Journal · Friends and money
Splitting a birthday dinner when one person is the guest of honour
Treat the birthday person by splitting the bill among the people paying, with options for big orders.
It is a friend's birthday, and the group wants to treat them. Lovely idea. But how do you split their share without making the bill complicated?
The simple method
- Add up the whole bill, including the birthday person's food and drinks.
- Divide it by the number of people paying, not the number of people eating.
Six friends take a seventh out for dinner. The bill comes to S$420. Six people pay, so each pays S$70.
If orders were very different
If some people ordered much more than others, split the bill by item first. Then share the birthday person's part equally among everyone else.
For example, the birthday person's food and drinks came to S$60. Each of the six payers adds S$10 on top of their own order.
The cake and the gift
- Cake: if one person bought the cake, add it to the bill as a shared cost.
- Gift: treat the gift as a separate collection, so people who could not come to dinner can still join in.
Say it early
Agree on the plan in the group chat before the dinner: "Let's treat Mei, split six ways." It avoids the moment where the birthday person reaches for their wallet and everyone waves their hands.
Drinks
If a few people order expensive drinks, it is fair for them to pay those themselves. Shared food and the birthday person's share stay equal.
Return the favour
In regular groups, birthdays come round for everyone. Keeping the method the same each time means it evens out over the year.
With Perpax
Perpax, coming soon from Goldmend Money, will let you mark one person as a guest so their share is spread across everyone else automatically.
General information, not financial or legal advice. Figures are examples. Check your receipt and official sources.