The concept of financial report readability and tone ambiguity has been studying for long time in the world, however, it has not been developed in Vietnam. This paper examines the impact of a firm’s financial report readability and ambiguous tone on bank contracting terms from Vietnam’s perspective in comparison to empirical finding results in Ertugrul, Lei, Qiu, and Wan (2017). We conduct a survey to Vietnamese bankers who works in sales and risk management positions with loan contracting negotiation experience in various banks. Results based on 103 responses reveal that firms with more readable and lower frequencies of uncertain and weak modal words in financial reports are charged lower loan interest rates, and associated with larger loans, loans with longer maturities, whereas surprisingly, a greater likelihood of security requirements and more covenants. The study contributes to the development of further researches on textual aspects and suggest the guiding role on using plain language in Vietnamese financial disclosures.