Household Bills · 6 min read

Splitting rent and bills with flatmates without falling out

Most flatshare arguments are not about money, they are about an unwritten rule nobody agreed to. Here is what to settle in the first week.

Krish Dalal

Founder and editor, PaisaExpert. Master's in Business Management, SP Jain School of Global Management, London. · Last updated 2026-08-26

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Flatshares rarely break down over the amount. They break down over the sense that someone is getting a better deal, which is what happens when three unequal rooms cost the same and nobody said anything at the start.

Rent: split by what people actually get

RoomTypical share of total rent
Master bedroom with attached bathroom40 to 45%
Second bedroom, shared bathroom30 to 35%
Smallest room or box room22 to 28%
Balcony, parking, extra storageAdd 2 to 5% to whoever uses it

Agree these percentages before signing, write them in a message everyone can find later, and stop discussing it. A ten-minute conversation in week one prevents the one in month eight.

Bills: one payer, fixed transfers

  • Put electricity, broadband, gas and maintenance on one person's name and card. Chasing four people for four different bills is where the resentment starts.
  • Everyone else pays a fixed amount by standing instruction on a set date. Fixed, not actual, because a variable ask every month is a monthly negotiation.
  • Reconcile the difference once a quarter, not monthly. Summer electricity will run over, winter will run under, and it broadly evens out.
  • Broadband and OTT subscriptions are the easiest saving in a flatshare. Our subscription audit usually finds two people paying for the same thing.

Frequently asked

Only if the rooms are genuinely equal, which they almost never are. Splitting by room size and whether a bathroom is attached is fairer and, more usefully, it removes the low-grade resentment that builds when someone with a much smaller room pays the same. Agree the percentages before anyone moves in.

What to do next

  1. Agree rent percentages by room before signing anything.
  2. Put every bill on one payer and set standing instructions for the rest.
  3. Record who paid what of the deposit, on the day, in writing.

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