Wybrane teorie umów kredytowych – przegląd badań

The article reviews theoretical studies on the loan agreement. First, the resultsof researches in the area of the costly state verification models proving optimalityof the standard debt contract in conditions of information asymmetry and existence of costs of verification of the debtor’s outcomes were analysed. Followedby analysis of the models included in the mainstream of the incomplete contracttheory, which assume unpredictability of nature and the need to take into accountthe role of collateral and the liquidation value on the loan repayment. The focuswas also placed on researches taking into account the impact of debt renegotiationand long lender-borrower relationship on the behaviour of the borrower duringthe repayment of the debt.