ADDISON is Wolters Kluwer’s integrated practice software that manages compliance production (accounting, payroll, tax), practice operations (practice management, billing), and client collaboration via a cloud portal with modular data reuse across bookkeeping, payroll, and tax workflows.
Published Oct 12, 2026
| Starting Price | No comprehensive public rate card for the full suite; some add-ons have published per-user/month pricing | Complex; modules and partner pricing vary; some public lists exist for parts of the offering | Published price overview PDFs exist; pricing depends on modules/mandants/users |
| Best For | Tax firms seeking a Wolters Kluwer integrated practice suite with client portal and modular expansion | Firms that require broad ecosystem integrations and standardized market workflows | Firms seeking an established alternative suite with published pricing artifacts |
| Key Strength | Integrated modules, client portal, and vendor-provided training subscription | Broad ecosystem and market prevalence; many third-party integrations prioritize DATEV | Published pricing artifacts for some offerings; established alternative suite |
| Key Weakness | Limited independent review visibility; integration sometimes requires additional operational steps compared to DATEV; full-suite pricing is sales-led | Potentially higher costs and complexity; support perception varies | Ecosystem depth vs DATEV may be more limited depending on verticals |
DATEV vs ADDISON
Agenda vs ADDISON
Smaller upstream tools (Lexware Office, sevdesk) as complementary systems