Audit & Assurance
WE OFFER A HIGH QUALITY SERVICE WHICH IS THE RESULT OF AN ONGOING PROCESS OF INNOVATION.
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Our Offer
Our specialisation in auditing, combined with the use of advanced technological tools, allows us to streamline processes and guarantee strict compliance with the applicable technical standards, maintaining high standards of independence, quality and rigour in the review of annual accounts. With the aim of offering service excellence, we guarantee quality through the careful selection of our human and technological resources, creating multidisciplinary teams that respond effectively to our clients’ needs. We manage risks preventively, both when carrying out work and when taking on new clients. Our commitment to continuous improvement is ensured by internal and external review processes, as well as the rigorous management of our independence policy. In addition, we promote ethical behaviour within our teams, especially when faced with complex decisions. Our auditing service not only lends credibility to the annual accounts, but also anticipates risks and identifies areas for improvement, contributing to the stability and future success of our clients’ businesses. We operate globally with an international network that ensures a common consistent strategy, creating close collaboration with clients in which our directors and partners are directly involved.
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Auditing ServicesOur approach helps the organisations we audit to manage their risks effectively and improve the quality of their financial and non-financial information.

At Auren, we guarantee excellent audits that maximise value for clients in the key aspects of their business.

Leaders in the Sector
Auditing Service Areas
Auren is a full member of the prestigious IFAC (International Federation of Auditors and Consultants) Forum of Firms, a group made up of just 25 companies worldwide, recognising our commitment to excellence and quality in the professional practice of auditing and consulting.
What services do we provide?
- Design and implementation of internal audit departments: We create and structure internal audit departments that meet the specific needs of your organisation.
- Monitoring processes and procedures: We monitor and evaluate processes and procedures to ensure compliance and operational efficiency.
- Outsourcing internal auditing functions: We provide outsourcing solutions for internal auditing, guaranteeing quality, transparency and efficiency in risk management.
- Risk assessment and internal control reports: We draw up detailed reports on the risks identified and the effectiveness of internal controls, helping to strengthen corporate governance.
These services aim to ensure that your organisation operates with the highest standards of integrity and compliance, in line with global best practices.
Auren has extensive experience in working collaboratively with Local Public Authorities, including municipal companies, municipal assemblies, public-private entities, listed companies, non-profit bodies of a public nature and consortia. This experience comprises both the work carried out in the public sector and our track record in the private sector.
What services do we provide to the public sector?
- Financial audits: We analyse public finances to ensure compliance and efficiency.
- Legal compliance audits: We check compliance with applicable rules and regulations.
- Operational and management audit: We assess the management of public resources and the operation of organisations.
- Audits of public-private organisations: We support the review of the performance of public-private partnerships.
- Auditing foundations and public bodies: We audit organisations of a public nature.
- Control of public subsidies and grants: We check the management of public resources transferred to other organisations.
- Financial control and management of concessions: We monitor the efficient use of resources in public concessions.
- Risk assessment: We focus on governance, internal control and information systems.
Auren’s audit teams complement the functions of the public service, collaborating in the management and control of public funds, offering the experience and comprehensive vision of a multidisciplinary company.
Other Auren services for the public sector:
- Legal, tax and labour advice
- Financial consultancy
- Analysis and evaluation of service costs
- Advice on transparency and good governance programmes
- Training and education
- Asset inventories
- Accounting advice
- Feasibility, budgetary stability and financial sustainability plans
We also provide all the auditing services necessary to ensure compliance with all information, control and public management transparency requirements.
Auren provides multidisciplinary teams of highly specialised auditors and consultants with certified training and extensive experience in preparing and analysing reports before the competent courts, offering reliable solutions in legal proceedings.
What services do we provide?
The services we offer include:
- Judicial expertise
- Expertise in arbitration and mediation proceedings
- Financial opinions
- Dispute resolution
- Fraud prevention and investigation
- Counter-expertise reports
- Independent expert reports
Whenever the scope of the report so requires, we complement the analysis with a forensic computer investigation, co-ordinated by our Information Technology Security area, guaranteeing an even more rigorous and specialised approach.
At Auren, we adopt a multidisciplinary approach that goes beyond statutory audits and auditing. We complement our services with the preparation of specific reports that offer decision support to management teams, helping them to make informed strategic decisions.
What services do we provide?
To meet the interests of our clients, we have developed a wide range of services, including:
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- Simplified reporting
- Mandatory reports required by legislation, such as capital reductions and increases, pre-emptive subscription rights, etc.
- Evaluation of internal control systems
- Review of sustainability reports
- Preparation of other reports and information required for business management
Auren’s professionals are specialists with in-depth knowledge of the business world and vast experience in auditing and consultancy. Our audit reports are key to ensuring that stakeholders (shareholders, financial institutions, customers, suppliers and regulators, among others) can rely on the transparency and completeness of your organisation’s accounts.
What services do we provide?
At Auren, we help our clients improve the quality of their financial information, identifying potential risks and offering strategic support to ensure the viability and continuity of their businesses. We work closely and effectively to provide solutions that meet the specific needs of each client. The main services we provide include:
- Mandatory annual audits
- Auditing of consolidated accounts
- Sectors with specific regulations, such as finance, insurance and concessions
- Voluntary audits
Auren has extensive experience in due diligence processes, having worked with leading Portuguese companies in various business sectors.
When do we recommend carrying out a Due Diligence?
- Mergers, demergers and acquisitions
- Disposal of companies (vendor’s due diligence)
- Closure or expansion of business areas
- Going public
- Joint ventures and strategic alliances
- Privatisation
- Acquisition and management of franchises
- Obtaining sources of finance
- Investment in venture capital
- Changing management bodies
What are due diligences for?
Due diligences offer detailed knowledge of the reality of different areas of the entity involved in the transaction process and are a fundamental tool for negotiations. They help with decision-making by providing crucial information for moving forward with or withdrawing from the transaction, and they make it possible to demand specific responsibilities and guarantees relating to particular situations. In addition, they serve as a basis for determining the value of the transaction and adjusting the final price, while also identifying possible synergies.
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