Loan structures

1. Type of loan: Loans can be personal, business, or for specific purposes such as mortgages, student loans, or car loans. The conditions of the loan will vary accordingly. 

2. Interest Rates: These loans can have either a fixed or variable interest rate. A fixed rate means the interest remains the same for the life of the loan, while a variable rate can change based on market conditions.

3. Loan Terms: This refers to the period within which the loan must be repaid. This can range from short-term (such as a few months for a payday loan) to long-term (like 30 years for a mortgage).

4. Repayment Structure: Loans can have different repayment structures. Principal and interest loans require borrowers to repay a portion of the principal (the amount borrowed) and the interest at each instalment, while interest-only loans require only interest payments for a certain period before principal repayments begin.

5. Security: Some loans are secured, meaning they require collateral (such as property for a mortgage), while others are unsecured, typically having higher interest rates due to increased risk to the lender.

6. Fees and Charges: These can include application fees, annual fees, late payment fees, and more, varying by the lender and the type of loan.