A commercial or business loan is structured purely for business use. There are a number of different commercial loan products such as, secured or unsecured, small business or start up loans, purchasing a new business loan and professional loans (doctors, dentists etc.). With the diverse nature of commercial loans, each with a unique structure, they also have different specialist lenders. Interest rates with commercial loans can be fixed or variable, and varying repayment periods from under a year, or up to 25 years or more. As per other loan products security available or equity can also affect the cost of a loan.