Compostable packaging
Compostable vs Biodegradable Packaging: What the Difference Actually Means
Published 2026-01-10 · Updated 2026-09-18
Understand compostable vs biodegradable packaging, what certification proves, how disposal differs and how to make clearer packaging claims.
TL;DR
Biodegradable describes a process: microorganisms can break a material down under particular conditions. Compostable packaging is a more specific category designed to biodegrade within defined composting conditions and criteria. Neither word proves that packaging is suitable for every compost bin, accepted by every collection service or automatically the best choice. Check the evidence for the exact packaging, the conditions it covers and the disposal pathway available where it will be used.
For practical help choosing and planning custom compostable packaging, read the Custom Compostable Packaging Guide.
Key takeaways
- Compostable materials biodegrade under specified composting conditions, but packaging described as biodegradable is not necessarily certified compostable.
- A standalone biodegradable claim does not tell customers the required conditions, timeframe or disposal pathway.
- Home and industrial composting are different environments, and certification does not guarantee local collection or facility acceptance.
- Compostable is not automatically better for every packaging job; product protection, material use and the likely end-of-life pathway all matter.
- Specific, evidence-backed wording is more useful and defensible than broad environmental language.
What is the difference between compostable and biodegradable packaging?
Biodegradable describes what can happen: microorganisms can break a material down under particular environmental conditions. On its own, the word does not explain where that process happens, how long it takes or what remains afterwards.
Compostable is more specific. Compostable packaging is designed to biodegrade under defined composting conditions while meeting criteria for disintegration, biodegradation and the quality of the resulting compost. Those conditions may be provided by a managed industrial facility or, where the evidence specifically supports it, a home composting environment.
That makes a substantiated compostable claim more informative than a vague biodegradable claim. It still needs context: the claim should match the exact packaging, explain the relevant composting environment and give customers disposal instructions that make sense where the packaging is supplied.
The terms side by side
These words describe different material characteristics and end-of-life pathways. One does not automatically imply another.
| Term | What it tells you | What still needs checking |
|---|---|---|
| Certified compostable | The certified item has been assessed against the requirements of a stated standard or certification scheme for defined composting conditions. | The exact certification scope, home or industrial conditions, disposal instructions and local acceptance. |
| Biodegradable | The material can be broken down by microorganisms under some conditions. | The conditions, timeframe, evidence, residues and intended disposal pathway. |
| Bio-based | Some or all of the material is made from biological resources rather than solely fossil feedstocks. | The bio-based content and whether the finished packaging is compostable, recyclable or neither. |
| Oxo-degradable | Additives accelerate the fragmentation of conventional plastic when exposed to factors such as heat, light or oxygen. | It is not another name for compostable packaging. Products made from oxo-degradable plastic are prohibited from being placed on the EU market under the Single-Use Plastics Directive. |
| Recyclable | The packaging may be suitable for a specified recycling process. | The material, collection route and whether the relevant service accepts it locally. |
What compostable certification tells you
Certification provides independent evidence that the item within the certification scope has met defined requirements. Depending on the confirmed packaging and material, relevant standards and certification schemes can include AS 5810 and AS 4736 in Australia, and OK compost HOME or OK compost INDUSTRIAL internationally.
Certification is specific. Evidence for one resin, film construction or finished item should not be assumed to cover a different product. Check that the documentation relates to what you are actually buying and use only the marks and wording approved for that packaging.
Certification also does not promise collection everywhere. A certified industrially compostable item still needs access to a facility that accepts it, while a home compostable claim should be used only when the evidence supports home composting conditions. Local rules and services remain part of the disposal decision.
Why biodegradable needs more context
A biodegradable claim can be accurate, but the word alone leaves the most useful questions unanswered. Customers still need to know the environment in which breakdown is expected, the timescale, the evidence behind the claim and what they should do with the packaging after use.
Broad language can also create a stronger impression than the evidence supports. Australian and UK regulators tell businesses to make environmental claims clear, accurate and supported by evidence, and to explain important conditions or qualifications. The safest approach is not to make the claim sound bigger; it is to make it more precise.
If packaging is certified compostable, the specific compostable claim and its conditions will usually communicate more than the broader word biodegradable. If it is not certified compostable, do not let biodegradable imply that customers can place it in a compost bin.
Home and industrial composting are not interchangeable
Industrial composting uses controlled facility conditions. Home composting operates at smaller scale and generally at lower, more variable temperatures. Packaging suitable for one environment is not automatically suitable for the other.
Always follow the disposal wording for the confirmed packaging and check the service available to the end customer. An industrially compostable item should not be presented as home compostable, and neither claim means it belongs in conventional recycling. For a fuller comparison, read Home Compostable vs Industrial Compostable Packaging.
Is compostable packaging always the better choice?
No single material or disposal route is automatically best for every packaging job. The first responsibility of packaging is to protect the product. Packaging that fails, causes damage or uses more material than needed can undermine the benefit a material choice was meant to deliver.
A useful decision considers the complete job: the product being protected, material quantity, storage and transport conditions, likely customer behaviour, available collection or composting routes and the evidence needed for any public claim.
Compostable packaging can be a strong choice when it performs the job well and its intended end-of-life pathway is clearly explained. The claim should follow the confirmed specification and evidence—not lead the decision before those details are known.
A practical claims checklist for brands
Before approving packaging artwork, a product page or a campaign, check that a customer can understand both the claim and its limits.
- Identify the exact packaging and material covered by the evidence.
- Name the composting environment accurately: home, industrial or another specifically supported pathway.
- Use only approved certification marks and wording.
- Explain important conditions close to the claim rather than hiding them elsewhere.
- Give disposal instructions that reflect the packaging evidence and the region where it will be used.
- Avoid broad phrases such as eco-friendly, earth-friendly or guilt-free unless the specific impression they create can be substantiated.
- Review the complete impression created by the words, symbols, colours and images—not just each statement in isolation.
How Zero Pack approaches compostable packaging claims
All Zero Pack compostable packaging is certified compostable. The exact certification depends on the confirmed packaging and material, so we match certification and disposal wording to the final specification rather than applying the same named standard to every product.
Once the packaging is confirmed, we can provide the relevant certification evidence and help make sure the proposed artwork uses appropriate marks and disposal wording. If you are still choosing the right packaging, start with the Custom Compostable Packaging Guide or explore custom compostable packaging.
Sources and further reading
Australian Competition and Consumer Commission — Environmental and sustainability claims
UK Competition and Markets Authority — Green Claims Code
European Commission — Biobased, biodegradable and compostable plastics
EUR-Lex — EU policy framework on biobased, biodegradable and compostable plastics
EUR-Lex — Single-Use Plastics Directive
Planning custom packaging?
Explore the wider custom compostable packaging range, download the practical planning guide or tell us what your packaging needs to do.
Related guides
FAQ
Biodegradable means microorganisms can break a material down under particular conditions, but the word alone does not specify where, how quickly or what remains. Compostable packaging is designed to biodegrade within defined composting conditions and criteria. A compostable claim should still identify the relevant environment and be supported by evidence for the exact packaging.
No. Compostable is a more specific and potentially certifiable claim, but that does not make any package automatically better. The right choice depends on product protection, material use, the confirmed specification, available end-of-life pathways and whether customers receive clear disposal instructions.
Composting involves biodegradation, so certified compostable packaging is biodegradable under the conditions covered by its evidence. The specific compostable claim is usually more useful because it communicates defined conditions and criteria. Use wording that matches the certification scope rather than replacing it with a broad, unqualified biodegradable claim.
No. Home and industrial composting require different evidence, and collection services decide which items they accept. Follow the disposal instructions for the confirmed packaging and check the rules for the location where it will be used.
Ask which standard or certification scheme applies, whether it covers home or industrial composting, and whether the evidence relates to the exact material and finished packaging you are buying. Confirm approved certification marks and disposal wording as part of the artwork review.
Not necessarily. Biodegradable does not mean recyclable, and compostable packaging should not be placed in conventional recycling unless the relevant recycling service explicitly accepts it. Check the exact material and local collection guidance.
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