The British Irish Chamber of Commerce has published a framework proposal which outlines how borderless trade between the UK, Ireland and the EU after Brexit could work.
The plan is based on a new customs arrangement between the UK and the EU, and its authors hope it could help unblock the current political impasse in the Brexit talks.
The "Big principles for a strong Brexit partnership" document is described by the chamber as a business response to a political problem.
At the document's heart is a new customs arrangement, which is effectively a customs union between the UK and the EU, in which there would be an agreement not to have divergent regulations and standards.
This, say its authors, would be enough to avoid borders being reimposed between the EU and the UK, and in particular it would avoid a customs border on the island of Ireland.
But the political flaw in the plan is that it does not meet the demand of the more hardline Brexiteers for Britain to be able to strike its own trade deals.
The BICC said it is publishing the document as a contribution to seeking a compromise ahead of next month's key EU summit.
John McGrane, the director-general of the British Irish Chamber of Commerce, said the proposals were being put forward as a positive contribution to the debate on the future of the EU-UK trading relationship.
"Both parties in the negotiations have spoken of their desire to find a deal that protects the open border on the island of Ireland and this paper offers a possible solution to this challenge.
"It also seeks to ensure that UK-Irish trade is not unduly undermined by the Brexit process but rather encouraged to grow after we get through this difficult phase," Mr McGrane said.
