CostumeBox promo code - September 2026
Seasonal campaigns around Halloween, Book Week and Christmas drive the biggest savings at CostumeBox. In September 2026, 2 promo codes and offers are currently listed, while the clearance section and free shipping on qualifying A$ orders provide additional savings paths.
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20%
CURRENT
Promo code
CostumeBox promo codes • Expires in 8 days
20% Off Your Next CostumeBox Order with Discount Code
Apply the promo code at checkout to take 20% off your next CostumeBox order. Great for fancy dress, accessories and party supplies
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CURRENT
Promo code
CostumeBox promo codes • Expires in 8 days
Earn Rewards on Every Purchase
Join the CostumeBox rewards program and earn points on your orders to redeem for savings on future costume purchases
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KYOU
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Offer
CostumeBox Deals
Get 110% Store Credit Instead of a Refund at CostumeBox
Choose store credit over a refund and receive 110% of your purchase value back. A smart way to maximise value when returning unwanted costumes
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75%
Offer
CostumeBox Deals
Up to 75% Off Fancy Dress and Party Supplies
Save up to 75% on selected costumes, party supplies and fancy dress at CostumeBox. Limited stock available - shop early for the best deals
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85%
Offer
CostumeBox Deals
Up to 85% Off Clearance Costumes and Accessories
Shop the CostumeBox clearance sale for up to 85% off selected costumes and accessories. Over 200 styles marked down - grab a bargain today
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10%
Offer
CostumeBox Deals
10% Off Your First CostumeBox Order with Sign-Up Bonus
Subscribe to the CostumeBox newsletter and receive 10% off your first order. New customers only - sign up before checkout to claim
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Offer
CostumeBox Deals
Shop Preloved Costumes for Less
Browse the CostumeBox Preloved section for discounted costumes and accessories. Quality items at reduced prices
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Offer
CostumeBox Deals
Free Australian Returns on All Orders
Shop with confidence at CostumeBox and enjoy free returns Australia-wide on your costume and party supply orders
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