Mr Lewis said that if sales tax was set at ten per cent rather than the three per cent proposed, there would be plenty of money available to introduce exemptions for essential goods and services, as well as fully fund a comprehensive income support scheme.
At a lunch last week, Mr Lewis outlined IoD policy for a higher-rate sales tax.
He also said that a ten per cent income tax rate would make Jersey more competitive compared to other international financial jurisdictions.
And he argued that although in principle a higher rate of sales tax would appear to be regressive, it followed by the nature of the tax that those who spent most paid most.
He said that at a rate of ten per cent the Island would collect about £150m a year if Finance’s calculations of collecting £45m at three per cent were correct.