Ross Tucker: Auckland Council Group chief financial officer on the blunders taking place in latest rates calculations

Some Auckland ratepayers have been getting nasty surprises when opening their newest bills for the year.

The Herald has identified a number of properties who've been overcharged, including a $3.9 million multi-unit property with an incorrect $444,766 - 11.4 percent - rates bill.

Auckland Council Group chief financial officer Ross Tucker says they process the rates bills for a huge volume of properties in Auckland.

"The best information we've got is - we think it's quite isolated...the four properties where there's been some issues are not just a single property, single house, it's ones where there's multi-units. That's one rates bill that covers multiple units."

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