Silvio Berlusconi and other executives at his Mediaset broadcaster stood accused of inflating the price paid for TV rights via offshore companies controlled by Berlusconi, and skimming off part of the money to create illegal slush funds.
The investigation focused on television and cinema rights that Berlusconi's holding company Fininvest bought via offshore companies from US groups for 470 million euros between 1994 and 1999.
The court acquitted Mediaset chairman and Berlusconi's long-term friend Fedele Confalonieri, for whom prosecutors had sought a sentence of three years and four months.
Media reports in Italy suggest lawyers for Silvio Berlusconi are to appeal against his jail sentence for tax fraud.
The former Prime Minister of Italy Silvio Berlusconi has been sentenced to four years in prison for his part in a tax evasion scheme.