Turning 40 is one of life’s biggest milestones, you’re wiser, more confident, and ready to celebrate everything you’ve achieved. Whether you’re planning something grand or intimate, your party should reflect your personality and leave your guests with memories they’ll talk about for years.

If you’re searching for ideas for 40th birthday party celebrations, this guide covers 40th birthday party ideas for every style - from glamorous nights out to relaxed Aussie backyard gatherings. We’ll explore entertainment, venues, and creative touches to make your big day unforgettable.

House party ideas for a 40th birthday party

Parties at home can be epic - comfy, personal and familiar. Whether it’s a cozy dinner or a big backyard bash, there’s a style for everyone. Check out some of our top picks for a memorable time!

1. Dinner party

A sophisticated, candlelit soirée filled with delicious food, laughter, and elegant charm. Hire a caterer, bartender or waiting staff for a stress-free and fine-dining experience.

Make it special with personalised menus, matching wine pairings, and a stunning tablescape with flowers and gold cutlery - a timeless pick among classy ideas for a 40th birthday party.

2. Big bash

A dazzling, high-energy celebration packed with music, dancing and unforgettable memories.

Who to hire to make it epic?

1. Hire a marquee and decorate it with your birthday theme to make it more special! (check out our guide for how to decorate your marquee!) 
2. Bring in a DJ and/or live band to set the vibe
3. Hire a caterer to serve up delicious food that wows your guests 
4. Have bartenders serve drinks all night long 
5. You could even add entertainers, magicians, comedians, performers - make your 40th birthday celebration one for the books!

Make it special with professional lighting, confetti cannons, personalised signs, and a photo booth - one of the most energetic 40th birthday party ideas ever!

3. Cocktail party

A chic evening of mixology, glamour and sparkling conversation. Hire a professional mixologist to craft signature drinks for your evening, and a caterer to serve up canapes all night long.

Make it special with a custom bar setup, elegant glassware, and a cocktail competition - a stylish highlight among birthday party ideas for 40th birthday.

4. Garden party

A breezy, sun-kissed gathering surrounded by blooms and good vibes. Hire a catering team for gourmet outdoor dining, and a live band for acoustic background music! 

Make it special with string lights, a games station (cornhole, giant jenga, or target games!) and floral centerpieces - effortlessly elegant and one of the most charming ideas for a 40th birthday party.

5. Wine tasting 

A refined, indulgent evening of sipping, swirling, and savoring. Hire a sommelier for a guided tasting or vineyard-inspired menu.

Make it special with wine flights (a tasting experience that lets you sample several different wines - usually three to six small pours - side by side), cheese boards and rustic décor. A sophisticated twist on a classic 40th birthday party.

6. High tea party

A delightful, dainty afternoon filled with charm, chatter and tiered treats. Hire a catering company to serve scones, petit fours and fine teas. Or add a solo guitarist in the background to add a soft tone to the afternoon! 

Make it special with vintage china, floral garlands and personalised menus (labelled with your guests’ names). 

7. Murder mystery 

A thrilling, interactive evening of suspense, secrets, and laughter.

Make it special, with costume dress-up, dramatic lighting, and themed décor — one of the most exciting ideas for a 40th birthday party.

8. Trivia night

A lively, laughter-filled competition testing wit and fun facts. Choosing your favourite trivia games! Hire a caterer to serve up charcuterie and grazing boards so people can snack as they compete! 

Make it special with personalised trivia rounds about your (and your guests’) life, buzzers, and prizes - a clever and memorable idea for your party. 

9. Talent show 

A hilarious, heartwarming night where everyone’s a star. Bring in a stage setup with microphones and lighting to put your friends and family fully on show! They might be too shy but some drinks will surely boost their confidence! 

Make it special with a red carpet entrance, judges’ panel, and trophies. An entertaining hit for fun birthday party ideas for 40th birthday.

10. Surprise party

A joyful explosion of excitement and heartfelt reactions. Hire an event planner to coordinate timing, décor, and guest arrivals - then all you need to worry about is getting the birthday person to the house on time!

Make it special with hidden cameras for the big reveal, live music, and a confetti moment. An unforgettable idea for a 40th birthday party.

11. Pizza Night 

A cozy, hands-on feast of cheesy goodness and laughter. Plus, a great excuse to buy a pizza oven! Hire a pizza chef to work the oven whilst you and your guests top your pizzas and make culinary masterpieces! Also, hire bar staff to serve up Italian-inspired drinks to give you a classic aperitif experience. 

Make it special with a toppings bar, Italian themed live band and personalised matching aprons. A relaxed yet delicious 40th birthday party idea.

12. Bonfire 

A warm, laid-back evening of stories, s’mores, and starry skies. Hire a musician for acoustic tunes or a catering team for BBQ bites.

Make it special, with: cozy blankets, fairy lights, and gourmet hot chocolate. One of the most heartwarming birthday party ideas for 40th birthday.

13. Sip & paint 

A colorful, creative night filled with laughter, art, and wine. You could become true artists with help from an art instructor or rent easels and supplies.

Make it special with personalised canvases, wine pairings and an art showcase. An inspiring and joyful idea.

14. Around the world 

A global culinary adventure without leaving your home. In fact you go all around your home - making each area a different part of the world! Hire chefs for different cuisines or themed food stations as you go around the world. Hire entertainers that specialise in the relevant culture. 

Make it special with country-themed décor, music, and passports for guests. A unique and cultural 40th birthday party idea.

15. House party

Going back to your youth! A fun, carefree night where home turns into the ultimate celebration zone. Hire a DJ, caterer or event decorator to turn your home into a classic 90s house party. Make it special with dance floor lighting, themed cocktails, and personalised décor. One of the most versatile ideas!

40th birthday party ideas at a venue

Hiring a venue to host your 40th birthday party celebration can be an easy way to make the whole process a lot less stressful! There are tons of ways to keep the intimacy and comfortability of hosting at home at a venue, check out our ideas below: 

16. Escape room challenge

A thrilling, laughter-filled adventure packed with teamwork, puzzles, and surprises around every corner.

Make it special with themed props, team t-shirts, trophies for winners, and a post-game drinks table. A high-energy and unique idea for a 40th birthday party that everyone will talk about for weeks.

17. Sports-inspired celebration

A fun, competitive day filled with laughter, teamwork, and friendly rivalry. Perfect for sporty spirits! Book a golf club, bowling green, or oval. Bring in a caterer or food truck for post-game feasting, or even hire an MC or entertainer to host games and challenges.

Make it special with branded “Team 40” shirts, medals for winners, games, and live background music. One of the most playful birthday party ideas for 40th birthday celebrations!

PS: If you’re in Brisbane, check out The Grove Rooftop (rooftop event space, ideal for city-sports hybrid)

18. Harbour cruise celebration

A luxurious, champagne-filled day or evening cruising across sparkling waters under the stars, looking over the sites of your city. 

Make it special with a sunset departure, seafood platters, string lighting, and a surprise fireworks display. A dazzling 40th birthday party idea that screams “celebration!”

19. Spa retreat celebration

A blissful, rejuvenating escape filled with pampering, prosecco and peaceful vibes. You could even hire a caterer for healthy canapés or a champagne brunch (to make it extra boujie). 

Make it special with custom robes, floral arrangements, aromatherapy candles, and a bubbly bar. A luxurious idea for a 40th birthday party that soothes the soul before the big night!

20. Destination birthday getaway

An unforgettable, adventure-filled escape celebrating the big 4-0 in style! Hire a travel planner to coordinate your dream getaway to Byron Bay, the Whitsundays, or a vineyard region. And once you’re there, book a private chef or local catering for an intimate dinner party.

Make it special, with: welcome gift bags, coordinated outfits, and a themed dinner night. The ultimate birthday party idea for 40th birthday that blends travel, relaxation and celebration.

21. Private rooftop party

A stylish, skyline-soaked celebration filled with cocktails, music and unforgettable views.

Make it special with skyline photo ops, neon signage, and a champagne tower. One of the most glamorous 40th birthday party ideas for city lovers!

PS: If you’re in Brisbane, check out Lina Rooftop (indoor/outdoor rooftop venue with skyline views). 

22. Club takeover

A high-energy, dance-filled night that’s all about fun, music, and letting loose. Rent out a club or private function room with a DJ booth.

Make it special with glitter stations, a themed dress code, and confetti blasts. A show-stopping idea for 40th birthday party that turns your milestone into a mini festival!

23. Winery celebration

A relaxed yet sophisticated celebration filled with wine, laughter and vineyard charm.

Make it special with wine flights, floral garlands, and a sunset dinner among the vines. One of the most scenic birthday party ideas for 40th birthday.

Here are some great vineyards across the country: 

• Melbourne: Vines of the Yarra Valley, Zonzo Estate (Yarra Glen), or Levantine Hill Estate
• Sydney: Urban Winery Sydney (Moore Park), Centennial Vineyards (Bowral, Southern Highlands), or Cupitt’s Estate (Ulladulla). 
• Brisbane: New Tricks Wine (Brisbane), Sirromet Wines (Mount Cotton), or Ocean View Estates (Dayboro)
• Perth: Sandalford Winery (Swan Valley), Mandoon Estate (Caversham), or Upper Reach Winery (Baskerville). 
• Adelaide: The Lane Vineyard (Adelaide Hills), Bird in Hand Winery (Woodside), or Penfolds Magill Estate (Magill). 

24. Live music or jazz club night

A soulful, smooth evening of music, dancing and candlelit charm. Consider hiring a photographer or videographer to capture the performances and your guests joy!

Make it special with themed cocktails, velvet drapery, and candlelit tables. A timeless 40th birthday party idea that oozes sophistication.

25. Garden pavilion party

A sun-soaked, flower-filled celebration with relaxed elegance and natural charm. Bring in a live acoustic duo for easy listening, and if the venue doesn’t have them to hire, bring in bartenders to serve fresh spritzers and cocktails.

Make it special with lawn games, string lights, and boho floral accents. One of the most effortlessly chic ideas for a 40th birthday party.

26. Art gallery or museum event

A creative, cultured evening that feels exclusive, elegant and unforgettable. Hire the gallery or museum space for a private evening function, and bring in caterers and waitstaff for cocktails and canapés. 

Make it special, with a personal art exhibit, and signature drinks — a refined birthday party idea for 40th birthday that blends culture and celebration.

PS: If you’re in Sydney check out The Royal Exchange of Sydney (versatile function space in Sydney CBD).

27. Cocktail masterclass party

A lively, interactive night of laughter, learning, and delicious drinks. If the venue doesn’t already have them, bring in caterers for snacks or a canapé spread, and book a DJ or playlist curator for a fun, upbeat vibe.

Make it special, with: custom drink menus, bar games, and cocktail competitions — a stylish, social 40th birthday party idea that gets everyone involved.

PS: If you’re in Melbourne, check out One of Nine (event destination in Melbourne’s Richmond, flexible event space). 

28. Progressive dinner

A fun and flavour-packed evening that keeps guests moving, mingling, and amazed. Move around your city, having a different course in each place!  Hire a chauffeur or even a limo to take guests between venues! And add a photographer to capture the transitions and settings.

Make it special with themed décor for each course, signature cocktails and a keepsake “passport” menu. A creative twist on ideas for a 40th birthday party that’s both elegant and interactive.

29. Private dining experience

An intimate, candlelit celebration full of delicious food and personal touches. Plus you could choose one of your favourite spots! Bring in a musician or playlist curator for background music.

Make it special with personalised menus, soft lighting and a toast to remember. A sophisticated birthday party idea for 40th birthday that’s all about indulgence and connection.

30. Bottomless brunch 

A vibrant, feel-good celebration overflowing with laughter, bubbles, and delicious bites - the perfect mix of relaxed and fabulous!

Make it special with signature mimosa bars, personalised menus, donut towers and luxe table settings. An effortlessly stylish idea.

City options to celebrate your 40th birthday!

• Melbourne: Try The Smith in Prahran or Harlow in Richmond for lively bottomless brunches.
• Sydney: SoCal Neutral Bay or The Winery Surry Hills offer fab garden-style brunch settings.
• Brisbane: Lina Rooftop and Darling & Co in Paddington are brunch favourites with skyline flair.

Outside 40th birthday party ideas

If you don’t want to hire a space and save a bit on budget by not having a venue, consider hosting your 40th birthday celebration outside at a free venue! Here are some ideas…

31. Beachside party

A sun-soaked, carefree celebration filled with salty air, good music and seaside bliss.

Make it special with picnic blankets, a Bluetooth speaker, beach games and a BYO drink station. One of the most relaxed and joyful ideas for 40th birthday party that can be done right on your local beach for free.

32. Luxury picnic

A chic, boho-inspired afternoon of grazing platters, bubbles and laughter under open skies.

Who to hire to make it epic?

• Bring in a caterer for gourmet platters or brunch boxes.
• Hire an acoustic musician for background tunes.`

Make it special with handmade bunting, local flowers, a DIY mimosa bar and picnic games! Host it at your local park or garden. Borrow picnic rugs, and create a playlist for a perfect afternoon without any venue costs.

33. Coastal sunset celebration

A golden-hour gathering with ocean breezes, glowing skies, and relaxed sophistication.

Make it special with fairy lights, handmade candles and a sunset toast. A simple yet unforgettable idea for 40th birthday party by the coast.

34. Adventure day

An action-packed day of exploration, energy and laughter that ends with great food and storytelling.

Make it special, with: team challenges, printed maps, and a surprise reward for everyone. One of the most memorable 40th birthday party ideas for those who love a thrill.

Free option: Plan a self-guided adventure! Go hiking, swimming or kayaking at a local park or river. End with a homemade picnic dinner or campfire meal.

35. Pool party

A fun-filled, sun-drenched celebration full of colour, cocktails and laughter.

Make it special, with: floating pool decorations, lights, and mocktail stations. A lively birthday party idea for 40th birthday perfect for summer.

Places to host your pool party

• Sydney: Ivy Pool Club (Sydney CBD), The Old Clare Hotel (Chippendale), or The Rooftop Sydney (Barangaroo). 
• Melbourne: Adelphi Hotel Rooftop Pool (CBD), The Langham Melbourne (Southbank), or Crown Metropol Level 27 Pool
• Brisbane: Lina Rooftop (South Brisbane), The Calile Hotel (Fortitude Valley), or The Westin Brisbane – Nautilus Pool Deck

36. Go camping (or glamping)

A cozy, star-filled getaway with laughter, stories and toasted marshmallows.

Make it special, with: a s’mores bar, cozy blankets, and a stargazing setup. A wholesome idea for a 40th birthday party that feels peaceful and grounding.

Free option: Go camping in a national park. Borrow camping gear, cook on a BBQ or campfire, and enjoy the simple beauty of nature.

37. Horseback riding experience

A tranquil, nature-filled day exploring scenic trails and connecting with animals. On top of finding a local horse riding company, bring in a photographer to capture the scenery and the memories! 

Make it special with a picnic lunch, matching outfits, and a champagne toast afterward. A graceful, nature-inspired 40th birthday party. 

Some options in major cities: 

• Glenworth Valley Horse Riding (near Sydney, NSW)
• Eastside Riding Academy (Sydney, NSW)
• Woodlands Trail Riding (Melbourne, VIC)
• Gunnamatta Trail Rides (Melbourne region, VIC)
• Cherbon Waters Equestrian Centre (Brisbane, QLD)
• Slickers Horse Riding (Brisbane region, QLD)

38. Run a marathon (or mini one)

Why not run over 40k to celebrate turning 40?! A motivating, empowering, and health-focused way to celebrate your milestone. After your race there’s tons of reasons to celebrate, at a nearby park hire a caterer or food truck company to bring in delicious food! 

Make it special, with race bibs, medals, and a post-run picnic. A unique birthday party idea for 40th birthday that’s full of heart and energy.

39. Live concert celebration

If you’re a music lover, what’s better than going to a concert to celebrate your 40th birthday?! A vibrant, music-filled night full of energy, movement, and memories.

Make it special with glow sticks, and pre-drinks with themed cocktails! 

Free option: Find a free live concert or community music night in your area. Bring picnic blankets, snacks, and your favourite people for an easy, budget-friendly night.

40. Hiking celebration

A refreshing, scenic escape to breathe, explore and reconnect with nature. Bring in a caterer for a picnic lunch post-hike or even hire a yoga instructor for a scenic post-hike stretch session! 

Make it special with matching hats or shirts, trail snacks, and a picnic at the summit. A grounding and inspiring idea for 40th birthday party that celebrates adventure and mindfulness.

Some hiking options! 

• Sydney: Coastal walks like the Bondi to Coogee Coastal Walk offer stunning ocean views, beaches and moderate terrain
• Melbourne: Trails such as in the Dandenong Ranges or the closer Yarra Bend region offer a mix of forest, views and ease. 
• Brisbane: The Mount Coot‑tha Summit Track is a standout with great views and not too far from the city.