The Department of the Prime Minister and Cabinet (DPMC) is a government department that operates as a main point of support for the Prime Minister and Cabinet in New Zealand. It is tasked with the delivery of various strategic intentions and responsibilities. The department is composed of various business units and runs several programmes aimed at fulfilling its mandate.

The DPMC provides a wide range of support services. Starting with the Prime Minister and the Cabinet, it offers robust backing to the Governor-General, in addition to addressing other roles and responsibilities. One of these other duties includes managing requests made under the Official Information Act, offering tips for requesting information and guidance on how they respond to these requests.

Furthermore, the department has a history section, thus enabling visitors to gain detailed insights about its past. For job seekers, the opportunity to explore careers within the DPMC is provided under a dedicated section on the website. Also available are specifics of how the DPMC organizes its business units, detailing their roles and responsibilities, thus enhancing the transparency and procedural understanding for the public.

Well defined is the structure pertaining to the Cabinet Office. Herein, statutory and formal responsibilities are meticulously delineated. This extends to how the Cabinet Committees function, as well as procedures related to Elections and more. Furthermore, the department publishes an informative Cabinet Manual which serves as a guide consisting of aspects like Sovereign of New Zealand, Governor-General, the Executive Council, and more.

One of the key services includes comprehending the facets of Ministers of the Crown: Appointment, Role, and Conduct. An insight into the appointment process, duties, and conduct of the Prime Minister, Deputy Prime Minister, Ministers, Parliamentary Under-Secretaries, and Parliamentary Private Secretaries is well displayed.

In addition to this, there is a separate section dedicated to the New Zealand Royal Honours System and the rules of Heraldry. The Order of Precedence further enhances the understanding of governmental procedures and norms.

On the whole, the Department of the Prime Minister and Cabinet (DPMC) functions as an essential arm of the government, offering comprehensive understanding and support to the machinery of governance and taking significant steps toward transparency and public involvement.