The Auckland Council does not know the true cost to ratepayers of Mayor Len Brown's latest budget plan.
Mr Brown announced a special "transport levy" on top of an overall rates increase of 2.5 per cent, which is down from the previous figure of 3.5 per cent.
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• Average rates hike put at $200
The levy is $99 for households and $159 for businesses.
The Herald has been asking council and mayoral staff for details of the combined rates rise and levy.