SD Worx

SD Worx traces back to 1945 in Antwerp, founded to help small Belgian businesses handle payroll and social legislation, and it has grown since into one of the largest independent payroll and HR groups in Europe: subject-matter expertise in around 30 countries, delivered through SD Worx's own legal entities rather than a network of local partners.

For a company employing people in several European countries at once, that is the practical alternative to running three or four national vendors side by side, with one relationship and one platform instead.

None of that comes with a price on the website. SD Worx sells to medium and large organisations through account managers and quotes, not to a company of ten signing up on a Tuesday, and the sales process reflects that.

Ownership is worth noting too: WorxInvest, the Belgian holding company descended from SD Worx itself, holds 77.5%, with CVC Capital Partners — a European investment manager — holding the rest since 2023. It stays inside the EU on both counts, but it is a different kind of company from the founder-led vendors elsewhere on this list.

What SD Worx does well

• Statutory payroll expertise in around 30 European countries
• Own legal entities rather than local partners
• Nearly 80 years of continuity, majority Belgian-owned
• HR, pay and time management on one platform
• Built for multi-country employers, not a single market

Where SD Worx falls short

• No published pricing; enterprise sales process throughout
• Not aimed at small companies running payroll themselves
• Minority stake held by a private equity investor since 2023
• Breadth across 30 countries trades off against local depth

Standout feature. One European payroll relationship instead of four: its own entities in around 30 countries replace the usual patchwork of local partners.