Abstract: In this study, the rationale behind and determinants of default risk premium in First Bank Of Nigeria Plc�s agricultural loan scheme were investigated for three enterprises-arable farming, poultry and fisheries. The results showed that delay in loan disbursement, prolonged drought and unexpected family expenses were principal reasons for loan default. The regression results indicated that inverse relationship exists between default risk premium and amount of loan disbursed for arable and poultry farmers. As expected a priori, a high interest rate was found to be associated with high default risk in arable farming but insignificant in the case of poultry and fishery enterprises.