Corruption is a challenge to aid organizations and donor countries such as the Swedish International Development Cooperation Agency, Sida. Corruption within a country’s ruling power or public sector is an obstacle to development resulting in bribery and embezzlement of aid funds. In this paper I am going to analyze if the regulation and formation of aid change due to corruption in recipient countries looking into the work of Sida in the three east African countries Tanzania, Zambia and Zimbabwe. Using theories from Rothstein, Cremer and Rose-Ackerman I explain the effects of corruption on aid as well as the ongoing debate of how to defeat corruption. Studying the three countries and Sida the result shows that corruption alters both the regulation and formation of aid. The regulation and control tend to increase while the formation become more project based and oriented towards anti-corruption efforts.