In Turkey, oilseeds are the leading of the supply deficit in agricultural products. In 2016, the country's oilseeds and derivatives imports amounted to 3,4 billion USD while sunflower and sunflower oil imports amounted to 1.3 billion USD. The amount of oilseed production in Turkey was 3,9 million tons in 2017 and the share of sunflower production was 50,56%. According to data from the same year, the area of sunflower oil production was 681.000 ha in Turkey, production and yield were 2,64 tons and the amount was 1,8 million tons / ha. The share of sunflower oil production area of the Thrace region in Turkey was 49,26%, while the share in production amount was 44,81%. Tekirdag province designated as an area of research is the first in terms of cultivation areas for oil sunflower and the production amount in the country while it holds 23% of the sunflower fields of Turkey and 20,45% of amount of sunflower oil production. Supporting policies aimed at increasing production of oilseeds are applied across Turkey. In this study, the oil sunflower cost in Tekirdag Province, one of the most important oil sunflower production centers of the country, was examined in detail; in particular, the effects of the implementation of deficiency payment on producer income were examined. Turkey is placed on the top of vegetable oil consumption. However, the country's self-sufficiency rate in sunflower production is 64%. In this study, the amount of oil sunflower production in the province of Tekirdag in 2009 was determined as 1.060,50 USD / ha, the cost per ton was 620 USD, and for 2017, these values were determined as 957 USD / ha and 420 USD, respectively. In 2009, the increase in production income in the enterprises examined was realized as 239,4 USD per hectare with the deficieny payment application while the share of difference support in oil sunflower income was 21,88%. In 2017, these values were realized as 253 USD and 18,33% respectively. However, in 2017, the unit prices in the deficiency payment applied in the oil sunflower decreased about 14% compared to 2009. This situation has negatively affected the income obtained from the production of sunflower oil.