An 11th-hour appeal by his legal team succeeded in getting the case postponed, a hold-up that sparked fresh criticism of the new government's failure to swiftly bring him to justice.
But a judge reportedly ruled that the trial -- related to just a small amount of the total sum allegedly looted -- should now proceed, and a prosecutor confirmed it would start on Wednesday.
"Prosecutors are ready and we will call the witnesses on Wednesday to provide the evidence," V. Sithambaram, a criminal lawyer on the prosecution team, told AFP.
The 1MDB scandal played a major part in persuading voters to oust Najib's coalition after six decades in power at elections in May last year, and he has been hit with dozens of charges over the controversy.
He denies wrongdoing.
In next week's trial, Najib faces seven charges and is accused of pocketing 42 million ringgit ($10.3 million) from SRC International, a former unit of 1MDB.
It is just one of several trials Najib, who is free on bail, is expected to face over 1MDB.
Cynthia Gabriel, head of the non-profit group The Centre to Combat Corruption and Cronyism, welcomed the news but said that Malaysians had been "kept waiting for too long".
"Malaysia's have not forgotten Najib's crimes of theft amounting to billions," she told AFP.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)