EY has been appointed to do a £200,000 review of Guernsey's corporate tax options.
It is part of work to find how best to raise an extra £85 million a year to plug a shortfall in public finances.
Policy and Resources has appointed EY to look at new ways to generate money from local businesses, saying they need to make sure whatever they introduce doesn't put off employers or affect jobs for islanders.
"EY were appointed because they can offer locally-based professionals with an excellent understanding of the Islands and the situation they currently face, together with global EY expertise in tax policy, economics and a deep understanding of the current international tax framework." - States of Guernsey statement.
It was due to be held in July and include the controversial suggestion of bringing in a Goods and Services Tax (GST)
P&R said the delay until the autumn or winter would also allow more evidence to be gathered from the ongoing review into population and immigration.
EY will report back in the summer