Elysse Bell is a finance and business writer for Investopedia. She writes about small business, personal finance, technology, and more. Erika Rasure is globally-recognized as a leading consumer ...

The world of microeconomics and business decision-making hinges upon a key concept: marginal cost. In the simplest terms, marginal cost represents the expense incurred to produce an additional unit of ...

Businesses are primarily successful based on how much money they make or their revenue. But while anyone can roughly grasp revenue, what it means and why it’s essential, revenue as a business figure ...

Use the sales tax calculator to figure out how much sales tax you’ll potentially owe on a purchase. Many, or all, of the products featured on this page are from our advertising partners who compensate ...

There are four types of profit margin. Of these, net profit margin is used and referred to the most. Many, or all, of the products featured on this page are from our advertising partners who ...

Sales tax is a percentage of a retail price. To calculate it, convert the state sales tax percentage to a decimal, then multiply it by the retail price of the product or service. For example, let's ...

Does this sound familiar? You need to make a major purchase, so you research products, decide on the best one, and wait for the best price. You go to buy it, and the final price is more than you ...

Knowing how to calculate sales tax is important, especially if you’re saving up for a large purchase. To calculate sales tax, ...