Foreign investment is defined as employment of capital in an activity in which a level of risk involved.FIPPA classified foreign investment under two broad categories :

a) Legal participation (direct investment): is defined as a direct involvement of a foreign investor in the equity capital of a new or existing Iranian company. There is no restriction on the level of shareholding as well as percentage of shares belonging to foreign investors in Iranian companies. The right of foreign investor to run and control a company emanates from and is dependent upon his direct contribution in the equity capital of the concerned company.

b) Contractual arrangements: is defined as a set of mechanisms under which the utilization of foreign capital is solely based on agreements reached by the parties to a contract. In other words, the rights of the foreign investor is not yielded with his direct participation in the capital of the recipient Iranian firm, but through the arrangements agreed upon under a contract. This type of investment may be carried out in all sectors of economy. Under contractual arrangements, the return of capital and accrued profits have to be sourced only out of the economic performance of the project in which the investment is made without being dependent upon a repayment guarantee by the government, by the banking system as well as state owned companies.