A brand can hold a GOTS scope certificate and still fail a children's wear chemical test. Another can pass OEKO-TEX Standard 100 on a polyester jacket and carry no organic fibre at all. Both logos sit side by side on the capability deck of the same supplier, which is why buyers treat them as interchangeable proof of sustainability. They are not proof of the same thing.
The GOTS vs OEKO-TEX question is not about which certificate is stronger. One certifies a fibre chain from farm to finished textile. The other tests a finished article for harmful substances at the point of sale. A programme selling organic cotton tees to a European retailer usually needs both, held by different parties in the same chain. A programme selling polyester workwear needs one of them and has no use for the other.
What follows is the factory-end comparison: what each standard checks, what it deliberately leaves out, what each costs to hold, and how to decide per order rather than per brand. For a manufacturer running these programmes in Bangladesh, TEXVENTURE works under both, and the certificate that matters is the one that answers the buyer's actual questionnaire.
Two Certificates Answer Two Different Questions
GOTS, the Global Organic Textile Standard, is a processing standard for textiles made from certified organic natural fibres. It sets requirements across the whole chain after harvest: ginning, spinning, knitting, dyeing, cutting, sewing, packing, labelling and trading. A scope certificate says a facility's processes and organic input handling comply. A transaction certificate says a specific shipment is covered by that scope and by the organic fibre volume behind it.
OEKO-TEX Standard 100 is a product test. A laboratory takes the article — fabric, thread, zip, print, label, lining — and tests it against limit values for harmful substances. The certificate belongs to that tested article and to the applicant who submitted it, for one year. It says nothing about how the fibre was grown, how the wastewater was treated or how the workers were paid.
That single distinction resolves most confusion. GOTS is a process and provenance claim with chemical rules attached. Standard 100 is a chemical safety claim on the finished item. Comparing them is comparing a chain audit with a lab report.
Scope Compared: Fibre Chain versus Finished Article
| Dimension | GOTS | OEKO-TEX Standard 100 |
|---|---|---|
| What is certified | Processing chain and organic fibre content | Finished article and its components |
| Unit of certification | Facility scope certificate plus per shipment transaction certificate | Article, material or component module |
| Fibre requirement | At least 70% certified organic natural fibre | None, applies to any fibre including polyester |
| Chemical requirement | Approved input list and MRSL for processing chemicals | Limit values for harmful substances in the article |
| Social requirement | Yes, based on ILO core conventions | No |
| Wastewater requirement | Yes, treatment and sludge disposal rules | No |
| Traceability | Farm to finished product, volume reconciled | Batch and article identification at the lab |
| Validity | Annual inspection and renewal | One year, renewable |
| Who normally holds it | Spinner, knitter, dyer, garment maker, trader | Mill, garment maker, brand or importer |
| Typical driver | Organic claim on the label | Retail restricted substance policy |
What OEKO-TEX Standard 100 Tests, and What It Does Not
Standard 100 works from a limit-value list rather than a process audit. Testing covers residues such as azo dyes and other banned colourants, formaldehyde, heavy metals, chlorinated phenols, phthalates, pesticide residues, alkylphenol ethoxylates and, in current editions, PFAS. The laboratory tests what is present in the article at the levels a wearer could be exposed to, including saliva and perspiration simulation for baby articles.
Strictness scales with product class, which is the part buyers most often get wrong when they compare quotes:
| Product class | Applies to | Practical effect |
|---|---|---|
| Class I | Articles for babies and toddlers up to three years | Strictest limits, saliva and sweat fastness tested |
| Class II | Articles worn close to the skin over a large area | Tight limits on skin contact parameters |
| Class III | Outerwear and articles with little skin contact | Looser limits, restricted substances still covered |
| Class IV | Furnishing and decoration materials | Least strict of the four |
Two limits are worth stating plainly. The certificate covers the article as submitted. Change the print paste, the interlining or the drawcord supplier and the test result may not describe what you ship, because a certificate is not a specification that transfers automatically to a different bill of materials. And it does not reach backwards: a mill holding Standard 100 on greige and dyed cotton says nothing about organic content, dyehouse effluent or conditions on the sewing floor.
For children's wear the class matters commercially as much as technically. A Class II test on a kids' tee is not a substitute for Class I, and a supplier quoting "OEKO-TEX certified" without naming the class and certificate number has given you nothing you can put in front of a retailer's compliance team.
What GOTS Adds Beyond Chemical Safety
GOTS takes the organic claim and makes it auditable. The fibre must be certified organic under a recognised standard, and volume is tracked so a spinner cannot sell more GOTS yarn than organic cotton entering the chain supports. That reconciliation is why transaction certificates exist, and why brand owners should request them per shipment rather than accept a scope certificate PDF.
On top of fibre, GOTS sets criteria for processing chemicals through an approved input list, requires wastewater treatment with sludge disposal rules for wet processing units, bans certain finishes and accessories, and applies social criteria drawn from ILO core conventions covering child labour, forced labour, freedom of association, working hours, pay and safety. An annual on-site inspection by an accredited certification body covers the environmental and social side together.
Labelling is tiered, and this is where marketing language drifts from what was certified. Products with at least 95% certified organic fibre can carry the "organic" grade; products with at least 70% can carry "made with organic". Both are legitimate GOTS claims, but they mean different fibre content, and a 70% claim presented as fully organic is a misrepresentation the certificate does not support.
GOTS also covers only natural fibres from organic agriculture, such as cotton, wool, silk, linen and hemp. It has no version for recycled polyester or virgin synthetics. If your range is performance wear, the standard is not applicable and OEKO-TEX or a recycled-content certification is the relevant instrument.
Cost, Audits and Renewal Cycles
Buyers ask which is cheaper, and the honest answer is that they are different kinds of expense. GOTS is an annual facility cost with a per-shipment cost attached. Standard 100 is a per-article cost with an annual renewal.
| Cost element | GOTS | OEKO-TEX Standard 100 |
|---|---|---|
| Fee basis | Scope certificate scaled by turnover and audit days | Module fee per article or material group, plus testing |
| Typical order of magnitude | Low thousands of USD per year for a small to mid facility | A few hundred to around a thousand USD per module per year |
| Transaction costs | Transaction certificate per shipment | None per shipment |
| Audit requirement | Annual on-site inspection | Testing at an accredited institute, no site audit |
| Internal workload | Input records, volume reconciliation, chemical inventory, social records | Bill of materials, sample submission, certificate register |
| Time to first certificate | Typically four to eight weeks if documentation is clean | Typically two to four weeks depending on lab load |
| Failure risk | Volume reconciliation and chemical inventory gaps | A component left out of the submission |
Those are planning ranges taken from published fee structures and typical programme experience, not a quotation. Both standards are priced by local certification bodies and institutes rather than centrally, so the number moves with the certifier's country office and the facility's size. What matters for budgeting is that GOTS costs more in staff time than in fees, because volume reconciliation needs records most factories keep informally, while Standard 100 costs more in repeat submissions than in the first test, because every new article, colourway and component needs coverage.
Both are annual. A certificate that expired four months ago is not evidence of anything, and buyers who check the certificate number against the issuing body's public database catch that quickly.
Claims That Do Not Survive a Buyer's Review
None of these are dishonest in every case; they are imprecise. The problem is that an imprecise claim in a supplier deck becomes a compliance failure when the retailer's laboratory tests the shipment.
A Five Step Decision Process
Run that sequence at style level rather than brand level. A range with an organic cotton tee, a recycled polyester short and a printed kids' set can carry three different certification answers inside one purchase order.
Applying Both on One Production Run
In practice the two standards work as a stack rather than a choice. An organic tee carries GOTS from fibre through garment, and the same garment can also hold Standard 100 to satisfy a retailer's chemical policy — the claims reinforce each other and neither substitutes for the other in a compliance review. Carrying that stack through production is a documentation job: transaction certificates matched to shipment volumes, article certificates matched to the exact bill of materials, and both checked at final inspection rather than at shipping.
That is the same discipline described in our garment factory audit checklist, applied to certificates instead of sewing floors. Our certifications page lists the standards we work under across ISO 9001, BSCI, OEKO-TEX, SGS, Sedex and GOTS, and our ESG and transparency material explains how those commitments are reported. For programmes built on circular knit fabric, the fibre question and the chemical question usually arrive from the same buyer in the same email.
If you are planning an order and are unsure which certificate your buyer will accept, send the style, target quantity and the buyer's compliance requirement for a quote and the answer comes back at chain level: which holder needs which certificate, and what to request before sampling.
Frequently Asked Questions
Is GOTS better than OEKO-TEX?
Neither is better; they answer different questions. GOTS proves organic fibre content and chain-of-custody processing conditions. OEKO-TEX Standard 100 proves a finished article meets limit values for harmful substances. A brand making an organic claim needs GOTS, and a brand satisfying a retailer's chemical policy needs Standard 100.
Do I need GOTS certification to sell organic cotton clothing?
You need it if you intend to make an organic claim a buyer or regulator will test. Without a GOTS scope certificate somewhere in the chain and transaction certificates covering the goods, the organic claim rests on supplier statements alone, which most European retailers will not accept for a labelled organic product.
What is the difference between GOTS and OEKO-TEX in one sentence?
GOTS certifies how organic fibre is processed from farm to finished textile, while OEKO-TEX Standard 100 tests the finished article for harmful substances.
Can a garment be both GOTS and OEKO-TEX certified?
Yes, and many are. GOTS covers the organic fibre chain and processing inputs, while Standard 100 covers the finished article's chemical profile including prints, trims and accessories. The certificates are held by different parties and renewed separately, so both need checking.
Does OEKO-TEX Standard 100 cover the whole garment or just the fabric?
It covers the article as submitted, which may be a fabric or a finished garment including components. Coverage is only as complete as the bill of materials submitted, so a new print paste, zip or interlining usually requires a fresh test or an extension.