Participating in a public tender in Spain can open up significant business opportunities for UK and international companies. However, submitting a successful bid involves more than meeting the technical and financial requirements of the contract. Companies must also ensure that their corporate, legal and financial documentation complies with the Spanish contracting authority’s requirements.
For businesses whose original documents are issued in English, sworn translation for public tenders in Spain may be an essential part of the tender preparation process. A professional sworn English to Spanish translation ensures that company documents can be submitted in Spanish when an official translation is required.
As a sworn Spanish translator specialising in legal and financial documentation, I regularly work with company documents, annual accounts, corporate records and other business documentation required for administrative and procurement procedures in Spain.
This guide explains which documents may require a sworn translation, when an official Spanish translation is necessary and how foreign companies can prepare their documentation for Spanish public procurement procedures.
Sworn translation for public tenders in Spain
1. Public procurement in Spain: why document translation matters
Public procurement in Spain (contratación pública) is primarily governed by Law 9/2017 of 8 November on Public Sector Contracts (Ley de Contratos del Sector Público).
Companies wishing to participate in Spanish public tenders must demonstrate that they meet the relevant legal, financial and technical requirements.
For foreign companies, this often means providing documents issued by the authorities, commercial registries, financial institutions or other organisations in their country of establishment.
Where these documents are in English, the contracting authority may require an official Spanish translation or, specifically, a sworn translation (traducción jurada).
The precise requirements depend on the tender documents (pliegos de contratación), the contracting authority and the nature of the supporting documentation.
It is therefore important to check the administrative specifications carefully before arranging any tender documents translation.
2. Which company documents may require sworn translation?
Foreign companies participating in Spanish public tenders may be asked to provide a range of corporate, legal and financial documents.
A sworn Spanish translation of company documents may be required to demonstrate a company’s legal existence, corporate structure, financial standing and technical capacity for public procurement in Spain.
Depending on the procurement procedure, the following documents may need an official English-Spanish translation.
Company incorporation and corporate documents
These documents establish the company’s legal existence, corporate structure and authority to conduct business.
Examples include:
- Certificate of Incorporation.
- Articles of Association or Memorandum of Association.
- Certificate of Good Standing.
- Company Register Extracts.
- Certificates of Registration.
- Shareholder and director information.
- Board resolutions.
- Powers of Attorney.
- Certificates of Incumbency.
For UK companies, documents issued by Companies House may be particularly relevant when demonstrating corporate registration and legal status.
Accurate translation of corporate documents requires an understanding of the legal terminology and company law concepts of the country in which the documents were issued.
Financial documents and annual accounts
Financial standing is one of the key aspects assessed in many public procurement procedures.
Depending on the tender requirements, companies may need to submit:
- Annual Accounts.
- Audited Financial Statements.
- Directors’ Reports.
- Balance Sheets.
- Profit and Loss Accounts.
- Cash Flow Statements.
- Annual Reports.
- Bank Certificates.
- Financial Solvency Certificates.
A sworn translation of annual accounts and financial statements requires particular attention to accounting terminology, financial concepts, figures and the structure of the original documents.
The accurate translation of financial information is essential when these documents are used to demonstrate a company’s economic and financial capacity.
Legal and administrative certificates
Other documents may be required to demonstrate that the company complies with applicable legal and administrative obligations.
These may include:
- Tax Compliance Certificates.
- Social Security Compliance Certificates.
- Certificates of No Criminal Convictions.
- Professional or Business Licences.
- Insurance Certificates.
- Declarations of Compliance.
- Certificates issued by regulatory authorities.
A sworn English-Spanish translation for Spanish authorities may be requested for certain documents, depending on the applicable requirements. Where a sworn translation is specifically required, the translation must be carried out by an appropriately appointed sworn translator.
Technical and professional documentation
Depending on the nature of the contract, contracting authorities may also request:
- Technical Certifications.
- Quality Management Certificates.
- Environmental Management Certificates.
- References and Certificates of Previous Experience.
- Contracts and Project Documentation.
- Professional Qualifications.
- Staff CVs and Professional Profiles.
Not all these documents necessarily require sworn translation. The relevant tender specifications should always be checked to establish whether an official translation is required or whether another form of translation is acceptable.
3. When is a sworn Spanish translation required?
A sworn translation (traducción jurada) is an official translation certified by a translator appointed by the Spanish Ministry of Foreign Affairs, European Union and Cooperation (MAEC).
Sworn translations have official status and may be submitted to Spanish administrative and judicial authorities.
In public procurement procedures, foreign companies are often required to provide official Spanish translations of documents supporting their eligibility, legal capacity and financial or technical standing.
The administrative specifications may expressly refer to an official translation, a sworn translation or a traducción oficial.
These requirements should not be treated as interchangeable without checking the wording of the tender documents and the applicable rules.
A standard translation or an automated translation should not be assumed to meet the requirements for official documentation.
If you need a sworn English to Spanish translation for a public tender, it is advisable to establish the exact requirements before commissioning the work.
4. Sworn translation of UK company documents for Spanish tenders
Following Brexit, UK companies participating in Spanish public procurement procedures may need to provide additional documentation to demonstrate their legal status and eligibility, depending on the applicable procurement rules.
This can involve documents issued by Companies House, HM Revenue & Customs, professional bodies, financial institutions and other UK authorities.
Some particularly common documents include:
- Certificate of Incorporation.
- Company Extracts.
- Confirmation Statements.
- Articles of Association.
- Annual Accounts.
- Certificate of Good Standing.
- Tax Certificates.
- Powers of Attorney.
Each document must be translated with due regard to the legal and institutional context in which it was issued.
For example, UK corporate concepts and terminology do not always have direct equivalents in Spanish company law. Translating these documents requires more than linguistic accuracy: it also requires an understanding of the relevant legal systems.
For UK businesses seeking to tender in Spain, using a specialist sworn Spanish translator with experience in corporate and financial documentation can help ensure that these documents are translated accurately and consistently.
5. Digital sworn translations: an efficient solution for tender submissions
Public procurement procedures are increasingly managed electronically. Companies generally submit their bids and supporting documentation through electronic procurement platforms.
Digital sworn translations can therefore be a particularly practical solution.
Under Order AUC/213/2025 of 26 February, sworn translators may certify their translations using a qualified electronic signature.
The resulting PDF includes the original document, the translation and the translator’s certification, together with the identification information required by the regulations.
This allows companies to receive and submit their sworn translations electronically, without necessarily having to wait for paper copies.
The electronic signature can be verified through the Spanish Government’s VALIDe platform:
This is particularly useful for international companies coordinating tender submissions from outside Spain. Find more on digitally-signed sworn translations here.
6. How to prepare your documents for sworn translation for public tenders in Spain
If your company is preparing to participate in a Spanish public tender, I recommend following these steps before requesting a quotation.
1. Check the tender specifications.
Review the administrative specifications (pliego de cláusulas administrativas particulares) and identify which documents must be submitted in Spanish and whether sworn translation is expressly required.
2. Prepare the original documents.
Send the documents in PDF format, ensuring that all pages, signatures, registration details and relevant information are clearly legible.
3. Identify any apostille or legalisation requirements.
Some foreign public documents may require an apostille or other form of authentication. This is a separate requirement from translation and should be checked with the contracting authority.
4. Send the documents for assessment and quotation.
Each document should be assessed individually, taking into account its length, format, terminology and any annexes.
5. Allow sufficient time for translation.
Tender submission deadlines can be strict. It is advisable to arrange translations well in advance rather than leaving them until the final stages of the bidding process.
7. Specialist sworn English-Spanish translation for public procurement
Translating documents for public tenders requires particular care. Corporate terminology, accounting concepts, legal expressions and administrative requirements must be accurately conveyed in Spanish.
I am a sworn Spanish translator appointed by the Spanish Ministry of Foreign Affairs, European Union and Cooperation (MAEC), with extensive experience in legal, corporate and financial translation.
My work includes the sworn translation of:
- Company incorporation and corporate documents.
- Annual accounts and financial statements.
- Company register extracts and certificates.
- Powers of Attorney and corporate resolutions.
- Contracts and commercial documentation.
- Legal and administrative certificates.
I also have a background in English law (Graduate Diploma in English Law) and company & partnership law (Level 6 Diploma), which is particularly relevant when translating UK corporate documentation for use before Spanish authorities.
I provide digitally signed sworn translations in PDF format, in accordance with the applicable Spanish regulations.
Request a quotation for your tender documents
If your company is preparing to participate in a public tender in Spain and needs a sworn English-Spanish translation of company documents, I can help you prepare the required documentation.
Whether you need a sworn translation of annual accounts, corporate certificates, company registration documents or other legal and financial records, I offer specialist English to Spanish sworn translation services for businesses and professional clients.
Please send me your PDF documents, together with any relevant information from the tender specifications, so that I can assess your requirements and provide a quotation.
Contact: info@vprspanishtranslations.com
USEFUL LINKS – Sworn translation for public tenders in Spain
- Spanish Public Sector Contracts Act (Law 9/2017) – Spanish legislation governing public procurement and tender procedures.
- Public Sector Procurement Platform (PLACSP) – Official portal for finding public tenders and accessing procurement documentation in Spain.
- European Single Procurement Document (ESPD) – European standard self-declaration used in public procurement procedures.
Sworn / Legal English-Spanish Translator with 20 years of experience in legal translation. BA in Translation & Interpreting and Graduate Diploma in English Law. Specialising in trusts, contracts, company documents and civil litigation documents. Traductora jurada y jurídica de inglés 20 años de experiencia en la traducción jurídica. Licenciada en Traducción e Interpretación y Graduada en Derecho inglés. Especializada en trusts, contratos, documentos societarios y escritos y documentos para procesos civiles y mercantiles.
