Innovative Technology Driving Efficiency and Precision

Grant Thornton’s audit methodology is designed to ensure consistent and standardized audit quality, wherever services are delivered. All member firms globally apply a unified approach through Horizon™, implemented via the electronic audit platform Voyager. Built on a risk-based audit framework, Voyager supports all current local and international auditing standards, including ISA and US-GAAS.

Beyond professional expertise, our audit software provides a clear and structured process for executing financial audits. It seamlessly covers all phases - from independence checks and proposal issuance to reporting and electronic archiving of working papers - documented in full compliance with legal requirements and optimized for efficiency. Our audit teams also leverage IDEA, a powerful data extraction and analytics tool, to process large volumes of financial data and generate insights within seconds.

To learn more about our audit methodology, we invite you to read our latest Transparency Report (Transparenzbericht | Grant Thornton Austria).

A Globally Consistent Audit Methodology

GTI Horizon™ is Grant Thornton International’s unified, business process- and risk-oriented audit approach. It ensures that group auditors and component auditors across jurisdictions speak the same language, bridging communication gaps and enabling seamless collaboration in cross-border group audits.

This methodology is supported by Grant Thornton Voyager™, a globally standardized audit platform that facilitates methodological alignment and consistent quality assurance throughout the audit process. Voyager is built on the International Standards on Auditing (ISA) and is designed to support the execution of complex international group audits.

Both the methodology and the supporting technology are continuously reviewed and enhanced to reflect evolving regulatory requirements and professional best practices by ensuring clarity, consistency, and confidence across all engagements.