As one of the most important goals and values in Islamic economics, justice has an important role in Islamic financial system. When the financial system is fair, the three levels of origin (primarily financial possibilities), process (the relationship and financial processes) and results (outcome and result of the financial system) are based on justice. The justice in the relationship and financial processes is of special importance. This paper is based on Islamic teachings of the Quranic-centered approach, and aims to discover standards of justice in contracts and financial processes. The content analysis method used for the Quranic interpretation of ijtihad (comprehensivedecision) on various aspects of the issue. The survey examined the holy Quran, Hadith, jurisprudence rules and interpretations and concluded that the criteria of justice in the financial processes in the Quran are: the state of non-usury of contracts, non-prejudicial, not deviating from the provisions of the contract, distribution risk between the parties, and non-disruptive speculation and gambling.