Treasury will on Tuesday release its half-year economic and fiscal update (HYEFU), which lays bare the state of the economy and the Treasury's outlooks and forecasts.
It was widely expected to show a sluggish economy and weaker tax take will lead to bigger deficits for longer.
Ahead of the HYEFU update the government and opposition were already blaming each other.
It comes as Prime Minister Christopher Luxon refuses to confirm whether he will attend Waitangi Day commemorations in the Northland town next year.
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