Banks offered RON2.2 billion, but the ministry rejected all yields above 6.24%, central bank data showed.
At the previous similar auction July 11, the ministry sold a similar RON900 million in one-year paper at an average annual yield of 6.19%.
The ministry plans to sell debt worth RON4 billion in July, up from RON3.7 billion sold a month earlier.
So far this year, Romania sold around RON33.9 billion in leu-denominated state notes. Additionally, a three-year foreign currency bond auction held May 4 has brought the ministry EUR939.2 million, while an international debt sale early June raised EUR1.5 billion. (EUR1=RON4.2685)