Plans to hike the international visitor levy to as high as $100, have been met with opposition.
Price spreading could be stemmed by legislation and a new fuel distributor entering the South Island market.
Total tax revenue rose 6.1% to $80.22b while spending lagged estimates.
Can farms still be profitable if they face tougher rules on nutrient pollution?
Coalition does not want to disadvantage Maori with new rules on water pollution.
Maori landowners likely to be treated differently.
National needs more nuanced political strategy to combat Jacinda Ardern.
Plus: The National Party leader says his party will not introduce any new taxes should it be elected to power next time around.
Foreign investors want guarantees about future timber supplies.
Tax review not "a big revenue grab", finance minister says.