What to write in a birthday card
Start with something specific about the person, add one wish for the year ahead, and sign off warmly. Two or three sentences is enough for most cards. For a milestone, say what the age means: a 21st card can nod to the key, from when 21 was the age of majority in Australia before the 1970s.
How to write a birthday card in three steps
- Start with them. Name one thing that is true about this person: a habit you love, something they did this year, a memory you share. Specific beats clever.
- Add a wish. One hope for the year ahead. It can be big (the trip, the new job) or small (more sleep, a better footy season).
- Sign off like you talk. "Love", "Cheers", "See you Saturday". Use the sign-off you would use in a text to them, then add your name so they know who wrote it.
Birthday card ideas beyond the message
If there is a party slideshow or a video message online, print a code inside the card with the QR code generator so they can find it again later.
- Write down one memory in full, with the place and the year. It is the line they will reread.
- For a partner or a best friend, list a handful of things you love about them, one per line.
- Tuck a printed photo of the two of you inside the card.
- For a milestone, write a real letter on a separate page and fold it into the card.
- Get the kids to draw on the inside cover, then write your message underneath.
- Write a short note to be opened on their next milestone, sealed in its own envelope.
- For a group gift, pass a physical card around the party or the office while the money is collected online, so everyone has somewhere to write.
Match the tone to the relationship
| Who it is for | Tone that works | How long |
|---|---|---|
| Partner | Heartfelt, private jokes welcome | As long as you like |
| Parent | Grateful, a little sentimental | Two to four sentences |
| Son or daughter | Proud, encouraging | Two to four sentences |
| Sibling | Cheeky, then one honest line | One to three sentences |
| Best friend | Funny, specific, a shared memory | One to three sentences |
| Colleague | Friendly and light, no age jokes | One or two sentences |
| Grandparent | Warm, thankful, family news | Two to four sentences |
What to write for a milestone birthday
Each milestone has its own angle. An 18th is about independence, a 21st about the key and becoming an adult, a 30th about growing into themselves, a 40th about the stories collected so far, and a 60th about family and what comes next. Keep humour about age kind: a joke that lands with a sibling can sting from a colleague.
Lines for a 50th are on the 50th birthday ideas page. For the party itself, see 21st birthday party ideas or birthday ideas for adults.
For how much to give, see how much to give for a birthday.
Signing a group birthday card at work
If there is a collection, chip in a small, optional amount; any amount is welcome. The group gift guide explains how it works.
- Read what others have written first, so you do not repeat the line above yours.
- One or two warm sentences is right for a colleague you do not know well.
- Use your full name if the office is large; first names are fine in a small team.
- Skip age jokes unless you know they would laugh.
Birthday messages by milestone
For an 18th
Independence, pride, and a little teasing.
- Officially an adult. You still have to come home for Sunday dinner, though.
- Eighteen years ago you turned our lives upside down, and we would do it all again.
- Welcome to signing your own permission slips. Use the power wisely.
- You have grown into someone I genuinely like hanging out with. That is the best present you could give me.
- Go and see things, try things, and make a few mistakes. Just text us when you get there.
- The world is not ready for you, and that is half the fun.
- You only get to be 18 once. Make it a year worth remembering.
- So proud of the person you are becoming. Buckle up.
For a 21st
The key, the speeches and the start of adult life.
- Here is your key, though you worked out how to get in late years ago.
- Twenty-one years of you, and every one of them has made us proud.
- Exactly the kind of adult I hoped you would be, and a lot more fun.
- May this key open every door you want, and keep shut the ones you do not.
- Consider this card your warning: the embarrassing stories are going in my speech.
- There is a big world out there, and you are ready for it.
- From your first day of school to whatever comes next, it has been a privilege to watch.
- Cheers to my favourite person to get into trouble with. Happy 21st.
For a 30th
Confidence, and a gentle "wiser now" joke.
- Thirty suits you. You finally seem to know exactly who you are.
- Thirty: the decade where a good night in beats a big night out. Mostly.
- The twenties were the rehearsal. This is the show.
- More packed into thirty years than most people manage in fifty. Cannot wait to see the next bit.
- Here's to a decade of better sleep, better wine and better decisions.
- I remember your 21st. Somehow we both survived it.
- Big love on your 30th. You make everyone around you braver.
- Thirty and thriving. Let me know when you need a nap.
For a 40th
Stories collected, and the best still ahead.
- Forty looks great on you, and so does the confidence that came with it.
- Enough good stories collected for a book by now, so start writing.
- Life begins at 40, apparently. Glad you got a head start.
- Four decades in and you are still the first person I want to tell good news to.
- The best is still ahead, and I plan to be around for it.
- Old enough to know better at 40, and young enough to do it anyway.
- Forty years of you being exactly yourself. Cheers to that.
- You make 40 look like something to look forward to.
For a 60th, 70th and beyond
Gratitude, family and the next chapter.
- We are lucky to have had sixty years of you making the people around you laugh.
- Wishing you a 60th as full of joy as the years that got you here.
- This family owes you so much. Today we get to give a little back.
- A calendar full of lunches and nobody to answer to. You have earned every bit of it.
- Seventy suits you. Here is to plenty more birthdays with all of us around the table.
- At 80 you are still the sharpest one in the room.
- Thank you for every story, every recipe and every bit of advice we did not take at the time.
- Still the life of the party at 60. Never change.
Birthday messages by relationship
For a partner
Make it personal; nobody else is reading.
- Another year of you being my favourite person. Lucky me.
- I love you more than I did last birthday, and I thought that was the limit.
- Ordinary days feel like a holiday with you around.
- Every cup of tea you have ever brought me in bed gets repaid today. I am on duty.
- My wish for you this year: more sleep, more beach, more of us.
- To the person who knows all my worst habits and stays anyway.
- Birthday breakfast is on me, and so is the washing up.
For family
Parents, kids, siblings and grandparents.
- To a parent: I turned out mostly fine, and that is down to you. Love you heaps.
- To a parent: you still give the best advice, even when I pretend not to listen.
- To a son or daughter: watching you grow up has been the best part of my life.
- To a son or daughter: every year you surprise me. This year, surprise yourself.
- To a sibling: you were my first friend and my first enemy. Glad we kept the first one.
- To a sibling: proof that the good genes went to the older one. Kidding. Mostly.
- To a grandparent: every Sunday lunch, every lolly slipped into my pocket, I remember them all. Thank you.
- To a grandparent: you always made our birthdays feel important, so this one is all about you.
- To an aunt, uncle or cousin: the fun one in the family since forever. Have a great day.
For a friend
Specific, a little cheeky, always warm.
- Thanks for being the friend who answers at 2am and never asks why.
- I like you a bit more each year, which is annoying, because you already know it.
- To another year of voice notes that are far too long.
- I hope this year is as good to you as you are to everyone else.
- You are the reason my best stories are my best stories.
- Repaying the favour of never forgetting my birthday, on time for once.
- No one makes a bad week better faster than you.
- Let's celebrate the way we always do: too much food and not enough sleep.
For a colleague or the office card
Short, friendly, no age jokes.
- Take the long lunch today. You have earned it.
- A relaxing day and a year of good things: that is the wish from all of us.
- Mondays are bearable because of you. Enjoy your day.
- All the best for the year ahead. Cake is in the kitchen.
- Best wishes for a brilliant birthday, from the desk next door.
- Hope your birthday runs as smoothly as everything you organise.
- Many happy returns. It is a pleasure working with you.
- Enjoy a day off from our questions. Back to normal tomorrow.
Add a group gift to the card
When the card is going around the office or the family, a shared gift can go with it: everyone writes a line and chips in to one bigger present instead of a pile of small ones.
- Create a free registry for the occasion.
- Add a wishing well.
- Share one link with everyone who wants to chip in.
- Buy the gift once you know the total.
Setting up a registry with a wishing well is free. Guests can chip in by bank transfer, in cash or in store with no EasyRegistry fee. Card and PayPal contributions are a Premium feature ($39 one time), and card funds are released when the registry closes.
How a group gift wishing well works, and how much to ask each person for
Birthday card FAQ
Something specific about the person, one wish for the year ahead, and a warm sign-off. Two or three sentences is plenty. A shared memory makes it personal.
Mention becoming an adult, and if a key is part of the night, use it as your theme. The key dates from when 21 was the age of majority in Australia, before the 1970s. Parents' cards can be sentimental; friends' cards can be cheeky. More ideas are in 21st birthday party ideas.
Keep it short and friendly: "Wishing you a relaxing day and a great year ahead" is enough. Add your full name so they know who it is from. Skip age jokes.
Say what it is for, not how much it is: "A little something toward the trip" works better than a figure. For how much to give, see how much to give for a birthday.
Match it to how you talk to them. Funny suits siblings and close friends, heartfelt suits partners and parents, and friendly and light suits colleagues. A joke followed by one honest line often does both.
Pair the card with a group gift
Set up a free birthday registry with a wishing well, share one link, and buy the gift once you know the total.