Five takeaways from today's 4.1 percent inflation figure

1 - When global oil prices spike, they hit New Zealand hard and they hit fast.I'm sure many Kiwis who filled their cars over the last three months will, at least once, have experienced that moment of shock when the price ticker at the pump climbs much further than they ever imagined. I certainly have.Today's figures confirm what we all know: when oil prices surge globally, New Zealand, as a major fuel importer, is heavily exposed at the pump.The impact on our cost of living is stark.According to Statistics New Zealand, petrol accounted for almost a quarter of the 4.1 percent annual increase.For the June quarter alone, inflation was up 1.5 percent, with petrol and diesel making up almost two-thirds of that increase.2 - But this is the peak in inflation, right? (He says as he nervously checks the latest oil price.)Inflation is at a two-year high at 4.1 percent - an uncomfortable number for sure.It is firmly outside the Reserve Bank's target band of 1 to 3 percent.But the inflation from oil prices is an event driven offshore supply shock.As global oil prices have come back down to more manageable levels in recent weeks, pump prices have fallen too. Even today, they are under $3 a litre.Inflation should begin easing back.Should, I stress, because we know there is renewed conflict involving Iran and the United States.As of this morning, global oil prices were again knocking on US$90 a barrel. Not good.But let's take a glass-half-full view.Assuming things do not get substantially worse in the Middle East, and talks resume, most economists expect inflation will gradually ease below 3 percent by early next year.3 - So, if inflation is set to ease, can the Reserve Bank chill on interest rates then?No chance.It will be picking over these numbers with a fine-tooth comb.Any evidence that the petrol price spike is starting to spill over into wider price rises in the economy will concern it.If you strip out fuel price increases, inflation, according to Statistics New Zealand, was running at 2.9 percent over the year. That's only just within the target range.According to Stats NZ, more than 80 percent of the goods and services measured in the Consumers Price Index basket increased in price in the 12 months to the June 2026 quarter.In contrast, only about 15 percent of the basket fell in price.For that reason, expect the RBNZ to keep withdrawing monetary policy stimulus this year.In other words, one or two more OCR hikes this year are very likely.4 - When it comes to home-grown inflation, what are the main culprits ?Statistics New Zealand has listed a few, including local authority rates and payments, that were up 8.8 percent over the year.Then there is electricity, another big contributor, up 12 percent, while new housing costs were also up 2.7 percent.These were all significant contributors to the annual CPI increase and are likely to draw attention.The upshot? Don't expect the political debate about electricity prices and looming council rate caps to die down anytime soon.5 - Are global price shocks and volatility from outside factors the new normal for New Zealand?It certainly feels that way at the moment!Because if ongoing worries about war in the Middle East and oil prices were not enough, BNZ economists are now flagging new concerns on the horizon.According to their latest update, rising computer chip costs, H5N1 bird flu and even the strong El Niño weather pattern denting local food production could present inflation risks.I'm going to stay optimistic for now and go with the forecasts that assume the Middle East war does calm down and inflation heads back towards more normal levels by early next year.I do however accept, it could be a bumpy ride getting there.