IELTS Writing Task 1 Letter Format Checker: Stop These 7 Common Mistakes Today

Here's the thing: examiners spend about 2-3 minutes reading your Task 1 letter. In that narrow window, they're forming a first impression that sticks. Format mistakes don't just look sloppy—they actively tank your band score because they affect the Task Response criterion, which counts for 25% of your writing mark.

Most students rush through letter formatting because they think it doesn't matter. It does. A poorly formatted letter screams "I don't know the conventions," and that costs you real points. You could have excellent vocabulary and grammar, but if your letter structure looks like it was written by someone who's never seen formal correspondence, you're capped at Band 6 or lower.

This guide walks you through the exact mistakes that pull down letter band scores, and more importantly, how to fix them so you hit Band 7 or 8 consistently. When you're ready to test your own work, our IELTS writing checker spots these format errors instantly and gives you specific band score feedback.

Mistake #1: Forgetting the Sender's Address (Or Putting It in the Wrong Place)

Your address goes at the top left. Not top right. Not centered. Top left, followed by a line break, then the date.

This is where most students mess up. You write:

What you should write:

Why? The examiner is checking whether you understand letter conventions. A formal letter always shows the sender's address first, then a blank line, then the date. The recipient's address goes below the date (though for IELTS Task 1, you usually don't include it because you're told who you're writing to in the prompt).

Mistake #2: Wrong Greeting (Or No Greeting At All)

The greeting isn't optional. It's the voice of your letter. Get it wrong and you're already off to a shaky start with the Task Response criterion.

Here's what students commonly do wrong:

• Write "Hi there" or "Hello" (too casual for formal letters)
• Write "Dear Mr./Ms. [Full Name]" when only a surname is given
• Forget to add a comma after the greeting
• Use "Dear Sir/Madam" for a letter to a named person (that's incorrect)

Notice the difference? The formal greeting signals to the examiner that you understand register. That's Band 7 level Lexical Resource. Stick to these rules:

• Unknown recipient = "Dear Sir or Madam,"
• Known recipient (name given) = "Dear Mr./Ms. [Surname],"
• Always use a comma after the greeting

Mistake #3: Rambling Paragraphs With No Clear Structure

Task 1 letters have a predictable structure. Ignore it and you lose marks for Coherence & Cohesion (another 25% of your score).

The structure is:

1. Opening paragraph: State why you're writing
2. Body paragraphs: Explain the situation and details
3. Closing paragraph: Say what you want or expect next

Most students write one giant wall of text. No line breaks. No paragraph divisions. It's exhausting to read and confuses the examiner about what your main points actually are.

See how the second version breaks the message into clear chunks? Each paragraph serves a purpose. The examiner can immediately identify your task response without squinting at a block of text.

Mistake #4: Inconsistent or Incorrect Closing Phrases

Your closing matters just as much as your greeting. This is where you sign off, and it has to match your formal tone.

Wrong closings you'll see from students:

• "Best regards" (acceptable but weak)
• "Thanks so much" (too casual)
• "Cheers" (way too casual)
• No closing at all (huge mistake)
• "Yours sincerely," when you wrote "Dear Sir or Madam," (register mismatch)

Here's the rule. Use it every time:

• Dear [Named Person] = Close with "Yours sincerely,"
• Dear Sir or Madam = Close with "Yours faithfully,"

Why these specific phrases? They're the standard convention in British English, which IELTS follows. Examiners see them as markers of someone who knows the rules. When you nail the closing phrase, you're showing professionalism on Lexical Resource.

Mistake #5: Wrong Tense or Register Shifts Inside the Letter

You start writing formally, then suddenly slip into casual language. That's a Lexical Resource problem, and it cuts into your band score.

The second version maintains formal register throughout. "Discourteous" instead of "rude." "Unacceptably low temperature" instead of "cold." "Highly unsatisfactory" instead of "really bad." That's Band 7-8 vocabulary consistency.

Task 1 letters demand consistent formal register from start to finish. No slipping. No "honestly" or "super" or "really." Stay professional or lose points.

Mistake #6: Missing or Weak Opening Statement

Your first sentence has one job: tell the reader exactly why you're writing. Not vaguely. Specifically.

The examiner needs to know instantly what you're asking for. "I am writing to..." is the gold standard opening. It's direct, formal, and clearly signals task response. You're immediately showing you understand the letter's purpose.

Weak openings like "I hope you are well" waste words and delay your main point. You have only 150-180 words in Task 1. Every word counts. If you want to improve your opening further, check out our guide on letter openers for more specific techniques.

Mistake #7: Ignoring Punctuation and Spacing Rules

Formatting isn't just about content. It's about how your letter physically looks on the page. Small spacing and punctuation errors compound and make your letter look sloppy.

Common spacing mistakes:

• No blank line between your address and the date
• No blank line between the date and the greeting
• No blank line between paragraphs
• Extra blank lines scattered randomly throughout

Common punctuation mistakes:

• Missing commas after the greeting (should be "Dear Sir or Madam," not "Dear Sir or Madam")
• Missing commas after the closing phrase (should be "Yours faithfully," not "Yours faithfully")
• Inconsistent date formatting (write it as "29 August 2026" or "August 29, 2026", not both styles in the same letter)

Here's the complete correct format:

One blank line between each section. Consistent punctuation. This is what Band 7-8 looks like visually.

How IELTS Examiners Score Task 1 Letters: The Breakdown

Task 1 writing is scored on four criteria, and format mistakes affect multiple scoring areas:

• Task Response (25%): Wrong format signals you didn't understand the letter task. That's an immediate hit.
• Coherence and Cohesion (25%): Poor paragraph structure makes your ideas hard to follow. Marks drop.
• Lexical Resource (25%): Register shifts from formal to casual tank your vocabulary band.
• Grammatical Range and Accuracy (25%): Not directly format, but formal letter structure requires complex sentence variety to nail this.

That means format mistakes don't just affect one criterion. They ripple across all four. A student who masters letter formatting but writes weak content might hit Band 6. A student with great ideas but sloppy format? Also Band 6. Both are capped by the same mistakes.

Real IELTS Task 1 Letter Example With Correct Format

Here's a complete example from an actual IELTS prompt:

The Scenario: Write a letter to a hotel manager about poor service you received during your stay.

Notice:

• Full address, properly spaced
• Specific date (not just "last week")
• Correct greeting with comma
• Clear opening statement of purpose
• Multiple body paragraphs with clear points
• Specific request in the closing paragraph
• Correct closing phrase for unknown recipient
• Typed name below closing

This letter follows every format rule and scores Band 7-8 on Task Response because the examiner can immediately see you understand what a formal complaint letter should look like. Use our free IELTS writing checker to analyze your own letters and receive instant feedback on format, structure, and band score.

What Makes a Formal Letter IELTS Task 1 Compliant

IELTS formal letter format requirements differ slightly from real-world business correspondence. You include your sender's address and the date, but typically omit the recipient's address (it's specified in the prompt). The greeting, body organization, closing phrase, and formal register mirror professional business letter standards. Focus on what IELTS Task 1 requires rather than corporate email conventions. Stick to the structure, maintain formal tone throughout, and use our IELTS writing correction tool to catch any deviations before exam day.