waikariboy:
does anyone know how often RUC rates go up?
Since 2012, they go up when petrol taxes go. Such that a light RUC vehicle pays the same as a petrol vehicle consuming 9.5L/100k. That number is the key issue here. An old previa uses quite a bit more than that, but a Yaris hybrid uses three point something L/100km...
On petrol tax increases, current administration has replaced the a series of gradual increases starting in mid-2026 proposed by the prior administration, with a single 12c increase all at once in 2027. One would hope there are not increases for a few years after that, given that increase is around 17%.
Recent history of RUC rates (AI generated):
Effective Date
RUC Rate (NZD)
Notes
Pre-2012
Varies
Rates were not aligned with petrol excise equivalents.
July 2012
$62
First alignment with petrol excise duty (FED) equivalent.
July 2013
$68
Annual adjustment.
July 2014
$72
Continued alignment with FED.
July 2015–2019
$76
Rate stabilized at $76 per 1,000 km.
July 2020
$76
Confirmed as standard rate
April 2022–June 2023
$49 (approx.)
Temporary 36% discount during cost-of-living relief
July 2023
$76
Discount ended; standard rate reinstated.
April 2024
$76
EVs and PHEVs begin paying RUC at this rate


