IRFU chief executive Philip Browne has admitted that losing Ireland's best players to the Top 14 remains a concern.
Despite retaining the services of key internationals including Jamie Heaslip and Sean O'Brien, Browne is aware of the financial lure to move to France.
Fly-half Jonathan Sexton is currently based in Paris but otherwise the IRFU have done well to keep Ireland's top players in the country.
The IRFU announced that the last financial year had been better than expected thanks to success in the Six Nations and with Leinster, Munster and Ulster all reaching the last eight of the Heineken Cup.
The figures included a €7.3m surplus and only an overall deficit of €1m, an improvement from last year's €4.5m.
"The sort of money that is available in France, of course we've got to be concerned," Browne told the Irish Times.
"We've done pretty well with limited financial resources and limited playing resources over the years.
"We have to look at our business model, number one and maybe have to look at bringing in private money.
"Some of the provinces have been quite successful at generating private money."