The Taoiseach Leo Varadkar said he has not given up on introducing a new tax band for middle-income earners.
In advance of the last budget Mr Varadkar was calling for a new 30% rate of income tax to ensure people did not hit the highest rate of tax on average salaries.
Speaking in in New York, Mr Varadkar was asked if he has given up on that idea this year.
"I haven't, but I don't anticipate it's going to be in this budget," he said.
"A lot of work would have to be done for it to be put in place, and the Revenue have given us a report - which you've probably seen - that talks about new IT systems and payroll systems and a very long lead-in time."
Mr Varadkar said there will be tax cuts for workers when the budget is announced next month.
"We started reducing income tax and USC back in 2014; somebody who earns €40,000 or more now pays €3,000 less in income tax and USC than they did in 2014," he said.
"This is an area where I feel we've really made a lot of progress, and I want us to make more progress in this budget - particularly now because people are getting pay increases across the economy, because prices are rising.
"I don't want them losing half, or more than half of that, on income tax, USC and PRSI," he added.
Why are the Taoiseach and the Tánaiste missing the start of a new session in the Dáil? Newstalk's Political Correspondent, @SeanDefoe braves the New York rain outside the UN Headquarters, to give you the explanation ☔️ pic.twitter.com/JUnu3AuVrk
— NewstalkFM (@NewstalkFM) September 18, 2023
The United Nations General Assembly opens in New York on Tuesday, with dignitaries from more than 190 countries attending.
All three coalition party leaders are in the US for the event.
The big guest is Ukrainian President Volodymyr Zelenskyy, who is seeking continued support in his country's fight against the Russian invasion
Ireland's national address is due on Friday but the three coalition party leaders have plenty on their plates today including bilaterals with a number of world leaders.
On Monday evening, Taoiseach Leo Varadkar met the UN Secretary-General António Guterres and it is expected there will be a declaration in the key Sustainable Development Goal summit.
Ireland has been co-hosting the summit with Qatar, hoping to get agreement to push 2030 targets very firmly back on track.