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BBC Guidance

Page updated 8 Mar 2017

There are a range of types of business cases depending on the decision being sought, the nature of programme or project and the associated scale, risk and uncertainty.

Prior to commencing a business case it is recommended that the approach be agreed at an early stage between the sponsor/s and the reviewer/s, in particular:

  •  the business case pathway
  •  the assurance pathway
  •  the decision pathway.

We suggest the senior responsible owner (ie, sponsor), use the Point of entry document bbc-invest-proposal.doc (88 KB) to agree the approach, including the methods (and tools) and effort with the reviewer. In the State Sector, investment intensive agencies can engage with the Corporate Centre to secure this agreement through business case clinics.

We provide a range of business case products to support senior responsible owners (ie, sponsors), business case developers and reviewers.

Business case type

Guidance booklet


A3 one pager

Reviewer Assessment Tool

to understand the standard

to write the business case

to present the business case


Programme Business Cases


Strategic assessment

bbc-strass-gd.pdf (429 KB)

bbc-strass-tp.doc (108 KB)


bbc-strass-at.doc (2,212 KB)

Programme business case

bbc-prgbus-gd.pdf (497 KB)

bbc-prgbus-tp.doc (388 KB)

bbc-prgbus-pr-v2.ppt (391 KB)

bbc-prgbus-at.doc (2,226 KB)

Project business cases


Strategic assessment

bbc-strass-gd.pdf (429KB)

bbc-strass-tp.doc (108 KB)


bbc-strass-at.doc (2,212 KB)

Indicative business case

bbc-indbus-gd.pdf (560 KB)

bbc-indbus-tp.doc (281 KB)

bbc-indbus-pr-v2.ppt (399 KB)

bbc-indbus-at.doc (2,227 KB)

Detailed business case

bbc-detbus-gd.pdf (717 KB)

bbc-detbus-tp.doc (264 KB)

bbc-detbus-pr-v2.ppt (421 KB)

bbc-detbus-at.doc (2,228 KB)

Implementation business case

bbc-impl-gd.pdf (452 KB)

bbc-impl-tp.doc (214 KB)


bbc-impl-at.doc (2,221 KB)

Single-stage business case

bbc-sinstg-gd.pdf (685 KB)

bbc-sinstg-tp.doc (365 KB)

bbc-sinstg-pr-v2.ppt (421 KB)

bbc-sinstg-at.doc (2,238 KB)

Single-stage (light) business case

bbc-sinstg-gd.pdf (685 KB)

bbc-sinstglt-tp.doc (147 KB)



For more guidance on managing benefits from programmes and projects, including benefits templates, please see Benefits Guidance.

The main changes to the guidance are to:

  • clarify what's expected to ensure the business case is fit for purpose
  • bring a principles-based approach to the use of methods and tools for gathering the evidence needed to develop the business case
  • give greater clarity of the relationship between strategy and policy
  • provide greater clarity on how each type of business case supports what types of decisions being sought in the Governments annual budget process
  • incorporate recent changes to the Government Procurement Branch's guidance, including the need for early market engagement
  • replace multiple scoping documents into one point of entry document to agree the business case approach.

The New Zealand version of the Better Business Case guidance is based on international guidance available here There are a few differences between the NZ and international version that you can read about in bbc-comparison-pres.pdf (103 KB) with more detail in bbc-comparison-detail.pdf (116 KB). This also shows how the NZ version of the Better Business Case guidance compares to the New Zealand Transport Agency’s (NZTA) Business Case Approach. In early 2017 the NZTA will begin reviewing how they apply the Business Case Approach.  This review will look at the number and timing of decision gateways and look to bring the Business Case Approach into closer alignment with the Better Business Case model.


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