The cost of a new joint strike fighter jet is now put at €59.7m each, plus €3.9m a year for maintenance and use, the Volkskrant reports on Sunday.
The paper bases its claims on documents sent to parliament by defence minister Hans Hillen on Friday.
The defence ministry wants to buy 85 jets to replace the aging fleet of F-16s. A final decision has been put off until the next cabinet period, but the current government does want to buy two test planes.
Hillen told MPs the first test plane will be handed over in August 2012 and the second in March 2013. The test flights will be made in the US, using Dutch pilots.