Today's the day for a major shakeup to the wide-reaching Resource Management Act

Prime Minister Chris Luxon's confirmed the big announcement is expected to eliminate the need for 46 percent of consents - and comes alongside major regional council reform.

Legislation's expected to be introduced this year, pass next year, and will be implemented by 2027.

Luxon says the RMA's held us back, for 30 years.

He says it needs to be radically simplified, and its gotten out of hand.