Learn about variable life insurance and its risks and rewards.

What is a variable cost? Variable cost is a business expense which is subject to change when sales volumes change. This could mean that variable costs either increase or decrease depending on a ...

Discover how to calculate contribution margin, a key profitability metric, by subtracting variable costs from sales revenue.

Get the latest news and market analysis from our in-house experts. Unlike variable cost which is subject to change depending on volume of a product or service provided, fixed costs are those which do ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Khadija Khartit is a strategy, investment, and funding expert, and an educator of fintech ...