Splitting bills — with a partner, flatmates, or friends — goes wrong when it's never actually discussed. People assume different things and resentment builds. The fix is a clear, agreed method everyone signs off on.

Pick a method that fits

  • Even split: simple and fair when incomes are similar. Everyone pays the same share.
  • Proportional split: each pays a share matching their income — fairer when earnings differ a lot.
  • Itemised: you pay for what you use (good for groceries and one-offs).
  • Hybrid: even split on rent, itemised on the rest.

Make it frictionless

  • Use a bill-splitting app or a shared spreadsheet so nobody's chasing money.
  • Consider a shared account everyone pays into for joint costs.
  • Settle up on a regular schedule, not randomly.
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Say it early

The awkward money conversation is much easier before you move in or book the trip than after the first lopsided bill. Agree the rule up front.

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Related

For the couple version, see what to discuss before moving in together.