The Revenue Commissioners will not tax the estimated €250,000 to be raised by the landmark testimonial dinner for former GAA star Colm 'Gooch' Cooper.
The cost of booking a table for the high profile event - the first of its kind for a Gaelic footballer - is €5,000.
Each of the available 50 tables will seat 10 people.
A GAA spokesperson has confirmed they are "not happy" with the event which they insist is pushing the rules governing amateurism in the association to a new level.
While they felt they legally had no option but to give the go-ahead for the black-tie event, the GAA will not be officially represented at the dinner scheduled to take place on Friday, October 27, at the Intercontinental Hotel in Ballsbridge, Dublin.
It has now emerged the taxman will take a benign view of the money raised at the event - which is expected to attract a galaxy of sports stars.
The Revenue Commissioners confirmed money earned is not taxable where the player was not obliged - either "contractually or by custom" - to hold a testimonial.
Two charities will benefit from part of the proceeds: the Kerry Cancer Support Group and Our Lady's Hospital for Sick Children in Dublin.
Cooper (34), a former Kerry forward, won five All-Ireland titles with his county before retiring in April.