This October 2025, at Welex’s Marbella office, we celebrate a milestone that speaks volumes about who we are as a firm: the 25-year career of Sara Duarte, our Head of Accounting in Marbella.
More than just an anniversary, it is a recognition of a career dedicated to providing security, clarity, and compliance to thousands of clients — especially to foreign residents who rely on Welex when settling, investing, or starting a business on the Costa del Sol.

A Career Built on Precision

Since joining Welex, Sara has led the accounting department with one clear premise: precision is non-negotiable.
Operating in an ever-evolving regulatory environment, she has consistently anticipated legislative developments, aligned cross-functional teams, and implemented standardised processes to ensure each closing, tax filing, and internal audit is executed with exeptional rigour.
Her approach combines technical excellence with strong pedagogical skills: turning complexity into clarity for the client.

Building Trust with International Clients

Welex assists clients from various countries — particularly from the Netherlands and Northern Europe — who wish to buy or sell property, establish companies, or regularise their tax situation in Spain.
Within this context, Sara’s role has been crucial in:

  • Translating Spanish regulations into clear, client-friendly documentation.
  • Aligning accounting, taxation, and financial planning to prevent medium- and long-term surprises.
  • Coordinating closely with our legal and labour departments, ensuring that accounting accurately reflects corporate operations and obligations with Social Security and the Spanish Tax Agency.
  • Facilitating document traceability for banks, notaries, and registries — essential in property transactions and inheritance processes.

Thanks to this comprehensive vision, many clients have not only fulfilled their obligations but have also optimised their corporate and asset structures with prudence and foresight.

A Culture of Quality and Service

Sara’s 25 years at Welex have been instrumental in consolidating a quality-driven culture based on three key pillars:

  • Methodology and internal control. Clear procedures, compliance checklists, and review systems to minimise risks.
  • Continuous training. Regular internal updates to ensure the team remains aligned with current regulations and best practices.
  • Proactive attention. Anticipating fiscal milestones, issuing reminders, and scheduling accounting activities to prevent last-minute stress.

This model, now part of Welex’s DNA, translates into peace of mind for clients: they know what to do, when to do it, and why it matters.

Calm Leadership in Critical Moments

In accounting, critical moments — annual closings, inspections, audits, due diligence or mergers and acquisitions — require composure and sound judgment.
Sara’s leadership is defined by serenity and precision: she prioritises effectively, delegates efficiently, supervises thoroughly, and maintains transparent communication with both the team and clients.
Her management style fosters shared responsibility and continuous improvement.

Innovation and Efficiency

Throughout these years, Sara has championed the implementation of tools that enhance operational efficiency: invoice digitalisation, intelligent reconciliations, validation workflows, and clear management reporting for informed decision-making.
For Welex, technology is a means, not an end — it must always be combined with professional oversight to ensure data accuracy and legal compliance.

What We Truly Celebrate

Beyond numbers, we celebrate the trust Sara inspires in clients and colleagues alike.
We celebrate her professional ethics, commitment to excellence, and ability to build long-term relationships founded on respect and transparency.
In such a dynamic and multicultural market as the Costa del Sol, these values make all the difference.

Thank You, Sara

On behalf of the entire Welex team, thank you for 25 years of rigour, leadership, and dedication.
Your work has been — and continues to be — fundamental to fulfilling our promise: to accompany those who choose Spain to live, invest, or start a business with legal and accounting security.

 

Do You Need Accounting or Tax Advice in Spain?

If you are a foreign resident on the Costa del Sol — or planning to become one — and are seeking reliable accounting, smooth tax compliance, and integrated legal coordination, our team is here to help.
Contact Welex, Lawyers & Accountants, and let us help you make informed decisions with clarity, structure, and more than 20 years of experience in Marbella.