What do people get wrong about the plastic-bag charge and Japan's "my bag" habit?

This answer is a draft. It stays unpublished until legal review and source verification are complete.

The answerThe common misunderstanding is that the charge is a tax or is optional for shops. It is a mandatory national rule — shops must charge, at a price they set (usually ¥3–5), with exemptions only for bags that are at least 25% bio-based plastic, marine-biodegradable, or thick enough to be reusable. Convenience-store bag refusal went from about 25% before the charge to 75% after, and Japan's carrier-bag consumption is estimated to have halved. Carry a folding bag, and for food learn the "my bag" etiquette: say no to the bag before the cashier packs, pack cold and hot separately, and never put raw meat unwrapped into a bag you will reuse.

Since 1 July 2020 every shop in Japan must charge for plastic carrier bags, and the phrase "my bag" (a reusable shopping bag) entered daily life along with a new checkout question: "Do you need a bag?" Foreign visitors are surprised at both the small charge and the elaborate folding bags people carry; residents argue about whether it changed anything. The data is clearer than the argument.

The rule and its effect

Item	Detail
Law	Amendment to the Containers and Packaging Recycling Act ordinance; mandatory from 1 July 2020 for all retailers, including convenience stores, kiosks and takeaways
Price	Set by the shop, minimum ¥1; typical ¥3 (small) to ¥5 (large); supermarkets ¥3–5, department stores often ¥10–20 for paper
Exempt bags	≥ 25% biomass plastic (many convenience stores switched and still charge), marine-biodegradable plastic, thick reusable bags (≥ 50 μm); paper bags and bags for wet items (fish, meat) are not covered
Effect	Convenience-store bag-refusal rate ~25% → ~75% (industry data); national plastic carrier-bag use estimated down by about half; carrier bags were only ~2% of Japan's plastic waste by weight, so the measure is more about habit than tonnage
Compliance	Retailers report charges; no fines on consumers

The "my bag" etiquette

Say it early: "Fukuro wa irimasen" (no bag) or shake your head when asked "Fukuro go-riyō desu ka?" — before the cashier scans, because bags are added at the register.
Packing: at supermarkets you pack yourself at the sakkodai (packing counter) after paying; cold things together, eggs and bread on top, meat and fish in the free small clear bags from the roll by the counter so juices don't contaminate the bag.
Wash the bag: Japanese consumer research found bacteria in reused bags, especially where raw meat had leaked; fabric bags weekly, nylon bags wiped; keep a separate bag for meat/fish.
Convenience-store honesty: with no bag, put items in your bag only after paying — shop staff are alert to bags being filled before the till; keep the receipt visible.
The folding bag culture: Shupatto-style one-pull folding bags, furoshiki (see that article), brand eco-bags from department stores — a market of hundreds of millions of yen; a bag that folds to pocket size is the reason compliance is high.
Reusable bags and the environment: a cotton tote must be reused 50–150 times to beat a plastic bag on climate impact (UK and Danish life-cycle studies) — use the one you have, don't collect them.
Other packaging: the charge did not touch individual wrapping (the famous single-wrapped biscuits); from April 2022 the Plastic Resource Circulation Act asks shops to reduce spoons, straws, cutlery, hotel amenities — convenience stores now ask before adding a spoon.

[Verify] Bag-refusal percentages with the Japan Franchise Association figures; the 2% share of plastic waste and "halved" consumption estimates with MOE materials; life-cycle reuse counts with the cited UK/Danish studies.

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Sources

Ministry of the Environment — Plastic shopping bag charging system (from 1 July 2020): rules and exemptions

https://plastics-smart.env.go.jp/rejibukuro-challenge/

Ministry of Economy, Trade and Industry — Guidelines for plastic bag charging under the Containers and Packaging Recycling Act

https://www.meti.go.jp/policy/recycle/

Japan Franchise Association — Convenience-store bag refusal rate before and after the charge

https://www.jfa-fc.or.jp/

⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.

About this article

What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.

This is general information. Results vary from person to person and depend on your own conditions and surroundings.

Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.

Always follow the instructions on any product you use, and never mix cleaning products. If you rent your home, check with your landlord before making any changes.

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What do people get wrong about the plastic-bag charge and Japan's "my bag" habit?

The rule and its effect

The "my bag" etiquette

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About this article

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