We help you start, grow & expand your business

We support companies and entrepreneurs at every stage of their business with tax planning, accounting, and consulting services. From Madrid to the world.

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WHAT WE DO

Our services

Our team of expert advisors with 20+ years of experience delivers the best solutions for every stage of your business, from creation to expansion:

Tax advice services

With a multidisciplinary approach, we help you plan & optimize your business tax strategy, adapting it to current and future financial scenarios.

  • Tax consulting & advice
  • International taxation
  • Tax audit support

Tax management and accounting services

We provide personalized solutions to manage your business’ financial transactions and activities, maximizing benefits and minimizing tax liabilities.

  • Bookkeeping 
  • Managing tax compliance
  • Financial reporting

Human resources consulting

We help you design an effective organizational structure, advise on managing your workforce, and ensure HR strategies align with your overall business goals.

  • Optimize hiring & payroll processes
  • Labor advisory services
  • Audit support

Business consulting

We provide advice and guidance to transform processes, navigate change, identify opportunities, and enhance business operations over the short and long term.

  • Supply chain management consulting 
  • Cost management consulting
  • Knowledge management consulting

Business purchase and sale consulting

Our expert advice and support help you minimize risks and maximize value for your business during the complex process of buying or selling companies.

  • Business valuation & support services
  • Deal structure & negotiation
  • Documentation & contracts

Business restructuring

We analyze, plan, and implement a business or department restructuring process to improve competitiveness, reposition your company, or address financial challenges.

  • Organizational restructuring
  • Financial restructuring
  • Operational restructuring

“Whether you have a financial department — and you need highly skilled services to expand globally — or you are a small business that needs accounting, HR, and tax support, we can design a unique solution for you!”

Nuria Gomez Bermejo
Founder & CFO, Sigma Corporate Solutions

Who We Are

Our story

Building a global business requires persistence, adaptability to navigate change, and having the right experts by your side.

At Sigma Corporate Solutions, our mission is to help entrepreneurs, SMEs, and large corporations grow profitable and sustainable businesses. How? By finding and implementing the right tax planning, financial, and accounting solutions for each stage of your company. We also help with the right approach to the business itself.

 

Sigma Corporate Solutions (formerly Tax Planning) was founded by Nuria Gómez in 2002, in Madrid. By that time, Nuria had extensive tax and accounting experience and was running a telecommunications company’s tax department. 

 

Rooted in choosing the clients she wanted to work with and having a more flexible schedule as a mother of two under-five kids, she decided to start her own business. The first two years were anything but easy.

 

Getting a business off the ground takes time — and as a one-person business, that means countless work hours. However, she gained valuable insights along the way. Throughout the years, that deep understanding of the business journey became a significant part of her skill set and eventually led to the expansion of Sigma Corporate Solutions’ service portfolio.  

 

After three years in business, Nuria had built a solid structure and was finally ready to bring additional talent on board. With her sister Mayte as Head of Finance, she found her perfect compliment: Mayte is an enthusiastic, detail-oriented doer, while Nuria brings a passion for creating business opportunities.  
In 2008, with her life and business partner Daniel Tapias, Nuria co-founded Sigma AI, a global training data collection, preparation, and annotation services company. Her financial advice and expertise in building a company from scratch were decisive in growing the company.
 
With an international approach as part of our DNA — Sigma Corporate Solutions works with clients in Spain, Europe, and the United States. Besides supporting businesses’ financial needs, we’ve been also providing consultancy services to clients seeking to expand globally or break into the Spanish market. 
“The main challenge for a businesswoman is to have the courage to continue, even in setbacks. When starting a business, we imagine scenarios and make a financial plan — and it’s important to do so. But our day-to-day often differs from the plan, so it’s key to be resilient and adapt to reality.” 

Nuria Gomez Bermejo
Founder & CFO, Sigma Corporate Solutions

WHY CHOOSE US

About the Sigma Group

Sigma Group is the umbrella of Sigma Corporate Solutions, Sigma AI, and Sigma Cognition. While each of these companies has its unique focus, they all have a shared purpose: enabling companies to scale and bring competitive, cutting-edge projects to life. Meet our sister brands:

Human-centric

Humans are at the heart of everything we do — from the professionals within our team to the people behind the companies we contribute to build and grow.

Our business goes beyond financial statements & tax returns: it’s about people.

Expert advisors

With 20+ years of experience in the tax, accounting, and consulting fields, we can tackle every business challenge.

Our international approach and knowledge of the business creation process are key to driving sustainable growth.

Business ethics

We are strongly committed to honesty, integrity, and transparency. 

Ethical business practices are reflected in our day-to-day internal processes and decision-making, and shared by the clients we choose to work with.

SIGMA CORPORATE SOLUTIONS

Our team

Nuria Gomez Bermejo

Founder & CFO

Mayte Gomez

Head of Finance

Elena Munoz Sanz

Human Resources Director

Javier Sanz de Galdeano

Financial Director

LEARN MORE ABOUT US

About the Sigma group

Sigma Group is the umbrella of Sigma Corporate Solutions, Sigma AI, and Sigma Cognition. While each of these companies has its unique focus, they all have a shared purpose: enabling companies to scale and bring competitive, cutting-edge projects to life. Meet our sister brands:

Sigma AI

Data annotation services for Generative AI & LLMs

Sigma AI is a global training data collection, preparation, & annotation services company focused on providing the highest quality training data at scale with a human touch.

Its strong team of annotators can solve even the most complex annotation challenges.

Sigma Cognition

Custom AI solutions with a data-centric approach

Sigma Cognition supports companies throughout the entire
process of designing, building, and implementing AI & ML solutions.

This involves evaluating new AI initiatives, building proofs-of-concept, and designing AI models.

Interested?

Get your business ideas off the ground and plan for sustainable growth with our financial, accounting, and consulting services.

Contact us to get started

Avenida de Manoteras, 6 
Edificio CETIL II – planta 4ª
28050 Madrid

  • info@sigmacorpsolutions.ai
  • +34 913 185 004