With central banks often having significant autonomy or independence in how they pursue their objectives, Parliament, its agents (e.g. the Minister of Finance and the board of the central bank) and the public must be able to assess whether they are fulfilling their responsibilities. The public debate sometimes appears to confuse independence of objectives with independence of operation.
In New Zealand, the overriding objectives are set by the legislature; the autonomy extends only to the operational decision-making necessary to achieve the democratically set objective.