Which of the following is true about Health Savings Accounts (HSAs)?

Health Savings Accounts (HSAs) provide unique tax advantages, making option B the correct choice. Contributions made to an HSA are tax-deductible, meaning that individuals can reduce their taxable income by the amount they contribute. Additionally, any interest or investment income earned within the account grows tax-deferred, allowing the funds to increase without immediate tax liabilities. This characteristic is significant as it encourages individuals to save for medical expenses, providing not only a way to manage health costs but also offering benefits similar to retirement accounts.

The other options lack key elements that define HSAs. For instance, HSAs are accessible to individuals, not just businesses, making option A inaccurate. With regard to the spending of funds, HSAs do not impose any requirement that the funds must be spent within the calendar year; instead, the money in an HSA can roll over indefinitely, distinguishing it from Flexible Spending Accounts (FSAs), thus invalidating option C. Finally, HSAs are not exclusive to high-income earners, as anyone with a qualifying high-deductible health plan can open and contribute to an HSA, which negates option D.