Wolters Kluwer ADDISON Schnittstellen is an integration ecosystem for the ADDISON tax and accounting suite that enables structured data exchange between tax/accounting firms and client third-party systems via ADDISON OneClick, SMART Connect, and file import/export mechanisms.
Published May 16, 2026
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| Aspect | ADDISON Schnittstellen (OneClick/SMART Connect) | DATEV (e.g., Unternehmen online + ecosystem) | Client-side tools (lexoffice / sevdesk + exports/connectors) |
|---|---|---|---|
| Starting Price | Not publicly specified for Schnittstellen | Varies; product pricing is complex and often not directly comparable | Published client subscription pricing available from the vendor |
| Best For | Kanzleien standardized on ADDISON that aim to centralize collaboration via OneClick and partner connectors | Kanzleien with strong DATEV adoption and vendors that prioritize DATEV connectivity | SMEs seeking simple bookkeeping with straightforward handoff to Kanzlei via exports |
| Key Strength | Partner listings and SMART Connect partner ecosystem; recognized audit coverage exists for SMART Connect/Box scope | Large market penetration in Germany; many third-party vendors prioritize DATEV integration | Low-friction client workflows and typically clearer published pricing for client subscriptions |
| Key Weakness | Some integrations may require intermediate steps or file conversions; public pricing for connectors is limited | Complexity and perceived pricing opacity in certain scenarios | Not a Kanzlei production suite; Kanzlei workflows require export/import to a Kanzlei system |