The Associate Finance Minister says it'll be 'a bit of both' when asked whether cost-savings from tax relief are passed onto tenants.

The Government's phasing out interest limitation rules which stop residential property investors from writing off mortgage interest expenses.

Landlords can claim 80 percent of their interest expenses from next month, and 100 percent from April next year.

David Seymour says it's hard to say where the costs and savings will fall, but logic suggests at least some benefit will go to renters, and some to landlords.

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