Wolters Kluwer specializes in publishing books, documents, and journals. Net sales break down by market as follows:
- law, accountancy and taxation (68.6%): content published primarily under the titles ProSystem fx, Kluwer Law International and TaxWise;
- health and science (20.7%): Facts & Comparisons, Lippincott Williams & Wilkins, Medi-Span, etc.;
- finance and business management (10.7%): CCH, Gainskeeper, BizFillings, CT TyMetrix, Expere, etc.
The group's content is marketed in the form of publications on paper, downloaded electronically, and on CD-ROM.
Net sales break down geographically as follows: the Netherlands (5.2%), Europe (34.9%), North America (53.6%), Asia-Pacific (5.4%) and other (0.9%).