Have you ever stared at an IELTS General Training Task 1 prompt asking you to write to a friend, only to freeze because you’re not sure how informal you should be? You’re not alone. Every day, thousands of IELTS candidates lose valuable band scores simply because they don’t understand the subtle art of informal letter writing. In this complete guide, I’ll show you exactly how to craft an informal letter that impresses IELTS examiners and secures the band score you need.

Quick Answer: What Makes a Band 7+ Informal Letter?

An informal letter in IELTS General Training Task 1 requires: conversational tone, appropriate greeting (Dear + first name), 3-4 clear paragraphs covering all bullet points, personal anecdotes, contractions (I’m, don’t, can’t), phrasal verbs, closing phrase (Best wishes, Take care, etc.), and 150+ words written in 20 minutes. The key difference from formal letters is the warm, friendly style that mirrors how you’d write to someone you know personally.

Why Informal Letter Writing Matters for Your Band Score

IELTS General Training Task 1 contributes to 33% of your overall writing band score. While many candidates focus heavily on Task 2 essays, neglecting Task 1 can significantly drag down your final result. The ability to switch between formal and informal registers demonstrates sophisticated language awareness—something examiners specifically look for in Band 7+ responses.

Informal letters typically appear when you’re writing to friends, family members, or acquaintances. Common scenarios include:

• Inviting a friend to visit or attend an event
• Thanking someone for a gift, help, or hospitality
• Apologising for missing an occasion or making a mistake
• Recommending a place, book, or experience
• Sharing news about a recent change in your life
• Requesting help or advice from someone you know

Mastering this task type not only boosts your Task 1 score but also improves your cohesion and coherence skills—directly benefiting your Task 2 performance.

Step-by-Step Guide to Writing an Informal Letter

Step 1: Analyse the Prompt (2 minutes)

Before writing anything, carefully read the task. Identify:

• The recipient: Who are you writing to? (friend, neighbour, relative)
• The purpose: Why are you writing? (thank, apologise, invite, recommend)
• The bullet points: What three things must you include?

Underline key information and make a quick mental plan. This two-minute investment prevents costly mistakes and ensures you address all parts of the task.

Step 2: Choose an Appropriate Opening (1 minute)

Informal letters begin with warmth. Use the recipient’s first name:

• Dear Sarah,
• Dear John,
• Dear Aunt Mary,

Avoid formal openings like “Dear Sir/Madam” or “To whom it may concern.” These immediately signal that you don’t understand register, which limits your score to Band 5 or below.

Step 3: Write an Engaging Opening Paragraph (3 minutes)

Your first paragraph should acknowledge your relationship and state the purpose. Don’t simply repeat the prompt—add a personal touch:

Weak: I am writing to invite you to my birthday party.
Strong: It’s been ages since we last caught up! I’m dropping you a line because I wanted to let you know about a little celebration I’m planning next month.

Notice how the stronger version uses conversational language (“ages,” “dropping you a line,” “caught up”) and shows enthusiasm.

Step 4: Develop Your Main Body (10 minutes)

Divide the bullet points into two paragraphs. Each paragraph should:

• Address one or two bullet points fully
• Include specific details and examples
• Use informal linking words (Anyway, By the way, Speaking of which)
• Demonstrate a range of vocabulary and grammar

Example paragraph:

The party’s going to be at my new flat in Manchester on the 15th of June. I know you haven’t seen the place yet, so I’m really excited to show you around. It’s a bit small, but it’s got this amazing view of the canal. I’m planning to start around 7 pm, and there’ll be plenty of food and drinks. Nothing fancy—just a casual get-together with a few friends.

This paragraph covers two bullet points (invitation details and what will happen) while maintaining a friendly, conversational tone.

Step 5: Conclude Warmly (2 minutes)

Your final paragraph should:

• Mention future contact or expectations
• Express emotion appropriate to the situation
• Sign off with warmth

Examples:

• “I really hope you can make it—it wouldn’t be the same without you!”
• “Let me know what you think. I’d love to hear your thoughts.”
• “Can’t wait to see you and catch up properly.”

Step 6: Choose an Appropriate Sign-off (1 minute)

Use friendly closings followed by your first name:

• Best wishes,
• Take care,
• Love,
• All the best,
• See you soon,

Avoid formal closings like “Yours faithfully” or “Yours sincerely”—these belong in formal letters.

Common Mistakes to Avoid

Mistake 1: Mixing Formal and Informal Language

Many candidates confuse formal and informal register. Don’t write “I am writing to inform you that I shall be hosting a party” to a friend. Instead: “I’m throwing a party and I’d love you to come!”

Mistake 2: Overusing Contractions

While contractions are appropriate in informal letters, don’t use them exclusively. Show the examiner you can use full forms too—vary your language to demonstrate range.

Mistake 3: Missing Bullet Points

Task achievement is crucial. If you miss a bullet point, your score is capped at Band 5 for Task Response. Always check that you’ve addressed everything in the prompt.

Mistake 4: Being Too Casual

While informal, this is still an exam. Avoid slang, text message abbreviations (LOL, btw, gr8), and overly emotional language. Strike a balance between friendly and appropriate.

Mistake 5: Writing Too Little

You must write at least 150 words. Falling short results in automatic penalties. Aim for 160-180 words to be safe.

Pro Tips for Band 7+

Tip 1: Use Phrasal Verbs Naturally

Phrasal verbs demonstrate natural English usage. Sprinkle them throughout:

• “I came across this amazing café”
• “We’re looking forward to seeing you”
• “I’ve been getting on well at work”
• “Please come up with some ideas”

Tip 2: Include Exclamation Marks (Sparingly)

Exclamation marks convey enthusiasm in informal writing: “It was such a lovely surprise!” However, don’t overuse them—two or three per letter is sufficient.

Tip 3: Reference Shared Memories

Mentioning previous experiences creates authenticity: “Remember that tiny Italian place we went to in Brighton? I’ve found somewhere similar!”

Tip 4: Ask Questions

Questions make your letter interactive: “How’s your new job going? Are you still enjoying it?” This demonstrates genuine engagement with the reader.

Tip 5: Use Discourse Markers

Link your ideas smoothly with informal connectors:

• Anyway (to change topic)
• By the way (to add information)
• To be honest (to express opinion)
• Actually (to correct or clarify)
• Guess what (to share news)

Sample Informal Letter (Band 8+)

Task: You recently moved to a new city. Write a letter to your friend. In your letter:

• Explain why you moved
• Describe your new accommodation
• Invite your friend to visit

Dear Maria,

How are you doing? It’s been far too long since we last spoke! I’m dropping you a line to fill you in on some pretty big news—I’ve actually moved to Edinburgh!

You remember how I’d been complaining about my job in London being a dead end? Well, I finally plucked up the courage to apply for that position at the university library, and I got it! I started three weeks ago, and so far, I’m really enjoying the change of pace. The people are lovely, and the work is much more interesting than what I was doing before.

Anyway, I know you’re wondering where I’m living now. I’ve managed to find a gorgeous little flat in Stockbridge, which is this charming area about twenty minutes from the city centre. It’s got two bedrooms, a proper kitchen (finally!), and best of all, there’s a small garden I can sit in when the weather’s nice. It’s a bit smaller than my old place, but it feels so much more like home already.

By the way, I’d love for you to come and see it for yourself! Why don’t you come up for a weekend next month? We could explore the city together—the castle is absolutely stunning, and I know some great places for coffee now. It would be brilliant to catch up properly.

Let me know what you think! I’d really love to see you.

Best wishes,

Sarah

Why this scores Band 8+:

• All three bullet points are fully addressed with natural development
• Consistent, appropriate informal tone throughout
• Wide range of vocabulary (dead end, plucked up the courage, gorgeous, charming)
• Varied grammatical structures with accurate use of contractions
• Natural organisation with clear paragraphing and informal linking
• Personal touches that create authenticity

Frequently Asked Questions

How do I know if the letter should be formal or informal?

Look at who you’re writing to. Friends, family, neighbours, and people you know well = informal. Officials, companies, institutions, or people you don’t know = formal. If you’re unsure, check our formal letter guide for comparison.

Can I use slang in an informal letter?

Avoid strong slang and definitely avoid text abbreviations. Mildly informal expressions like “catch up,” “drop someone a line,” or “pretty big” are fine and actually help your score. However, expressions like “mate,” “gutted,” or “chuffed” might be too regional or informal for an international exam.

What if I don’t have ideas for the bullet points?

Draw from your own experience or imagine realistic scenarios. The examiner doesn’t fact-check your content—they assess your language. If the prompt asks you to describe a place, think of somewhere you’ve visited or invent a plausible location. What matters is the quality of your English, not the accuracy of your content.

Should I write addresses on the letter?

No. IELTS letters do not require addresses. Simply start with the greeting (Dear…) and end with your sign-off and name. Including addresses wastes time and doesn’t contribute to your score.

How can I improve my informal letter writing quickly?

Practice with real exam prompts under timed conditions. Analyse band 8+ samples and note the vocabulary and structures used. Most importantly, get feedback from a teacher or use our band descriptor guide to self-assess your work.

Ready to Master IELTS General Training Task 1?

Informal letter writing doesn’t have to be intimidating. With the right structure, vocabulary range, and understanding of register, you can confidently tackle any Task 1 prompt. Remember: the examiner wants to see that you can communicate naturally and appropriately in English.

Looking for more IELTS Writing guidance? Check out our complete guides on essay planning, writing strong body paragraphs, and mastering conditionals for Band 7+. Start practising today, and watch your confidence—and your band score—soar!