What do you write in a congratulations card?

A good congratulations card does one thing a group text cannot: it names what the win actually took. Anyone can type 'congrats'. The card that lands is the one that shows you were paying attention to the work behind the moment, not just the announcement of it. The most important thing is to include at least one specific detail only you would mention. You did it. Three years of night classes and you never once let me see you doubt it, even when I knew you did. I am so proud of you, and I cannot wait to watch what you build with this. Congratulations.

How long should a congratulations card be?

Three to five sentences is the right length for almost any card. A great short card always beats a long generic one.

What to write in a congratulations card: examples for any win

A good congratulations card does one thing a group text cannot: it names what the win actually took. Anyone can type 'congrats'. The card that lands is the one that shows you were paying attention to the work behind the moment, not just the announcement of it.

How to write it

Name the specific achievement, then point to the effort or the quality that earned it. Close with what you are looking forward to for them. Skip the cliches about doors opening.

Name the actual thing: the job title, the school, the milestone. Specifics read as attention.
Acknowledge the work behind it, not just the result. People remember being seen.
Keep your own story out of it. This card is about them.
Match the energy to the person. A close friend gets warmth and a joke; a colleague gets sincerity and brevity.
End with forward motion: what you are excited to watch them do next.

Examples

Real examples of congratulations cards by relationship. Use them as a jumping-off point — the best card is the one with at least one specific detail only you would mention.

For a friend

You did it. Three years of night classes and you never once let me see you doubt it, even when I knew you did. I am so proud of you, and I cannot wait to watch what you build with this. Congratulations.

For a coworker

Congratulations on the promotion. It is genuinely well earned, you have carried more than your share for a long time, and it is good to see it recognized. Looking forward to working with you in the new role.

For a sibling

Engaged! I could not be happier for you both. You have always been the one who knew exactly what you wanted, and watching you find it has been one of the great joys of being your sibling. Congratulations.

For a new graduate

Congratulations, graduate. You worked for this in a hundred quiet ways nobody clapped for, and it paid off. Whatever comes next, you have already proven you can do the hard version. So proud of you.

Etiquette

Send it close to the news, while the moment is still fresh. A late congratulations still counts, so send it anyway if you missed the window.
Avoid turning the card into advice. They want to be celebrated, not coached.