The former Mancherster United boss has avoided the prison sentence in exchange for a €2m fine.
According to the UK Independent, the 56-year-old owed €3.3m in undeclared revenue while he was managing Real Madrid in 2011 and 2012.
A press release from Mourinho's representatives Gestifute Media last year said that Mourinho paid more than €26m in taxes, with an average rate of more than 41%.
The Portuguese manager is yet to return to management since being dismissed by Manchester United last December.
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