If you don't get the basics right, those "free speed" upgrades might actually be slowing you down.

Marginal VaR measures the risk added by new investments in a portfolio. Learn its definition, how it works, calculation, and impact on overall risk management.

Marginal vs. effective tax rates are two ways to express the percentage of your income that goes to tax. But they're each used for very different purposes.

Marginal cost refers to the change in total cost arising from the production of one additional unit. For example, in a manufacturing firm, the marginal cost will give a measure of the change in total ...

Your marginal tax rate is the highest income tax rate you’ll pay on your income. Because the U.S. has a progressive tax system, different tiers of your income are taxed at different rates. The ...

Taylor Tepper covered banking, investing and pretty much everything else in personal finance for more than a decade, with his work appearing in the New York Times, Fortune and MONEY magazine, as well ...

Businesses and their customers constantly balance costs and benefits. A customer comparing menu prices decides which meal will give him the most pleasure for the price. Business production goals must ...

Each year when I complete my federal income tax return, Turbotax tells me my average tax rate—how much tax I owe measured as a percentage of my total income. But it would be better if I learned my ...

Marginal cost helps predict company profit by analyzing cost to produce extra units. Investors use the gap between marginal cost and revenue to assess profitability. Technology firms, due to low ...