How do you say "I don't need a bag" in Japanese?

Quick use

Use ふくろはいりません (fukuro wa irimasen) while shopping when the cashier asks if you need a bag and you do not need one.

Chunk or pattern

• Reusable pattern: 〜 は / いりません
• In this scene, the useful chunk is ふくろはいりません.
• The opposite phrase is ふくろはいります.

Core words

• ふくろ: bag.
• いりません: do not need.

Helper words and endings

• は: marks the topic, like “as for a bag.”

Form contrast

• いります (irimasu) = I need it
• いりません (irimasen) = I do not need it

Practical note

This is a common checkout phrase in Japan because bags often cost extra. A short answer is more natural than over-explaining.