In a statement released on Tuesday, a prosecutor in Madrid said the 54-year-old had committed two counts of tax fraud in 2011 and 2012, saying that "corporate structures were used by the accused in order to hide revenues generated from his image rights".
In addition, they say he only declared 11.5 million euros of Spanish-related income from 2011 to 2014, while what he really earned during that time was close to 43 million euros.
Real Madrid have refuted claims Jose Mourinho signed a contract to take over at the club before he left Inter.
His decision may not be welcomed by Real Madrid who are understood to be in favour of the player making the gesture before he appears before Madrid judge Mónica Gómez Ferrer on July 31.
Mourinho's agents said he had already dealt with questions raised by tax authorities in 2015, settling issues with his 2011 and 2012 filings and reaching a settlement regarding 2013.
Mourinho (54) coached Madrid from 2010-13.
Big Banks Survive Stress Tests
The results of the central bank's so-called stress tests showed 34 major lenders were on solid capital footing, it said. The tests are part of the Dodd-Frank reforms put in place after the recession to protect against another crisis.
CR7 is now involved in a case opened by the Madrid Prosecutor's Office for an alleged tax fraud worth 14.7 million euros.
Spanish prosecutors have kept up their pressure on football's alleged tax avoiders with Manchester United manager José Mourinho being the latest to be dragged before the courts.
Under Spanish law prison sentences of less than two years are generally suspended providing there are no previous convictions, meaning Di Maria will avoid any actual jail time.
They say that in 2010, Ronaldo set up a company to manage his image rights in the British Virgin Islands but then transferred those rights to a second company in Ireland, exclusively for the goal of creating a "screen" to confuse Spanish tax authorities.
Lionel Messi and his father Jorge, who managed his finances, were convicted of defrauding Spain of €4.1 million (£3.5 million) in taxes in 2016.
In 2016, Barcelona defender Javier Mascherano received a one-year suspended prison sentence for tax fraud while Barca superstars Lionel Messi and Neymar are both now awaiting court decisions.