How much does a kids birthday party cost in Australia?
Australian parents spend around $270 on a typical children’s birthday party. The realistic range is $200 for a backyard party you run yourself to $1,200 or more for a fully managed one — and the gap between those two numbers is almost never the theme. It’s the venue, the entertainer, and party bags.
Prices in Australian dollars, checked August 2026.
What each part costs
Every line is a range because every line is genuinely a range — a jumping castle is $150 in an outer suburb on a Wednesday and $600 on a Saturday in December. The note says which end you’re at.
Cake
$25–$150A supermarket mud cake with a toy on top is $25–$35 and photographs fine. A decorated cake from a local baker starts around $80 and a custom one runs $120–$150. Baking it yourself costs about $15 in ingredients and an afternoon you may not have.
Food and drink for 20 children
$70–$180The low end is sandwiches, fruit, popcorn and cordial made at home. The high end is party pies, sausage rolls, cheese platters and juice boxes bought ready-made. Add $40–$60 if the parents are staying — which under about five, they will.
Decorations
$30–$120A balloon garland kit is $12–$20 and does more than everything else combined. Licensed character plates, cups and tablecloths are where this number becomes $120, and no child has ever mentioned a cup.
Party bags
$3–$10 eachSo $60–$200 for twenty. This is the line that quietly doubles a budget. Four decent things beats eleven pieces of plastic, and costs less.
Invitations
$0–$40Digital is free and gets you RSVPs you can count. Printed cards are $20–$40 and get you a group chat.
Entertainer — magician, face painter, character
$299–$499 for one hourTwo-hour packages generally run $399–$699. Rates rise on Saturdays and in December. Ask to see their Working with Children Check before paying a deposit; anyone doing this professionally will expect to be asked.
Jumping castle hire
$150–$600A basic castle is around $200 for a three-to-four-hour hire and about $250 for a full day. Larger and themed units run to $600. Supervision, if you want it, is another $30–$50 an hour — and check whether your council needs a permit for a park.
Venue or play centre package
$400–$700 for 15–20 childrenUsually includes the room, a host, food and sometimes the cake. A fully managed party can reach $1,200. Worth pricing against home honestly: it buys you the setup, the running and — the real one — the cleaning up.
Photographer
$200–$500Rare for a children's party and hard to justify unless it's a first birthday, where it's the most common line on this list.
Three budgets, worked out
The same twenty children, three ways. What changes between them is how much of the running you’re doing yourself.
At home, about $250
20 children, two hours, in the backyard or the lounge room
- Cake
- $30 — supermarket mud cake, decorated at home
- Food and drink
- $90 — made at home, one bought hot item
- Decorations
- $35 — balloon garland kit and streamers
- Party bags
- $70 — four good things each, not eleven
- Games
- $15 — prizes and one packet of something
- Invitations
- $0 — digital
Total $220–$280
This is a genuinely good party. The most common mistake at this budget isn't spending too little, it's spending it on themed merchandise instead of on food and one thing to do.
With an entertainer, about $700
20 children, two hours at home, with an hour of professional entertainment
- Entertainer
- $350 — one hour, face painting or a magician
- Cake
- $80 — from a local baker
- Food and drink
- $150 — mostly bought
- Decorations
- $60
- Party bags
- $100
- Extras
- $60 — hired tables, ice, a second adult's coffee
Total $650–$800
The entertainer is half the budget and worth it for one reason: it buys you an hour where somebody else is responsible for twenty children. If the choice is an entertainer or a venue, the entertainer at home is usually the better hour.
A venue package, about $900
18 children at a play centre, trampoline park or similar
- Venue package
- $600 — room, host, food, two hours
- Cake
- $80 — often not included, check
- Party bags
- $100
- Decorations
- $40 — most venues limit what you can put up
- Extras
- $80 — socks, spectator entry, over-numbers charges
Total $800–$1,200
You're buying setup, supervision and cleanup. The per-child charge above the package number is the line to read carefully — it's typically $25–$35 each and it's how a $600 package becomes $900.
Where the budget actually goes wrong
Party bags. Nobody budgets for them and they’re routinely 20–30% of the total. Twenty bags at $8 is $160, which is more than the cake and the decorations together.
Themed merchandise. Licensed plates, cups, tablecloths, napkins and banners carry a markup of two to three times the plain equivalent. Plain in the theme’s colours reads identically in every photograph.
Catering for a guest list rather than a head count. About one in ten who say yes don’t come. Buying for twenty-four when eighteen arrive is roughly $50 in the bin.
The venue’s per-child overage. Packages are quoted for 12 or 15 children and charge $25–$35 for each one above that. Two extra siblings is $70 you didn’t plan for.
Common questions
- What is the average cost of a kids birthday party in Australia?
- Australian parents spend around $270 on a typical children's birthday party. A DIY party at home starts near $200, an activity-centre package for 15–20 children generally runs $400–$700, and a fully managed party can reach $1,200 or more.
- How much does a kids party entertainer cost?
- A professional children's entertainer in Australia typically charges $299–$499 for a one-hour performance, and $399–$699 for two hours. Saturdays and December are dearer. Always ask to see their Working with Children Check before paying a deposit.
- How much does it cost to hire a jumping castle?
- Around $200 for a three-to-four-hour hire and about $250 for a full day, with larger or themed castles running to $600. Supervision is usually another $30–$50 an hour, and a public park may need a council permit.
- What's the cheapest way to do a kids birthday party?
- A park or backyard party with home-made food, digital invitations, a balloon garland kit and games that need nothing bought — a treasure hunt, pass the parcel, freeze dance. Around $120–$200 for twenty children. The savings come from skipping themed merchandise and party bags full of plastic, not from cutting the food.
- How much should I spend on party bags?
- $3–$5 a child is plenty, which is $60–$100 for twenty. Four things a child will keep beats eleven they'll lose by Sunday, and it costs less.
Set the number, and watch it
Tell us what you want to spend and you get the split across cake, food, decorations, entertainment and bags — then every purchase comes off it, so you find out you’re over before the party rather than after.
Plan your first party — free