Cricket Australia chief executive James Sutherland said the donation was a morale booster for organisers of the charity match, who have faced major logistical problems in setting up the event at short notice.
Sutherland said organisers now knew the MCG match would at least make a tangible difference to tsunami victims.
"Pulling a match of this scale together in little over a week has been a mammoth task, which has only been possible because of the goodwill of so many organisations and individuals," he said in a statement on Thursday.
The January 10 match is expected to make about five million dollars, including gate takings at the 78,000 capacity MCG, international broadcast rights and the proceeds of a concurrent telethon organised by Australian host broadcaster Channel Nine.
Almost 41,500 tickets had been sold for the match in just two days and organisers are hoping for a sell-out.