Statistics New Zealand’s price indexes are commonly used by New Zealand businesses in contract indexation clauses (also known as contract escalation clauses). This guide provides information on the price indexes produced by Statistics NZ and on issues relating to their use in such clauses. The guide also outlines some points to consider when preparing an indexation clause and includes an example of the mechanics of a simple indexation formula.
The contract indexation guide was first published in December 1998 and then updated in 2005 to incorporate subsequent changes in the price indexes, including calculation methodologies, weightings, and coverage. This version was updated in 2009.
Published in November 2009
ISBN 978-0-478-35374-7 (online)