A new business survey suggests that the business environment remains "resilient", with 40% of companies across the island reporting growth.
However, InterTradeIreland has said that the number of businesses unprepared for a no-deal Brexit is still "a worry", after its latest all-Island Business Monitor (Q2 2019) was released.
Optimism for the year ahead is in short supply, it said. The number of businesses expecting an increase in growth over the next 12 months are down to 2009 levels.
Dealing with Brexit is by far the biggest cause of this uncertain outlook. 45% of businesses overall, and almost 60% of manufacturing firms, record Brexit as the key issue they face.
But despite a range of support services, only 11% of respondents say they have made any preparations in the event of a no-deal Brexit.
In terms of getting ready for a no-deal outcome, bigger firms with more capacity are better prepared, the survey said, with 35% saying they have made preparations.
At the other extreme, only 1 in 10 micro businesses have made any preparations.
And 82% of cross-border traders, who are most exposed in the event of a no-deal, have not prepared for that outcome.
Aidan Gough, InterTradeIreland's designated officer and director of strategy and policy, said: "The disparity between businesses recognising Brexit as the key issue facing them and the number actually preparing for it remains a worry."