Русско-англо-русский юридический словарь

A floating interest rate, also known as a variable or adjustable rate, refers to any type of debt instrument, such as a loan, bond, mortgage, or credit, that does not have a fixed rate of interest over the life of the instrument. (Wikipedia)

DEFINITION of 'Fixed Interest Rate'. An interest rate on a liability, such as a loan or mortgage, that remains fixed either for the entire term of the loan or for part of this term. A fixed interest rate may be attractive to a borrower who feels that the interest rate might rise over the term of the loan, which would increase his or her interest expense. (Investopedia)

advance fee: money that you pay to a person or company before receiving something such as a loan or investment (Cambridge Business English Dictionary)

Even if you receive money as a loan rather than a gift, the impact of that loan can have lasting ... (Cake Blog)