ISO 17100 Certification: What It Means for Translation

ISO 17100 is a term that appears regularly in professional translation proposals, yet few clients fully understand what it requires. It is not a generic quality badge: it is an international standard that precisely defines the qualification requirements for translators, the mandatory review processes, and the quality control procedures that a translation service provider must follow in order to claim compliance.

What the ISO 17100 standard actually defines

ISO 17100 is the international standard for translation services, published by the International Organization for Standardization in 2015. It replaced the earlier European standard EN 15038 and establishes minimum mandatory requirements in three core areas:

• Human resource qualifications — translators must hold a relevant higher education degree in translation or an equivalent combination of training and documented experience. Revisers must have additional qualifications and cannot have worked on the translation they are reviewing
• Production process — every ISO 17100-compliant translation must pass through two distinct and obligatory phases: translation by a qualified translator and independent revision by a second qualified professional
• Project management — certified providers must maintain documented records for each project, including the identity of the professionals involved and the quality controls applied

The standard explicitly excludes machine translation outputs and any process where qualified human revision is absent. Any workflow that does not include revision by a second independent professional cannot legitimately claim ISO 17100 compliance.

Who needs ISO 17100 certified translation

ISO 17100 certification is required or strongly recommended wherever document accuracy carries legal, regulatory, or financial consequences:

• Legal documentation — contracts, articles of association, powers of attorney, and court decisions intended for use in foreign jurisdictions
• Medical and pharmaceutical records — clinical documentation, package inserts, and instructions for regulated medical devices
• Immigration and citizenship processes — personal documents required by foreign public authorities
• International tenders — proposals and contracts for public procurement in overseas markets
• Regulated financial reports — documentation required by financial supervisory authorities or stock exchanges

In many of these contexts, the ISO 17100 requirement is explicitly stated in tender specifications or applicable legal frameworks. Submitting a translation without this level of certification can result in the document being rejected by receiving authorities.

How the certified translation process works

An ISO 17100-compliant workflow follows well-defined steps. After the initial document analysis — which covers the subject domain, the language pair, and any reference glossaries — the process unfolds as follows:

1. Translation by a translator with verified qualifications and documented expertise in the specific domain of the document
2. Revision by a second independent qualified professional — not a cursory read-through, but a systematic verification of accuracy, register, and terminological consistency
3. Final verification of the formatted document, confirming that layout has been preserved and no segment has been left untranslated
4. Delivery with documentation — certification implies full traceability: the provider must be able to identify the professionals involved and the steps followed for each project

This process takes longer and costs more than a standard translation, but it is the only one that guarantees compliance with rigorous normative requirements and produces documentation that can withstand audit scrutiny.

How Vertio helps

For businesses that need certified translation without the complexity of managing multiple providers, Vertio makes the ISO tier available directly on the platform:

• ISO tier with no prior negotiation — any DOCX, PPTX, or PDF document can be submitted for an ISO 17100-compliant translation process directly through the platform, without contacting agencies or waiting for custom quotes
• Certified human translators with documented expertise in the most demanding domains — legal, financial, technical, and pharmaceutical — oversee and revise every project following the two-stage process the standard requires
• Detailed quality report included with the ISO tier, providing full process traceability and a record of all verifications performed, suitable for presentation to authorities or auditors

For documents where translation quality has direct implications for legal or regulatory validity, Vertio's ISO tier provides a certified, documented process without the administrative overhead typically associated with traditional translation agencies.