Auditing with added value – for transparency, trust and competitive
advantage
A2C stands for Audit to Client – and thus for an auditing philosophy that
emphasises partnership, equality and economic benefit.
We offer the complete range of audit-related services – responsive,
competent and solution-orientated. Our claim goes beyond the mere audit
certificate: we create transparency, identify risks and strengthen your
corporate management. 
Whether statutory or voluntary audits of annual and consolidated
financial statements in accordance with HGB or IFRS, reviews,
management reports or ESG reports: we combine in-depth expertise
with up-to-date regulatory know-how.
A particular focus is on auditing sustainability reporting within the
framework of the CSRD and the EU taxonomy – for reliable statements,
credible communication and dependable processes.
Modern auditing is not an end in itself – but a strategic instrument that
creates trust and secures competitive advantages.