This study investigates whether Saitdol loans, a type of government-guaranteed loan, were allocated to groups that would otherwise be unable to access the loan market without such a guarantee. To assess this, both non-parametric and parametric estimation methods, as proposed by Hendren (2013), were employed to examine the severity of information asymmetry between Saitdol loan borrowers and financial institutions, a potential cause of a market failure. The analysis results indicate that the information asymmetry between borrowers holding Saitdol loans and financial institutions was not severe enough to cause a market failure. This suggests that a significant number of Saitdol loans were allocated to borrowers who could have obtained loans from the private sector without government guarantees.