[Skripsi ini membahas tentang simulasi perhitungan model kontrak PSC lama dan kontrak PSC baru. Skripsi ini juga membahas mengenai hasil simulasi kontrak karya dan kontrak jasa apabila diterapkan di Indonesia. Skripsi ini menemukan bahwa kontrak karya apabila diterapkan di Indonesia akan memberikan arus kas bersih yang lebih kompetitif dan prospektif dibanding jenis kontrak lainnya. Oleh karena itu, pemerintah harus dapat memikirkan untuk dapat mengubah desain model kontrak migas PSC menjadi kontrak karya dalam rangka meningkatkan penerimaan negara dari industri migas.;The focus of the study is to simulate the calculation of old establishment of PSC contract and new establishment of PSC contract in Indonesia. The study also provides simulation of concessionary contract and service contract if government is willing to apply these contracts in Indonesian oil industry. The study finds out that if Indonesia applies concessionary contract, the probability of gaining more oil revenues are both prospectively and competitively attainable. Therefore, Indonesian government should think to revise production sharing contract system to concessionary contract system in order to respond the declining performance of oil industry and possibility of gaining more government take over oil and gas industry over the life span.;The focus of the study is to simulate the calculation of old establishment of PSC contract and new establishment of PSC contract in Indonesia. The study also provides simulation of concessionary contract and service contract if government is willing to apply these contracts in Indonesian oil industry. The study finds out that if Indonesia applies concessionary contract, the probability of gaining more oil revenues are both prospectively and competitively attainable. Therefore, Indonesian government should think to revise production sharing contract system to concessionary contract system in order to respond the declining performance of oil industry and possibility of gaining more government take over oil and gas industry over the life span.;The focus of the study is to simulate the calculation of old establishment of PSC contract and new establishment of PSC contract in Indonesia. The study also provides simulation of concessionary contract and service contract if government is willing to apply these contracts in Indonesian oil industry. The study finds out that if Indonesia applies concessionary contract, the probability of gaining more oil revenues are both prospectively and competitively attainable. Therefore, Indonesian government should think to revise production sharing contract system to concessionary contract system in order to respond the declining performance of oil industry and possibility of gaining more government take over oil and gas industry over the life span., The focus of the study is to simulate the calculation of old establishment of PSC contract and new establishment of PSC contract in Indonesia. The study also provides simulation of concessionary contract and service contract if government is willing to apply these contracts in Indonesian oil industry. The study finds out that if Indonesia applies concessionary contract, the probability of gaining more oil revenues are both prospectively and competitively attainable. Therefore, Indonesian government should think to revise production sharing contract system to concessionary contract system in order to respond the declining performance of oil industry and possibility of gaining more government take over oil and gas industry over the life span.]