Home | About

Trusted International Accounting Company with Strong Local Expertise

At Leinonen, we like to keep things simple. Our purpose is straightforward: our job is to make your job easier.

With more than 36 years of experience as an international accounting company, we have developed a deep understanding of cross-border business operations. Our expertise in international trade, accounting, and compliance enables us to provide reliable outsourcing solutions for companies expanding across Europe and beyond.

Get in Touch

I'm Seppo Hämäläinen

Leinonen Group CEO

I have been CEO of Leinonen Group since 2016 and it is my pleasure to lead a company with such a dedicated team. Leinonen Group has been showing stable growth since the founding date 36 years ago, now we are offering our services in 11 countries, serve 1200+ clients and employ over 270 employees. In this message I would like to point out the four cornerstones that enable our success: great employee experience, superior client experience, solid production and long run focus.

We are here to stay. That´s why we are building lasting solutions and thinking always not only the next step, but also what will follow after that; we constantly invest to improve our everyday performance; we pay special attention on finding the right people to work with us; we strive to ensure that our clients receive all the help and advice needed. Our aim is for our client to acknowledge that working with Leinonen is easy and profitable.

About Our International Accounting Company

A service is only as strong as the people who deliver it. At Leinonen, our professionals are among the most skilled and dedicated experts in the field of international accounting, payroll, tax and legal services.

Our team members are:

- Detail-oriented and focused on accuracy
- Proactive in finding solutions before challenges arise
- Committed to helping clients succeed in every market they enter

Whether you’re opening a branch in Baltics, a subsidiary in Bulgaria, or a representative office in Norway, you’ll find a friendly and experienced Leinonen team ready to simplify complex business processes and ensure full compliance with local regulations.

We handle cross-border and local accounting, tax compliance, GDPR, and corporate administration, ensuring that your business operates smoothly and meets both local and international standards.

Accounting Offices

Years
in business

1500+

Satisfied
customers

Countries
we operate in

Our Values

High Ethics

We obey the law and all concluded contracts in every stage of our work. We handle delicate information responsibly and with care and we follow the same rules throughout our business area. We require individuals and organizations that we co-operate with to follow the same principles. High ethics is the key to reliability, which grows into trust. And trust – that is our most valuable asset.

Focus on clients

We base our activities on client needs. Succeeding on client service is our most important work task. We listen to understand, we conversate to find best solutions and we act proactively. We work together as a united group to keep our promises made to our clients.
And that our clients can keep their promises to their clients. We offer our clients advanced and reliable solutions, that increase their efficiency and profitability, without compromising sustainability.

Right people together

We pay special attention on finding the right people to work with us. Not only, that it makes us a great place to work, it makes us a skillful partner for our clients. With right people we mean more than professional abilities – most important is, that we share the same values. We take care of our skills by training, sharing knowledge and helping each other. We support open and honest communication at the offices and with clients. By this, we provide a stable and comfortable working environment, where we can rely on teammates, feel safe and appreciated. With right people we mean more than professional abilities – most important is, that we share the same values.

Continuous improvement

Good enough is not enough. Even if we do get good feedback from our clients, we will continue to improve our ways of working and develop processes in co-operations with clients. We aim to offer our clients advanced and reliable solutions and on the same time these solutions need to be efficient and profitable also for us. All this we need to archive without compromising sustainability. Continuous Improvement will be applied to all aspects of work activity , from daily tasks to end-to-end processes – covering the whole organization.

How We Work

“You can relax knowing that the work we perform on your behalf follows the highest standards and is fully compliant with local laws and regulations.”

Seppo Hämäläinen, Leinonen Group CEO

“We are in this for the long-term. We never do anything that could potentially reflect badly on our clients or in any way undermine their best interests.”

Seppo Hämäläinen, Leinonen Group CEO

“Rules and regulations change. Technology changes. Economic circumstances change too. Every member of our team is constantly upgrading their skill set so that, as a company, are always prepared to deal with change.”

Seppo Hämäläinen, Leinonen Group CEO

Contact Us

Use the form to send a quick inquiry.

contact@leinonen.eu

Looking for service in a different country?