What economic factor is NOT a restriction to the growth of savings in the US?

Low standard of living is not a restriction to the growth of savings in the U.S. In fact, a low standard of living may lead individuals to seek savings as a way to improve their financial security and quality of life. People often prioritize saving money when they perceive a need for greater financial stability, particularly in environments where resources are scarce or economic prospects are unsure.

In contrast, factors such as inflation and high levels of federal income taxes can erode the value of savings or decrease disposable income available for saving, thus functioning as barriers to saving growth. Inflation raises the cost of goods and services, which can diminish the real value of savings over time, while high taxes can reduce the amount of income that individuals have available to save. An increased standard of living generally allows for greater disposable income, which can encourage higher savings levels, so it can also be associated with a more favorable environment for saving growth.