What Does a Supplier Audit Cost? Day Rates, Effort, Practice

In short

{"title":"What Does a Supplier Audit Cost? Day Rates, Effort, Practice","description":"What a second-party/supplier audit really costs: realistic day rates, how many audit days you need, travel costs and when an external auditor beats using your own team.","answer":"A supplier audit (second-party audit) is priced by audit days: experienced auditors typically charge day rates of roughly EUR 1,000 to 2,000 per day, with travel costs billed separately. How many days you need depends on scope, the number of sites and the depth of review; a single supplier audit often runs to one to three audit days plus preparation and follow-up.","keywords":["supplier audit cost","second-party audit cost","audit day rate","AI auditor","ISO 42001 readiness","EU AI Act compliance","external auditor cost","supplier audit price","vendor audit","audit travel costs","ISO 27001 audit","auditor fees"],"readingMinutes":6,"body":[{"type":"p","text":"Unlike a certification audit, supplier and second-party audits are not bound by fixed accreditation rules on the number of days; the effort is set by your needs. That makes the cost question simpler than many assume: you pay for audit days plus travel, and we define the scope together up front."},{"type":"h2","text":"The three cost factors"},{"type":"ul","items":["Day rate: the market norm is roughly EUR 1,000 to 2,000 per audit day for experienced auditors; my rate sits between EUR 1,200 and 2,000 depending on effort and distance.","Number of audit days: depends on scope, the number of sites, depth of review and the standard in question. A single supplier audit is often one to three days on site, plus preparation and follow-up.","Travel costs: billed according to actual effort, estimated generously up front. Flight and hotel prices fluctuate, so I prefer to build in a buffer rather than invoice extra later."]},{"type":"table","headers":["Audit scope","Audit days (guide)","Total effort (excl. travel)"],"rows":[["One supplier, clear scope, remote possible","1-2 days","approx. EUR 1,500-4,000"],["One supplier on site, medium depth","2-3 days","approx. EUR 3,000-6,000"],["Multiple sites / high depth of review","3+ days","from approx. EUR 5,000"]],"caption":"Indicative market guidance as of June 2026, not an offer. We fix the exact scope and a fixed price after a short scoping call. Travel costs billed separately."},{"type":"h2","text":"External auditor or your own team?"},{"type":"p","text":"Many procurement and QM departments could in theory audit suppliers themselves, but they rarely have the capacity, the independence or the shop-floor proximity to do it well. An external auditor costs a day rate but saves internal weeks, delivers a neutral perspective and a report that carries weight both internally and with the supplier. Especially when your suppliers sit in Germany or Europe and you are further away, an auditor already on the ground is cheaper than flying in your own team."},{"type":"p","text":"We clarify the specific framework for your case in a free initial consultation or directly via the audit enquiry, and you receive a written offer within 48 hours on business days."}],"faq":[{"q":"What does a supplier audit cost per day?","a":"The market norm is roughly EUR 1,000 to 2,000 per audit day for experienced auditors, with travel costs billed separately. My rate sits between EUR 1,200 and 2,000 depending on effort and distance. The number of days depends on scope."},{"q":"How many audit days does a supplier audit take?","a":"A single supplier audit often runs to one to three audit days on site, plus preparation and follow-up. Multiple sites or a high depth of review increase the effort. We fix the scope up front during scoping."},{"q":"Is an external auditor worth it compared with your own team?","a":"Usually yes: an external auditor delivers independence, capacity and a report that carries weight, without tying up internal weeks. For German or European suppliers and a more distant site of your own, an auditor already on the ground is also cheaper than flying in a team."}]}