At S4I, we understand the unique needs of your business, and we’re proud to offer you a full range of business window, insurance fund and social secretariat services with Partena. Our partners are here to support you every step of the way, allowing you to concentrate on what you do best – growing your business.

Getting started

Business counter

Whether you're a self-employed entrepreneur, a small business or a large corporation, our Business Window service is designed to make your life easier. We'll help you manage all the administrative formalities, the steps involved in setting up or changing your business, your social security contributions and much more. With our expertise and network of partners, we guide you through every step, ensuring that everything complies with the regulations in force.

To make sure you're covered


Managing social insurance can be a challenge, especially in an ever-changing environment. Our partnership with Partena enables us to offer you simplified access to comprehensive insurance services for you and your employees. We help you choose the insurance solutions best suited to your needs, whether for health, industrial accidents, third-party liability or other areas. You can have peace of mind knowing you're covered.

Good support

Social secretary

Managing payroll, employment contracts, employee benefits and tax obligations can be tedious. Our social secretarial service is designed to relieve you of these complex administrative tasks. We work closely with you to ensure that all procedures are carried out correctly and on time. So you can concentrate on developing your business while complying with all the relevant regulations.

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Why choose us?


Our team of advisers specialise in payment solutions, which means we understand your needs perfectly.


By working with Partena, a recognised leader in the field, we are able to offer you high-quality services


We strive to tailor our services to meet the specific needs of your business. Each one is unique and we treat your needs as such.


Our services save you time and energy, leaving you free to concentrate on developing your business.