The staging of the Dubai Duty Free Irish Open last year contributed to Lahinch Golf Club recording a 'not unexpected' operating loss of €564,148.
The Co Clare golf club's 2019 accounts show that the successful hosting of the Irish Open and men's home internationals - along with an increase in guest tee time intervals from 10 to 12 minutes - contributed to income from green fees falling by 19pc to €1.88m.
Revenues this year have been further hit by closure due to Covid-19 and the club is currently preparing to reopen next week as the Government relaxes restrictions.
In his report to members, club chairman Martin O'Sullivan said that the club is "reviewing our five-year financial projections in light of Covid-19".
Mr O'Sullivan said: "We are confident that through prudent management of our costs and cost base combined with judicious use of our contingency fund, we can successfully ride out the current storm."
The staging of the Irish Open, which was won by Spain's Jon Rahm, resulted in direct costs of €159,303, with staff and related costs up by €224,748, he said.