Richard Cornelisse

Quantifying risks via statistical sampling

In Audit Defense, Indirect Tax Strategic Plan, Processes and Controls on 21/05/2014 at 12:00 pm

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Incoming and outgoing invoices provide important information about the scale of indirect tax risks within a company. By selecting just a limited number of transactions via a statistical sample a quick insight can be gained into the level of tax risks with minimal human effort needed.

KEY Group’s approach


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KEY Group’s team

  1. ir. Ferry Geertman (RE CISA) was Director IT Audit and Data Analytics at Deloitte Netherlands. From his background in Applied Mathematics, Ferry has vast experience in data analysis, including the design and evaluation of statistical samples as part of internal and external control.
  2. Hein Kloosterman (RE RA) used to be the chairman of the IT audit professional practice office and chairman of the statistical knowledge group of the Dutch Tax Authorities. Hein has extensive experience with the so-called integrated audits (single audits). Hein has been involved in the education in accountancy, both at Nyenrode and the Erasmus University. Hein provides advice in the field of IT audit and Statistical Audit.
  3. Robbert Hoogeveen (MSc, RA) was the Indirect Tax System and Technology Leader at Shell International. Prior to that period, Hoogeveen worked as an IT Auditor for the Dutch Tax Authority for 11 years. Robbert is specialized in the design of solutions in which tax requirements, business processes, and system functionality are integrated, the implementation and the assessment of VAT functionality in SAP and/or tax engines, the design of VAT return processes, and the audit of indirect taxes by means of statistical sampling and data analysis.

Hein and Ferry are both members of the Steering Committee Statistical Auditing. This steering group is connected to the Limperg Institute and aims to “promote the proper (effective and efficient) use of statistical methods and techniques in auditing and related audits of financial statements and reports.”

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