"We get ten million kronor from the government and the rest will be paid for by the king personally," said Jan Lindman at the Royal Court.
Staff costs are set to be the biggest expense, with information and transport also taxing funds.
"Guests need to be transported from various residences to various destinations, Lindman said.
The wedding reception dinner in the Royal Palace, to be prepared by Operkällaren's Stefano Catenacci, will also add substantially to the cost of the wedding.
"All the guests also have to be fed, with drinks and entertainment. Then the palace furniture needs to be rearranged and the old hall needs to be spruced up. The actual dinner is though the largest single item," he said.
The Royal Court receives a total of 125 million kronor from the Swedish taxpayer for 2010, eight million more than in 2009.