The tax changes unveiled by John Key today include plans to provide Inland Revenue with new powers to share information about tax debts with credit rating agencies.
David Snell, EY executive director tax, said the changes provided further illustration that the "the tide is going out for tax secrecy, with the government seeing Inland Revenue information as a significant asset to be exploited."
The provisions will be used for just "the most serious cases of non-compliance" according to the Government issues paper released today.
But the information will include child support, student loans and employer KiwiSaver payments as well as income tax, GST and PAYE debts.
"The lack of visibility of tax debt can have significant impact on other businesses," the issues paper says.