Berlusconi is expected to appeal against the sentence, the first he has been given after a number of previous trials and inquiries found in his favour.
He has also been barred from holding public office for three years.
The 76-year-old media tycoon was not in the courtroom for the verdict on the case which stems from dealings in his Mediaset business empire.
The prosecution had claimed Berlusconi - and 10 other defendants - had bought television rights for US films through a series of offshore companies, before falsely declaring the payments in order to avoid taxes.
Berlusconi, 76, was Italy's longest-serving post-war Prime Minister, but he resigned last November over his country's debt crisis.
He remained AC Milan's President and owner, as well as Italy's richest man. It is not clear yet what the consequences of Berlusconi's imprisonment will be for the Rossoneri.
The new PUMA evoSPEED 1.2 FG. A great new soccer cleat with classic look and first time for PUMA to be on the cleat.
The Juventus jersey for the 2013/14 was released earlier this week. Be the first to wear the colors of the Old Lady.
Borussia Dortmund hears Wembley Calling and are headed to London for the Champions League final.
The adidas Nitrocharge is the most talked about new cleat in years. It was released on May 15 and will take your pitch by storm.
adidas has added some color to the Predator line with this new colorway. Released on May 17. Be the first to own a pair.
Bayern Munich are kings of Germany and hope to be crowned kings of Europe at Wembley later this month!
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The push for more color on their cleats, adidas has added the infrared colorway to the adiZero f50 Line.
Ajax has released their away soccer jersey for the 2013/14 season. Get in the Gear.
One of the top soccer cleats for control the Nike CTR360 will not let you down on the field in tight spaces.