Minister says grey areas on interest tax deductability still need to be sorted. Revenue Minister David Parker is adamant other investors will not be caught up in the tax changes property investors now face, even though he says wealthy people have tax advantages low-income earners do not. Parker told NBR that it was undoubtedly true that wealthy people could more easily hide their income, even though that behaviour wasn't illegal. “If you’ve got deeper pockets, you’re well able to, or better able to, buy the advice to maximise your tax minimisation structures. You’re able to invest in investments that might not be accessible to people who are of smaller means, lower means, therefore