The Finance Minister expects the official inflation figure to rise when it's released later this week.
Figures out last week showed food prices were 7.6 per cent higher compared to March last year.
The Reserve Bank last week raised its cash rate by the biggest increase in 22 years to combat rampant inflation.
Grant Robertson told Morning Report all commentators are predicting an increase.
"This is a global phenomenon. It's driven by supply chain constraints, the impacts of Covid, the war in Ukraine. Everywhere around the world, we're seeing this. The UK and the US are up over 8 percent now. So, this is something that the whole world is dealing with."
Robertson says it is causing a crisis for some households.
