Every business has operating expenses — that is, the costs of running the business. These expenses can generally be classified in two ways: Fixed expenses and variable expenses. Understanding the ...

Elvis Picardo is a regular contributor to Investopedia and has 25+ years of experience as a portfolio manager with diverse capital markets experience. Erika Rasure is globally-recognized as a leading ...

A fixed student loan's rate stays the same throughout the life of the loan, while a variable rate may fluctuate. Fixed-rate student loans are usually best if you want the stability of a constant rate ...