IELTS Writing Task 1 Letter Checker: Common Errors Costing You Band Points

You sit down. You write what feels like a solid formal letter. You hit the word count. You're feeling confident. Then your results come back and your Writing score is a 6.5 when you needed a 7.

What went wrong? You probably lost band points to errors that a quick IELTS writing checker would've caught instantly. Here's the thing: most students treat Task 1 like "just a letter," so they rush through it without applying the same rigor they use for Task 2. That's a Band 5 mistake dressed up as confidence.

I'm going to show you the exact errors that cost you points, how to spot them yourself, and how to fix them before you hit submit.

Why IELTS General Training Letters Are Sneakier Than They Look

Task 1 is worth one-third of your Writing score. One-third. You've got 20 minutes to write 150 words minimum, follow a specific format, and nail four band descriptors: Task Response, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy.

Most students focus only on tone. They ask, "Is my letter polite enough?" They miss the fact that examiners mark you on the same criteria they use for Task 2 essays. Your grammar, vocabulary range, and logical flow matter just as much in a complaint letter as they do in a 250-word essay.

Band 7 and above demand precision. You can't afford careless errors, especially ones that tank your Grammatical Range and Accuracy score.

Error #1: Mixing Formal and Informal Tone (The Biggest Band Killer)

Tone inconsistency drops you faster than anything else. You'll open with "Dear Sir or Madam" and then write "I'm really upset about this situation." That's not a formal letter. Real formal letters keep their register consistent from start to finish. If you're struggling with this balance, our guide on moving from Band 6 to Band 7 with formal letter tone breaks down exactly what examiners expect.

The second version uses stronger vocabulary ("lodge a formal complaint," "fell significantly short," "reasonably expect") and maintains distance. The first uses conversational language ("absolutely disgusting," "couldn't eat any of it") that belongs in a text to a friend, not to a business.

This error hurts two things at once: Task Response and Lexical Resource. Examiners need to see you understand the register required for formal correspondence.

Error #2: Skipping the Letter Format Structure

Your letter needs these elements in this order: sender's address (optional but safer to include), date, recipient's address, salutation, body paragraphs, closing, and signature. Missing even one costs you Task Response points because you haven't completed the task.

Here's what most students get wrong:

• They skip the date. Include it. Always.
• They forget the recipient's address. If the prompt gives it, use it.
• They end with "Yours faithfully" or "Yours sincerely" but then type their name instead of signing it. Handwritten signatures aren't expected in IELTS, but "Signature" or just your typed name works. Never end with "Best regards" in a formal letter to an unknown recipient.
• They address the letter to "To whom it may concern" when they've been given a specific name. If the prompt says "write to the manager," address them properly, even if it's "Dear Manager" or "Dear Sir/Madam."

Error #3: Unclear Pronouns and Reference Problems

This is where most students lose coherence points. You write about a booking, then mention "it," but the reader isn't sure what "it" refers to. In a 20-minute rushed letter, this happens constantly.

The second version uses the actual hotel name, dates, and specific nouns ("the reception staff," "the booking") instead of relying on pronouns. The reader never has to guess what you're talking about. That alone improves your Coherence and Cohesion band.

Error #4: Grammar Mistakes That Scream Band 6

Common grammar errors in IELTS letters cost you Grammatical Range and Accuracy points. Here are the ones I see constantly:

• Subject-verb agreement confusion: "The staff at the hotel were unhelpful" (plural: correct) vs "The staff at the hotel was unhelpful" (wrong when referring to multiple staff members).
• Tense inconsistency: "I visited the restaurant last week and I am not satisfied with the service." That's past and present perfect mixed without reason. Stick to one tense when describing a single event.
• Missing articles: "I stayed at hotel" (wrong) vs "I stayed at the hotel" (correct). Articles seem small until an examiner counts three of these errors in one letter.
• Awkward passive constructions: "A mistake was made by the restaurant" sounds clunky. Better: "The restaurant made a mistake" or "The error occurred because..."

Notice the differences: "inform about" vs "inform you of" (correct preposition); "I have faced" vs "I have encountered" (more formal register); "would like to request" vs "request" (adds politeness and sophistication).

Error #5: Repeating the Same Words Over and Over

You write "I am unhappy" three times in one letter. Then "I think the staff were rude" when you could write "The staff displayed an unacceptable lack of professionalism." Repetition damages your Lexical Resource score because examiners want to see vocabulary range.

Band 7 letters use synonyms and varied expressions:

• Instead of repeating "very bad": use "substandard," "unsatisfactory," "unacceptable," "disappointing"
• Instead of repeating "I want": use "I would appreciate," "I request," "I insist on," "I expect"
• Instead of repeating "the problem": use "the issue," "the matter," "this situation," "this concern"

The second uses four different negative descriptors instead of repeating "bad," and it varies sentence structures. That's Band 7 vocabulary work.

Error #6: Missing What the Task Actually Asks You to Do

The prompt says "write a letter to the hotel manager requesting compensation and an explanation." You write a polite letter expressing dissatisfaction but forget to explicitly request both items. Task Response: marked down.

Always underline or highlight the action words in the prompt:

• Request means ask for something clearly
• Complain means explain the problem in detail
• Apologize means say sorry and explain why
• Inquire means ask questions
• Suggest means offer solutions

If the prompt asks you to do three things, your letter should have three clear sections addressing each one. Don't bury your request in vague language. Say it directly in a dedicated paragraph.

Error #7: Word Count Surprises

The minimum is 150 words. Most examiners won't count, but if your letter hits 140 words, you'll lose Task Response points for not meeting the requirement. If you write 300 words in 20 minutes, you've sacrificed quality for bulk.

The sweet spot is 170-200 words. This gives you room to develop ideas without rushing, but keeps you focused and tight. Count your words before you submit every practice letter. Do this every time until it becomes automatic.

Your Pre-Submission Checklist for IELTS Letter Writing Mistakes

Don't wait for test day to discover these errors. Use this checklist on every practice letter:

1. Format check: Date included? Salutation appropriate? Closing formal? Signature present?
2. Task check: Does your letter address every instruction in the prompt? Highlight your action words and verify you have completed each one.
3. Tone check: Read your letter aloud. Does it sound formal throughout? If you have used contractions like "I'm" or "don't," remove them.
4. Grammar check: Scan for tense consistency. Flag any sentence longer than 25 words and simplify it. Verify subject-verb agreement in every clause.
5. Vocabulary check: Search for repeated words. Use Find and Replace in Word to highlight "very," "bad," "good," "problem," "want." If you have used any more than once, replace with alternatives.
6. Pronoun check: Every "it," "this," "that" should have a clear antecedent. If you hesitate for even a second, replace it with a specific noun.
7. Word count check: Count and record. Under 150? Add detail. Over 220? Cut ruthlessly.

This checklist takes 5 minutes per letter. It's the difference between a 6.5 and a 7.

Common Salutation and Closing Mistakes

The way you open and close your letter signals formality to the examiner. When you are working on proper salutations and formal greetings, remember these rules:

If you know the person's name, use "Dear Mr. Smith" or "Dear Ms. Johnson." If you don't, use "Dear Sir or Madam." Never guess the gender and use "Dear Sir" alone. That's outdated.

Your closing must match your opening. "Dear Sir or Madam" pairs with "Yours faithfully." "Dear Mr. Johnson" pairs with "Yours sincerely." These aren't arbitrary. They're part of the formal letter code.

When Your Letter Sounds Too Informal

You have probably heard that formal letters need to avoid contractions. That's true. But there's more to it. Formal letters also avoid:

• Emojis or exclamation marks (use periods)
• Phrases like "just wanted to let you know"
• Slang or casual intensifiers ("really," "so," "actually")
• Addressing the reader by first name unless they have explicitly asked you to
• Humor or sarcasm

A simple test: would you write it this way in an email to your boss? If not, it doesn't belong in a formal letter.

How an IELTS Formal Letter Evaluation Works

Examiners use a detailed band descriptor rubric to score your IELTS letter. They assess four criteria: whether you completed the task (Task Response), how well you organized and connected your ideas (Coherence and Cohesion), the range and accuracy of your vocabulary (Lexical Resource), and the range and accuracy of your grammar (Grammatical Range and Accuracy). Each criterion has equal weight. A single weakness in any area will lower your band. Use an IELTS essay checker or our free letter evaluation tool to see how you score across all four areas before test day.