A loan is money that is borrowed and represents a type of debt. When someone takes out a loan, the original amount of money that he or she borrows is called the principal. There are many different types of loans. Some loans differ in the way that they calculate interest. Interest represents the cost of the loan to the borrower.

A loan allows someone to redistribute his or her financial assets over time. For example, if someone wanted a new car, but didn’t have the cash to make the purchase, he or she could take out a loan to fund the purchase. Eventually, that person would make enough money to buy the car, but the loan would allow him or her to obtain the car earlier and slowly pay for it over time. The opportunity that a loan can provide comes at a cost to the borrower, and this cost is represented by the interest paid on the loan.

Understanding Interest and Compound Interest

Interest is the fee paid to the lender for the opportunity to use their cash. The percentage of the borrowed assets (the principal), that is paid over time is represented by the interest rate, which is commonly advertised by banks and financial institutions. Interest rates usually differ depending on the type of loan and the length of time the borrower has to repay the loan amount.

There are several different types of interest. The two most common types are simple interest and compound interest. Simple interest is calculated only on the principal amount. This means that the total amount of money that a borrower would pay to the lender would be dependent only on the interest rate per amount of time and the amount of periods the amount is borrowed.

The other type of interest is called compound interest. This differs from simple interest in that the total amount of interest paid is dependent on the principal and interest earned by the lender and that is added to the principal over periods of time. The addition of interest to the principal is called compounding. This type of interest is more common than simple interest in financial transactions.

A rate is usually applied to the concept of compounding. This rate describes the frequency at which interest is added to the principal. For example, interest can be compounded yearly, monthly, weekly, daily, or continuously. The more frequently the interest is compounded, the higher the equivalent interest rate becomes, and the more the borrower ends up owing to the lender.