weak: "I purchased a laptop from your store. It arrived damaged. I contacted your support team, but they did not respond. This was very frustrating."
Good: "I purchased a laptop from your store, but it arrived damaged. When I contacted your support team, they failed to respond. This lack of service was deeply frustrating."
Both use pronouns, but the good version is sharper. "This lack of service" is clearer than just "This was very frustrating." Readers know exactly what upset you. For a deeper dive on tone and register in letters, our guide on letter register and tone correction covers this in detail.
Tip: After you write "it" or "this", ask yourself: could someone be confused about what I'm talking about? If yes, be specific. Name the thing. Say "this problem", "the laptop", "your service" instead of leaving it vague.
Task 1 needs at least 150 words. Most students know this. What they don't know is how to hit that mark without sounding repetitive or filling space with useless words.
Padding sounds like this: saying the same idea three different ways, adding filler phrases like "in my opinion" or "I would like to say that", or writing long sentences that go nowhere. Examiners hear it. And it damages your coherence score because readers can't tell if you're making new points or just going in circles.
Weak (padded): "I am writing this letter to you because I want to complain about something that happened to me. I really think it is important that I tell you about this issue. In my opinion, what happened was not okay. I would like to say that this situation made me unhappy."
Good: "I am writing to formally lodge a complaint regarding my recent purchase. The product arrived defective and failed to meet the advertised specifications."
The weak version burns 56 words saying almost nothing. The good version uses 22 words and communicates real information. That's efficiency. That's what IELTS rewards.
Tip: Hit your word count by adding details and reasons, not by repeating ideas. Instead of saying the service was bad three times, explain why it was bad and what the impact was. That's developing your Task Response, not just padding space.
Your letter needs a clear statement of what you want to happen next. That's part of Task Response. Are you asking for a refund? Requesting a meeting? Demanding an apology? The examiner needs to know.
A weak closing just fades out. A strong closing tells the reader exactly what you expect.
Weak: "I hope you will think about what I have said. Thank you for reading my letter."
Good: "I expect a full refund within 14 days. Please confirm receipt of this letter and provide a timeline for resolution."
The weak version is polite but says nothing. It doesn't ask for anything concrete. The good version is direct. You know exactly what the writer wants. And that clarity is what IELTS rewards.
Run through this every time you finish a letter. Check off each item before you call it done.
Beyond the checklist, there are specific letter types that show up in IELTS General Training. Complaint letters, request letters, and inquiry letters each have their own traps.
For complaint letters, the biggest error is sounding angry instead of professional. You want to be firm, not emotional. Our letter complaint checker guide walks through how to express frustration while staying formal.
For request letters, students often skip the reason. "Please do X" is weaker than "Please do X because Y". Reasons show you're thinking, not just demanding.
For inquiries, vagueness kills your band. Instead of "I'd like to know about your courses", say "I'd like to know if your Business Management course includes modules on financial accounting and whether it runs part-time in the evening."
If you're working on letter structure itself, our guide on letter structure and layout goes deeper into how to arrange your ideas so they flow naturally.
Stop guessing about your letter score. Use a free IELTS writing checker to catch formality errors, grammar mistakes, and structure issues before test day. Get instant band score estimates and line-by-line feedback to identify letter writing errors and hit 7.0 or higher.
Check My Letter FreeBefore you turn in your letter, run it through this quick filter: Read the opening sentence out loud. Does it sound like you're introducing a formal letter, or does it sound like you're texting? If it sounds casual, rewrite it. Check every "it" and "this" to see if the reader knows what you mean. Scan for contractions in formal letters. Verify every verb is the same tense within a paragraph. Look at your closing and confirm it says what you want to happen.
Two minutes. That's it. Those two minutes separate a 6.5 letter from a 7.0 letter. Because examiners don't have time to guess what you mean. They just mark what they see. Make it clear, and you make their job easy. Make their job easy, and they reward you. Use this letter checker guide and your IELTS general training letter correction will improve immediately.