You sit down for your IELTS exam. Task 1 stares back at you: write a formal letter to a hotel manager about a booking problem. You've got 20 minutes. You know how to write letters. You've done it a hundred times. So why do so many candidates drop from Band 7 to Band 5 on this single task?
Here's the thing: Task 1 letters aren't just about what you say. They're about format, tone, structure, and those tiny grammatical choices that examiners notice instantly. Miss the mark on even two of these, and your band score gets hit hard.
A good IELTS writing checker can catch these mistakes before test day. But first, you need to understand what you're looking for.
Task 1 format seems simple. It's not. The IELTS band descriptors for Task Response specifically reward candidates who "write in an appropriate register" and "provide a clear structure." Your format is part of that score.
Most students know they need an opening salutation and closing sign-off. What they miss is consistency and convention.
Weak: "Dear Sir or Madam, I am writing to you because I want to complain about my recent stay at your hotel..." (No paragraph breaks. No closing with a name or formal sign-off.)
Good: "Dear Sir or Madam,
I am writing to formally lodge a complaint regarding my recent stay at your hotel.
[Body paragraph 1]
[Body paragraph 2]
I look forward to hearing from you.
Yours faithfully,
John Smith"
See the difference? The strong example has clear paragraph breaks, a purpose statement in the opening, and a proper closing. That structure tells the examiner you understand formal letter conventions.
Tip: Use "Yours faithfully" when you don't know the recipient's name (the normal Task 1 scenario). Use "Yours sincerely" only if you've actually named them in the salutation. Examiners check these details.
Your tone in a formal letter must stay formal. Full stop. This is where most students stumble. They drift between casual and formal without realizing it.
The IELTS rubric rewards "appropriate register" for Task Response. Formal letters demand formal register throughout, no exceptions.
Weak: "I stayed at your hotel last month and the service was really bad. The staff weren't nice to me, and the room was kinda dirty. I'm pretty annoyed about this and think you should do something about it."
Good: "I stayed at your hotel during May and encountered several service deficiencies. The staff lacked professionalism in their interactions with guests, and the room did not meet acceptable hygiene standards. I would appreciate the opportunity to discuss these issues with you."
The weak version uses words you'd say to a friend ("weren't nice", "kinda", "pretty annoyed"). The strong version uses formal vocabulary ("service deficiencies", "lacked professionalism"). The gap between them is what separates Band 5 from Band 6.
Here's a quick test: read your letter aloud. Does it sound like something you'd say to a friend, or something you'd write to someone in authority? If it's the former, your tone needs work. An IELTS essay checker flags these register shifts automatically.
Task 1 letters need clear structure. You're not writing stream-of-consciousness. You're addressing a specific task with specific information to convey.
The IELTS rubric for Coherence and Cohesion rewards "a clear logical progression" of ideas. Your letter must guide the reader through your purpose, details, and request in order. It needs to make sense the first time someone reads it.
Most candidates skip this and dump all their information in a messy blob.
Weak structure: Opening statement, then random details about when you visited, what went wrong with the room, the staff, the restaurant, your feelings, a request for a refund, another complaint, then closing. Everything feels scattered.
Good structure: Opening (state your purpose clearly in one sentence). Body paragraph 1 (describe the specific problem). Body paragraph 2 (explain why it affected you). Closing (state exactly what you want). Sign-off.
The strong structure is predictable. That's exactly what formal letters should be. Examiners can follow your logic without confusion.
Task 1 writing is assessed on Grammatical Range and Accuracy. Here's the painful truth: most students make the same grammar errors repeatedly, and examiners see them instantly.
Let's look at three that cost you points.
1. Subject-verb agreement in complex sentences.
Weak: "The issues which occurred during my stay was unacceptable." (The subject is "issues" (plural), but the verb is "was" (singular).)
Good: "The issues which occurred during my stay were unacceptable."
2. Wrong prepositions in formal phrases.
Weak: "I am writing for complaining about my reservation." (Wrong preposition.)
Good: "I am writing to lodge a complaint regarding my reservation."
3. Tense inconsistency.
Weak: "I booked a room for three nights and the staff are very rude. The breakfast was not available when I arrive." (Jumps between past, present, and past tense randomly.)
Good: "I booked a room for three nights. The staff were rude, and the breakfast wasn't available when I arrived."
One grammar error won't destroy you. But three or four in a short 180-word letter? Examiners notice patterns, and that's the difference between Band 6 and Band 5.
Tip: After you write your letter, read through it once looking only for grammar mistakes. Don't try to fix grammar and vocabulary at the same time. Your brain gets overloaded.
Task 1 requires a minimum of 150 words. Most candidates write exactly 150-180 words and move on. That's fine, but you're playing it safe.
The IELTS rubric rewards "appropriately developed extended writing." If your letter is exactly 150 words, you're hitting the minimum. There's no room for sophisticated vocabulary or complex sentence structures.
Aim for 170-200 words instead. This gives you space to develop your points and show grammatical range without padding unnecessarily.
Weak approach: Rushing through 150 words in 10 minutes, then moving to Task 2 with only 20 minutes left. Task 1 gets minimal attention and effort.
Good approach: Spending 18-20 minutes on Task 1 to write 180-190 words with time for proofreading. Better quality means better band score, and Task 1 counts for half your Writing mark.
Don't write just to hit a number. Add words that strengthen your argument, not filler.
Formal letters have punctuation rules. You might think this doesn't matter much, but it signals competence to examiners. It's part of Grammatical Range and Accuracy.
Here's what students get wrong:
These details seem small. But when you make all of them, the examiner sees carelessness. Carelessness lowers your accuracy score.
Here's a real IELTS Task 1 prompt: "You have just returned from holiday and discovered that the flights for your return journey were not as described in the travel agent's brochure. Write a letter to the travel agency. In your letter, describe what was wrong with the flights, say how this has affected you, and suggest what action you would like the travel agency to take."
Three things. Three. Most students address only one or two and wonder why their score is low.
The IELTS band descriptors reward "fulfilling all parts of the task fully." You need to hit all three requirements clearly and thoroughly.
Weak approach: "The flights were bad and uncomfortable. Please refund me." (Barely addresses what was wrong, skips the personal impact, and the action request is way too brief.)
Good approach: "The outbound flight departed four hours late, and the aircraft lacked the premium seating promised in your brochure. This delay caused me to miss a crucial business meeting and incur unexpected hotel costs. I request a full refund of my flight cost, plus compensation for the additional accommodation expenses I incurred."
The strong version hits all three: what was wrong (late departure, missing amenities), how it affected you (missed meeting, extra costs), and what you want (specific refund plus compensation).
Before you finish your letter, underline each requirement in the prompt and check them off as you write. Takes 30 seconds, saves you from missing marks.
Tip: Spend 2 minutes reading and annotating the prompt before you write. It costs time upfront, but it saves you from writing off-topic content later.
Your vocabulary matters for Lexical Resource. The rubric rewards "sophisticated vocabulary" and "appropriate word choice." Task 1 letters have standard formal vocabulary that students mix up or misuse.
Complaint vs. Complain: "I want to complain about..." works, but "I want to lodge a complaint regarding..." is more formal and shows you know the register.
Problem vs. Issue: Both are correct, but "issue" sounds more formal in business writing. Use it in formal letters.
Want vs. Expect/Request: "I want a refund" is too casual. "I expect a refund" or "I request a refund" is appropriate for formal writing.
Sorry vs. Apologize: "I'm sorry to bother you" is conversational. "I apologize for any inconvenience" is formal.
Bad/Good vs. Substandard/Satisfactory: "The service was bad" is vague and casual. "The service was substandard" is formal and specific.
These aren't grammar errors. They're register errors. The examiner sees you don't fully understand formal English conventions.
Vocabulary checklist: Ask yourself: Would I use this word in a business email to my boss or a company complaint letter? If the answer is no, find a more formal alternative.
You can memorize every rule in this article, but when you're writing under time pressure, errors slip through. An IELTS writing checker catches what your eyes miss. It flags grammar mistakes, tone issues, format problems, and vocabulary register errors before you submit.
An IELTS essay checker can evaluate your Task 1 letter automatically, showing you exactly where your formal letter format breaks down and how to fix it.
If you're getting stuck at Band 5, check out our guide on 10 reasons students get stuck at Band 5 in IELTS Writing. It covers common patterns across both Task 1 and Task 2 that hold students back.
Want to know how much work it actually takes to improve? Our article on how many hours of study it takes to improve one IELTS band gives you realistic timelines and strategic steps.
Use our free IELTS writing checker to get instant feedback on your Task 1 letters. Spot grammar errors, tone issues, and format problems before you submit them in the real exam.
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