Learn how disposable income and interest rates influence the S&P 500. Discover a proven methodology predicting a bullish ...

Disposable income is what you have left after the things you must pay, like taxes, are taken out of your check. Read on to ...

Learn about the marginal propensity to save, what it indicates about a household, and how to calculate a household's marginal ...

A person’s discretionary income is what they have left over from their disposable income (i.e., income after taxes) after all necessities have been paid for. Common necessities include food ...