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The police budget is frozen at just under $1.5bn for the third year in a row.
And Serious Fraud Office funding drops to $7.6m after a temporary cash boost last year.
Police Minister Anne Tolley said the force is targeting resources on crime prevention and frontline policing.
She credits intelligence gathering and "smarter" deployment for a 20 per cent fall in crime over four years, although this mirrors a global trend.
One-off spending increases for a human resources and finance restructure, and the retention of a road policing underspend, are not required this year.
But the freeze is an effective cut, with inflation factoring in. It is likely to put the coffers under pressure, with top brass required to find money for annual mandatory pay rises.
The Government aims to slash both overall crime rates and re-offending by a quarter by 2017.
Meanwhile, in the justice portfolio, minister Judith Collins has announced a $7m funding injection for the Privacy Commissioner over four years.
The office will get $336,000 extra this year, rising to $1.9m next year, and an annual $1.7m thereafter.
Collins said it comes at a time when advances in technology are "dramatically" changing how personal information is collected.