Melbourne, - Roger Federer has been noted as one of the 300 richest people in Switzerland by business magazine Bilanz, with a net worth estimated at between 100 and 160 million dollars.

While the world number two heads the all-time ATP prize money list on 43 million dollars in prize money and counting, most of Federer's earnings occur off-court under the tutelage of IMG, which is said to have trebled his annual income to around 35 million dollars.

The 13-time Grand Slam winner recently strengthened his bottom line in these troubled economic times, signing an eight-year contract with longtime clothing supplier Nike for a record 130 million dollars.

While players complain about a long season, exhibition matches at 1 million dollars a pop in the case of Federer can be quick little earners, according to the magazine, which total around six per year for the Swiss.

As a Swiss, Federer is ineligible for one of the lucrative tax deals offered to rich foreigners form sportsmen to entertainers to business men. But he did recently switch his fiscal canton to Wollerau south of Zurich, a lakeside locale favoured by high earners. (dpa)