How much should housemates spend on shared groceries per week?

Most Australian share houses spend $40-60 per person per week on shared staples like milk, bread, eggs, cleaning products, and toilet paper. That's separate from whatever you spend on your own personal groceries. A 3-person house kitty of $150 a week covers the basics comfortably.

What groceries should be shared in a share house?

The essentials everyone uses: milk, bread, butter, eggs, cooking oil, rice, pasta, salt, pepper, coffee, tea, toilet paper, bin bags, dish soap, and cleaning spray. Keep the shared list short and universal. If not everyone uses it, it's a personal purchase.

How do you handle it when a housemate eats your food?

First, clearly separate shared from personal food — fridge shelves help. If it keeps happening, have a direct conversation. Most of the time it's carelessness, not malice. Label your stuff if you need to. If someone consistently ignores boundaries, that's a housemate problem, not a grocery problem.

Should a vegan housemate pay the same for shared groceries?

Only for items they actually use. There's no point splitting the cost of regular milk if one person drinks oat milk. Keep the shared list to things everyone uses — cooking oil, toilet paper, cleaning products, rice — and let specialty items be personal expenses.

Is it better to take turns buying groceries or use a shared kitty?

A shared kitty is fairer because it keeps contributions equal regardless of who shops. Taking turns works too, but whoever shops at the expensive store that week ends up paying more. The kitty removes that variable. Everyone pays the same, anyone can shop.

How do housemates split groceries when one person cooks for everyone?

If you do communal dinners, buy ingredients from the shared kitty and the cost is already covered. If one person cooks using their own money, they log the shared ingredients as a shared expense and get their share back. Keep personal specialty ingredients separate from what the house covers.

How to Split Groceries With Your Housemates

Groceries are the share house bill that starts fights. Not the electricity bill, not rent — groceries. Because someone always eats the last of the bread, nobody admits to finishing the milk, and the person who buys organic everything reckons the split should be equal. Let's sort this out properly.

Groceries Split Calculator

How to Split Groceries Fairly

1

Separate shared from personal

This is the golden rule of share house groceries. Shared staples — milk, bread, butter, eggs, cooking oil, toilet paper, dishwashing liquid — get split between everyone. Personal food — your specific snacks, meals, specialty items — is on you. Draw a clear line between the two and you'll avoid 90% of grocery arguments.
2

Create a shared staples list

Sit down with your housemates and agree on what counts as shared. Write it down. Common shared items include milk, bread, rice, pasta, cooking oil, salt, pepper, cleaning products, bin bags, toilet paper, and dish soap. If it's something everyone uses and nobody wants to buy individually, it goes on the shared list.
3

Set a weekly shared budget

Most share houses spend $40-60 per person per week on shared staples and household basics. Agree on an amount, have everyone transfer their share into a kitty or one person's account, and buy from that. A $50 per person weekly kitty for a 3-person house gives you $150 to cover all the shared basics. Do a couple of shops and adjust.
4

Assign the shopping rotation

Take turns doing the shared shop. In a 3-person house, each person does it roughly once every three weeks. The shopper buys from the agreed list, keeps the receipt, and gets covered by the shared kitty. Rotating means nobody gets stuck as the permanent grocery runner and everyone sees what things actually cost.
5

Log everything in one place

The shared shop is easy to track, but what about the random mid-week milk run or the cleaning products someone grabbed while they were out? These small purchases add up and get forgotten. Log every shared purchase as it happens — a quick entry in an app takes ten seconds and stops the 'I always buy more than everyone else' resentment.

Ways to Split Groceries

Method	How It Works	Best For	Fairness
Equal split	Everyone contributes the same amount to the shared grocery kitty each week. A $50 per person weekly contribution covers most shared staples for a 3-person house.	Houses where everyone eats roughly the same amount and agrees on what's shared.	Medium
Usage-based split	Track what each person actually consumes from shared groceries and adjust contributions accordingly. The person who drinks three litres of milk a week pays more than the one who barely touches it.	Houses where consumption varies wildly — one person hardly cooks at home while another eats every meal in.	High
Income-based split	Higher earners contribute more to the shared grocery kitty. This can fund higher-quality shared basics without anyone feeling priced out.	Mixed-income houses where some housemates are students and others are working full-time.	High
Cook-and-share rotation	Housemates take turns cooking dinner for the whole house using a shared food budget. Each person cooks once or twice a week. The cook buys ingredients from the shared kitty. Everyone eats, everyone contributes, everyone cooks.	Houses where housemates enjoy cooking and are happy eating communal dinners most nights. Builds community and often costs less per meal.	High

Groceries Costs in Australia

Stat	Value
Average weekly grocery spend per person (Australia)	$130
Average weekly household grocery spend	$178
Shared staples cost per person per week (share house)	$40-60
NSW average weekly household grocery spend (highest state)	$215
QLD average weekly household grocery spend	$186

Grocery cost estimates are based on publicly available consumer spending data from comparison sites. Actual costs vary by location, store, and shopping habits. Compare prices at Woolworths, Coles, or Aldi for your area.

Tips for Splitting Groceries

The fridge shelf system works

Assign each housemate a shelf in the fridge for personal food. Shared staples go on a designated shelf or in the door. It sounds rigid but it stops the 'who ate my yoghurt' argument that has ended more friendships than anyone admits.

Agree on brands upfront

If one housemate only buys organic free-range everything and another is strictly home-brand, the shared kitty needs a rule. Most share houses go mid-range for shared items. Save the fancy stuff for your personal stash.

Meal prep nights save everyone money

Cooking one big batch of something for the whole house costs way less per person than everyone making individual meals. A $25 bolognese feeds four people easily. Take turns and the grocery bill drops while the fridge fills up.

Track the little purchases

It's not the big weekly shop that causes resentment — it's the random milk, bread, and cleaning supplies one person keeps grabbing. Log every shared purchase, no matter how small. The $6 milk runs add up to real money over a month.

Handle dietary differences with grace

If one housemate is vegan, coeliac, or has allergies, don't force them to split the cost of regular bread or dairy milk. Keep the shared list to items everyone actually uses. Specialty alternatives are personal purchases.

Related Guides

Common Questions About Splitting Groceries

How much should housemates spend on shared groceries per week?: Most Australian share houses spend $40-60 per person per week on shared staples like milk, bread, eggs, cleaning products, and toilet paper. That's separate from whatever you spend on your own personal groceries. A 3-person house kitty of $150 a week covers the basics comfortably.
What groceries should be shared in a share house?: The essentials everyone uses: milk, bread, butter, eggs, cooking oil, rice, pasta, salt, pepper, coffee, tea, toilet paper, bin bags, dish soap, and cleaning spray. Keep the shared list short and universal. If not everyone uses it, it's a personal purchase.
How do you handle it when a housemate eats your food?: First, clearly separate shared from personal food — fridge shelves help. If it keeps happening, have a direct conversation. Most of the time it's carelessness, not malice. Label your stuff if you need to. If someone consistently ignores boundaries, that's a housemate problem, not a grocery problem.
Should a vegan housemate pay the same for shared groceries?: Only for items they actually use. There's no point splitting the cost of regular milk if one person drinks oat milk. Keep the shared list to things everyone uses — cooking oil, toilet paper, cleaning products, rice — and let specialty items be personal expenses.
Is it better to take turns buying groceries or use a shared kitty?: A shared kitty is fairer because it keeps contributions equal regardless of who shops. Taking turns works too, but whoever shops at the expensive store that week ends up paying more. The kitty removes that variable. Everyone pays the same, anyone can shop.
How do housemates split groceries when one person cooks for everyone?: If you do communal dinners, buy ingredients from the shared kitty and the cost is already covered. If one person cooks using their own money, they log the shared ingredients as a shared expense and get their share back. Keep personal specialty ingredients separate from what the house covers.

Skip the Spreadsheet

Groceries are the most chaotic share house expense to track. Split can log every shop, every random milk run, and every shared purchase so nobody's quietly keeping score. Just add it, split it, sorted.

Start splitting