Climate Change Minister Paula Bennett says removing a carbon credit subsidy for businesses could cost households between $30 and $40 a year.
The minister urged businesses to think twice about passing on the costs of their climate change obligations in the form of higher petrol and power bills.
Parliament voted unanimously today to scrap a "1 for 2" subsidy which halved the cost of carbon credits for companies to cover their greenhouse gas emissions.
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The subsidy was introduced during the Global Financial Crisis to protect businesses, but was no longer considered necessary now that the economy had stabilised.