Economists are wracking their brains over how negotiations are set to shape the incoming Government's economic polices.

ANZ's latest economic outlook examined the fiscal outlook for the incoming National-led Government, and noted that the addition of ACT and NZ First could lead to more significant changes.

Infometrics principal economist Brad Olsen says National will face potential roadblocks in introducing tax cuts and a foreign buyers tax, as those have divided all three parties.

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