美国的DPI远高于经合组织（OECD）调查的36个国家/地区的平均$ 31,000。 应该注意的是，间接税，例如营业税和增值税（VAT），不用于计算可支配收入。 尽管它们通常会降低有效的消费能力，但个人很难追踪它们。 除个人理财外，可支配收入对国民经济也很重要。 例如，美国联邦政府使用它来衡量消费者支出和最重要的消费者物价指数（CPI），即各种商品和服务在全国范围内的平均价格。 CPI是通货膨胀，通缩或滞胀的关键指标，是衡量国家经济健康状况的关键指标。
The DPI in the United States is well above the average of $ 31,000 in the 36 countries surveyed by the OECD. It should be noted that indirect taxes, such as sales tax and value added tax (VAT), are not used to calculate disposable income. Although they often reduce effective spending power, it is difficult for individuals to track them. In addition to personal finance, disposable income is also important to the national economy. For example, the U.S. federal government uses it to measure consumer spending and, most importantly, the consumer price index (CPI), which is the average price of various goods and services across the country. CPI is a key indicator of inflation, deflation, or stagflation, and a key indicator of the health of the country’s economy.