Three officers, acting independently, took action to subdue the man so he could be arrested.
One officer released a police dog, which bit the man on his arm. The man fought the dog off.
Another officer released a second police dog, which bit the man on his leg and at the same time, a third officer tasered the man.
The third officer then discharged his taser twice more before the man was handcuffed. All three officers acted within seconds of each other.
The IPCA found the first officer was justified in his actions because the man posed a threat and needed to be subdued as soon as possible. The second officer was also justified, as his police dog needed to assist the first dog.
The IPCA accepted the third officer feared imminent assault and discharged his taser in self-defence as he did not have enough time to recognise the dogs had control of the man.
However, the IPCA found from then on the man was trying to comply with police and was attempting to protect himself. The repeated use of a taser during this period was "excessive and unjustified".
"Police were justified in using police dogs to apprehend the man, who was clearly drug-affected, and presented a threat to the officers," IPCA chair Judge Colin Doherty said.
"Officer C was justified in using a taser to defend himself initially, but was not justified in firing his taser two more times."
Waikato District Commander Superintendent Bruce Bird said police acknowledged the IPCA findings.
"These tools are only used in high-risk situations and serve as a reminder of why offenders should comply with police instructions.
"We acknowledge that the officer who discharged the taser considered a range of factors, however we accept the finding that the use of force was not proportionate after the first use.
"Our staff work in a dynamic environment and regularly have to make difficult decisions in seconds. We don't always get it right but when we get it wrong we work to ensure we learn from it.
"This has highlighted that we have work to do around the coordination, communication and use of multiple tactical options when apprehending an offender."