Yes. Lexoffice is ISO 27001 certified (German data security standards). The access is , and your advisor must log in with their own credentials (2-factor authentication available). You can revoke the access at any time with one click.
The is not just a feature; it is the standard for digital-first accounting in Germany. It creates a single source of truth, eliminates friction, and allows your tax advisor to act as a real-time business partner rather than a historical archivist. lexoffice steuerberater zugang