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Registered Office

United States of America

Auditor Certification Institute

Office Hours

Monday to Friday

09:00 — 17:00 ET

Saturday & Sunday

Closed

Response Times

We aim to respond to all enquiries within 24–48 hours.

For urgent examination issues please email directly.

Complaints are acknowledged within 24–48 hours and resolved within 5 working days.

Specific Enquiries

For faster responses, contact the relevant department directly.

Applications, grades, schemes, exam results, and certification decisions.

Examinations, assessments, results, and invigilation queries.

ATP applications, course approvals, accreditation, and trainer queries.

Endorsed employer programme, team dashboards, and corporate membership.

All other questions, media requests, and partnership enquiries.

Formal complaints, appeals, and concerns about ACI services or personnel.

Many common questions are already answered in our FAQ section. Check there first for instant answers.