IELTS Writing Task 1 Letter Closing Checker: Formal vs Informal Sign-Offs

Here's the thing: most students bomb their IELTS letters not because they can't write, but because they close them wrong. You'll spend 18 minutes crafting a perfect complaint letter to a hotel manager, then sign off with "LOL, cheers!" and watch your Coherence & Cohesion score tank.

The letter closing is the last thing your examiner reads. It sticks. A sloppy, mismatched sign-off tells the examiner you don't understand register, and register is worth real points under the Lexical Resource and Task Response criteria. In fact, the IELTS band descriptors specifically reward candidates who maintain appropriate formality throughout, including the closing.

This guide walks you through exactly which closings work for formal letters, which ones work for informal ones, and how to avoid the mistakes that cost students 0.5 to 1 full band points. Whether you're checking your work or using an IELTS writing checker to analyze your closing, these rules are non-negotiable.

Why Your IELTS Letter Closing Matters More Than You Think

You've got 20 minutes for Task 1. You're writing 150 words minimum. With that time pressure, it's tempting to rush the ending and just scribble whatever comes to mind. That's the mistake.

The closing does three critical jobs at once. First, it signals to the examiner whether you understand the letter type. Second, it anchors your register choice; one careless word can undo 19 minutes of careful formality. Third, it demonstrates control over Grammatical Range & Accuracy because the sign-off structure (salutation + closing phrase + signature) has precise rules.

Let me be blunt: examiners notice when you close a formal complaint letter with "See you soon!" They notice. And they mark you down.

Formal Letter Sign-Offs: What Actually Works for IELTS Task 1

Formal letters in IELTS Task 1 include complaints to companies, requests for information from organizations, formal apologies, and official inquiries. You'll recognize these because the prompt tells you to write to someone you don't know, or to an institution.

Here are the closings that work:

• Yours faithfully, (UK English, when you open with "Dear Sir or Madam" because you don't know the person's name)
• Yours truly, (American English, same situation)
• Yours sincerely, (UK English, when you know the recipient's name—like "Dear Mr. Johnson")
• Sincerely, (American English, when you know the name)

That's it. Those four. Not "Best regards." Not "Kind regards" (that's email-speak). Not "Respectfully." Those are all too casual or too unusual for IELTS formal letter closing conventions.

Notice the structure: closing phrase on its own line, then your name below it. One line of space between the closing and your name. No email address, no job title, no extra fluff.

Informal Letter Closings: Warm Without Overdoing It

Informal letters in IELTS include writing to a friend, writing to a family member, or writing to someone you already know. The prompt will say something like "You have received a letter from your English-speaking friend" or "Your friend has invited you to an event."

You get more flexibility here, but don't go crazy. These work:

• Best wishes,
• All the best,
• Kind regards,
• Take care,
• Warm regards,
• Cheers,

You can also add the person's first name to some of these: "Best wishes, Alex" or "All the best, Jamie." This personal touch shows confidence and natural register control.

The difference is subtle but real. "All the best" feels warmer and more personal than "Yours sincerely," which would feel stiff between friends. The examiner is checking whether you match register to relationship.

Letter Closings That Will Definitely Hurt Your IELTS Score

These show up far too often in student work. Avoid them completely.

This is way too casual for a formal complaint. "Thanks a lot" sounds like you're ending a text conversation, not closing an official letter to a company.

You've just written a casual letter to your mate about weekend plans. Then you close with "Yours sincerely," which signals formal distance. It's a register mismatch that costs you marks.

This isn't a proper closing phrase. "Hope to hear from you soon" is a sign-off, but it's incomplete. You need a formal closing phrase (like "Yours sincerely") or a warm one (like "All the best"), not both mixed together and abbreviated.

Do not sign with x's or other symbols. Write your name. That's it.

Formal vs Informal: Side-by-Side Comparison

Let's look at the same scenario handled two different ways. Imagine you're responding to an invitation.

Scenario A: Formal letter (responding to an invitation from a university admissions office to attend an official event)

Scenario B: Informal letter (responding to a friend's invitation to a birthday party)

The formal version uses "Yours sincerely," "delighted," and your full name. The informal one uses "All the best," enthusiasm, and just your first name. Both match their context perfectly. When you're working on the overall tone and structure of your letter, our guide on formal vs informal register breaks down how to maintain consistency from opening to closing.

How to Format Your Closing: Punctuation and Layout

Format matters on IELTS. Examiners grade you partly on presentation. Here's what trips students up:

Wrong punctuation:

• "Yours sincerely;" (semicolon, not comma)
• "Yours sincerely" (no punctuation at all)
• "Yours Sincerely," (capital S; only capitalize the first letter)

Wrong spacing:

• Closing and name on the same line (should be two lines)
• Multiple blank lines between them (one line is standard)
• Adding your phone number, email, or job title (unnecessary for Task 1)

Your examiner is looking for evidence that you can structure a letter correctly. A messy closing loses you 1-2 marks under Coherence & Cohesion, and it signals carelessness. If you're concerned about your overall letter structure, check out our resource on common letter format errors to make sure every section is polished.

Choose the Right Closing Every Time: A Simple Decision Tree

Stop overthinking this. Use this decision tree to nail your letter ending:

Step 1: Do you know the recipient's name?

• Yes, you know their name (or it's given in the prompt like "Dear Mr. Ahmed"): use "Yours sincerely" (UK) or "Sincerely" (US).
• No, you don't know their name (you're writing "Dear Sir or Madam"): use "Yours faithfully" (UK) or "Yours truly" (US).

Step 2: Is the letter formal or informal?

• Formal (to a company, organization, or stranger): stick to the four options above.
• Informal (to a friend, family member, or someone you know): pick from "Best wishes," "All the best," "Take care," or "Cheers."

Step 3: Write your name below the closing, one line gap. Done.

What Examiners Grade in Your IELTS Letter Closing

The band descriptors for Writing Task 1 don't mention closings by name, but they grade you on Task Response (doing what the prompt asks) and Coherence & Cohesion (organizing your letter logically and matching register). Your closing touches both.

A Band 7+ closing tells the examiner: "This candidate understands register. They know the difference between formal and informal. They can structure a letter correctly. They control grammar and punctuation even in the small details." That's what you're shooting for.

A Band 5-6 closing shows some awareness but inconsistency. Maybe the letter is mostly formal, but the closing is casual. Or the punctuation is sloppy. These add up.

A Band 4 or lower closing ignores register entirely. Formal complaint ends with "LOL, see ya!" That's the difference. If you want to check your essay using our free IELTS writing checker and get detailed feedback on your register consistency, our tool analyzes your closing alongside the rest of your letter.

Frequently Asked Questions About IELTS Letter Closings