Here's the thing: examiners don't just care about what you say in your IELTS Task 1 letter. They care about how it looks on the page. Sloppy formatting, missed punctuation marks, and weird spacing can actually cost you points in Coherence & Cohesion, even if your vocabulary is stellar.
Most students lose 1 to 3 band points because they don't know the specific rules for formal letter structure. This isn't about being pedantic. It's about showing the examiner you understand professional communication standards. That's what separates a Band 7 from a Band 8.
We're going to walk through every formatting rule, show you exactly where students mess up, and give you a checklist you can use before you submit any letter. Sound good?
The IELTS band descriptors for Writing Task 1 don't explicitly say "format" as a separate scoring category. Instead, formatting problems show up under Coherence & Cohesion and Grammatical Range & Accuracy. A letter with no clear structure signals disorganization to the examiner. Missing punctuation signals carelessness.
Think about it from the examiner's perspective. They see hundreds of letters every single week. A cleanly formatted letter with correct spacing and punctuation takes 10 seconds to skim and registers as professional. A messy one? They notice the problems before they even read the content.
Here's a concrete number: approximately 30% of General Training Task 1 letters have at least one format or punctuation error. Most of those errors are completely preventable with a quick checklist.
Every formal IELTS letter has three parts: the opening (sender's address and date), the letter body, and the closing (sign-off and name). Spacing between these parts is crucial—it's what makes the letter actually readable.
Let me show you what this actually looks like in practice.
Good:
123 Oxford Street
London SW1A 1AA
United Kingdom
15 August 2026
The Manager
Customer Service Department
ABC Bank
456 Finance Road
London EC2A 1BB
Dear Sir or Madam,
I am writing to complain about the poor service I received at your branch last week. On 10 August, I visited your Oxford Street location to open a new account. Despite arriving 20 minutes early, I was forced to wait over 45 minutes without explanation.
The staff member who eventually assisted me was dismissive and unprofessional. When I asked about account features, she gave me only basic information and appeared unwilling to help further.
I would appreciate a formal apology and an explanation for this unacceptable service. I look forward to hearing from you within 10 business days.
Yours faithfully,
John Smith
See that spacing? It's consistent and clear. One blank line between sections. Commas after the greeting and closing. No strange spacing quirks that make it hard to follow.
Most students get the commas right but mess up something else entirely. Let's break down what the examiners actually check for.
This is where about 40% of letter punctuation errors happen. The rule is simple but strict: you must put a comma after "Dear Sir or Madam," and after your closing phrase ("Yours faithfully," or "Yours sincerely,").
Weak: Dear Sir or Madam
I am writing to request information about your summer courses.
Good: Dear Sir or Madam,
I am writing to request information about your summer courses.
Same rule applies to your closing.
Weak: Yours faithfully
Sarah Johnson
Good: Yours faithfully,
Sarah Johnson
You don't need commas between address lines. Write each line on its own. If you write the address in one paragraph (unusual but possible), separate each part with a comma and a space.
Good (separate lines): 42 Maple Avenue, Leeds, LS2 9ET, United Kingdom
This follows standard English rules. Use periods at the end of sentences. Use commas to separate clauses and list items. Don't over-punctuate or add commas where they don't belong.
Weak: I would like to book a room, for next month, from the 5th, to the 12th, of September. I need a double bed; a balcony; and Wi-Fi access.
Good: I would like to book a room for next month from 5 to 12 September. I need a double bed, a balcony, and Wi-Fi access.
This choice matters because it affects your closing. Get it wrong and the examiner notices immediately.
Use "Dear Sir or Madam," when the letter prompt doesn't give you a name. This is the safe option. It pairs with "Yours faithfully," (note: faithfully, not sincerely).
Use "Dear Mr. [Name]," or "Dear Ms. [Name]," when you're given a specific name. This pairs with "Yours sincerely," (note: sincerely, not faithfully).
Tip: The British convention matters here. "Faithfully" goes with unknown recipients. "Sincerely" goes with named recipients. Swap them and the examiner notices the error.
If you don't know someone's gender, use "Dear [First and Last Name]," or stick with "Dear Sir or Madam,".
Spacing isn't just about looks. The IELTS band descriptors reward letters that are "well organized" and "easy to follow." Proper spacing is a big part of that organization.
Leave one completely blank line between these sections:
This might sound like a lot, but it's standard formatting. The examiner expects it every single time.
Tip: Don't add extra spacing by pressing Enter three or four times. One blank line means one press of Enter between lines of text. Not two. Not three.
Some students add indentation at the start of paragraphs. Don't do this. IELTS letters use flush-left formatting for the body. The blank line between paragraphs shows where the new paragraph begins.
Weak: [5-space indent] I am writing to request a refund for my recent purchase.
Good: I am writing to request a refund for my recent purchase.
Let me show you the three errors that appear in almost 50% of student letters. Once you know what to look for, they're easy to catch and fix.
Students sometimes run their paragraphs together with just one line break. This makes the letter hard to scan and signals a lack of organization.
Weak: I am writing to complain about the faulty laptop I purchased from your store.
The device stopped working after only two weeks of normal use.
I have attached the receipt as proof of purchase and would like a full refund.
Notice how hard that is to read quickly? Now add the blank lines back in.
Good: I am writing to complain about the faulty laptop I purchased from your store.
The device stopped working after only two weeks of normal use.
I have attached the receipt as proof of purchase and would like a full refund.
See the difference? The examiner reads it faster and immediately sees that you understand structure.
This happens constantly. Students write "Dear Sir or Madam" without the comma. It's a small error, but examiners pick up on it and it affects your Grammatical Range & Accuracy score.
Weak: Dear Sir or Madam
I am writing to inquire about job vacancies.
Good: Dear Sir or Madam,
I am writing to inquire about job vacancies.
Students mix up "Yours faithfully" and "Yours sincerely" or use casual closings like "Best regards" or "Thanks". In formal British IELTS letters, you have exactly two options.
Weak: Best wishes,
Tom Richardson
Good: Yours faithfully,
Tom Richardson
Before you finish any IELTS Task 1 letter, go through this 60-second check. It catches roughly 90% of format errors that students make.
If you answer "yes" to all of these, your formatting is solid and won't lose you unnecessary points.
If you're working on improving your overall letter writing, our guide on formal letter tone covers how to maintain the right register throughout, which pairs perfectly with correct formatting. You can also try our free IELTS writing checker to catch formatting issues and other errors before submission.
Our IELTS writing checker catches formatting errors, punctuation mistakes, and spacing issues before you submit. Get instant feedback on your Task 1 letters and see exactly where you might lose band points.
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