Join +2,000 entrepreneurs
Welcome to MonSiegeSocial
Your trusted partner to create and grow your company in Belgium
Discover our complete ecosystem of professional services designed to simplify your entrepreneurial journey
Company domiciliation
Popular
Prestigious address in the heart of Brussels with full mail management and ancillary services
From €50/month
Company formation
Popular
Full and personalised support to create your SRL, SA or ASBL in Belgium
From €3,000 for SRL and €421 for ASBL
Legal services
Expert legal support and advice to secure and develop your business activity
On personalised quote
Why choose MonSiegeSocial?
Immediate access to all our services
One platform to manage all your business needs
Full mobile application
Manage your company anywhere, 24/7
Expert customer support
Team of Belgian specialists available to assist you
YouInv Pro free for 1 year
Complete professional invoicing solution (value €600 excl. VAT)