A consultation on the North’s tourism taxes promised by the British Government as part of its Westminster deal with the DUP has been launched by the Chancellor.
The Treasury's "call for evidence" seeks views on the future of Air Passenger Duty and tourism VAT.
APD requires passengers on short haul flights flying in or out of the North to pay around £13.
Critics of the duty claim that it is causing a reduction in the number of flights, with passengers instead opting to use Dublin Airport, where a similar duty was axed in 2014.
Many in the hospitality sector have also been campaigning for a reduction in the 20% VAT rate on the tourism sector, claiming it also puts the region at a competitive disadvantage with the South, where the rate is 9%.
Opponents of the tax cuts argue the resultant cuts to the North's block grant, to offset the shortfalls, would have a disproportionate impact on local public services.
The consultation states: "The Government wants to support the economy in Northern Ireland, and to help build on the growing success of the tourism industry there.
"Concerns have been raised about the impact of VAT and APD on tourism in the UK, and particularly in Northern Ireland.
"However, views on the potential costs and benefits of any changes are divided.
"The Government is therefore seeking evidence that demonstrates the significance of any impacts that VAT and/or APD have on tourism, or that helps show how VAT and/or APD might be used to support the growing success of the sector in Northern Ireland."
The consultation ends in June, with any resultant recommendations set to be factored in to Treasury thinking ahead of this autumn's Budget.
DUP MP Sammy Wilson welcomed the consultation.
"This is a welcome step forward for the tourism industry in Northern Ireland," he said.
"It also represents further delivery on the confidence and supply agreement.
"I have spoken with ministers to ensure that the process is concluded in time for any recommendations to be considered within the autumn Budget.
"We know this campaign has the backing of those involved in tourism within Northern Ireland.
"It is important that they engage with the consultation process and put forward the evidence the current levels of VAT and APD have on the industry here.
"Whilst Sinn Féin and some others whinge from the sidelines in Northern Ireland, once again the DUP is working with the Government in London to improve the economic prospects for everyone in Northern Ireland."