While your Betterment account is as easy to use as an online savings account with a bank, there are a few main differences. Although most bank accounts are guaranteed not to lose value, there is a possibility that your savings interest rate may not keep up with inflation over time. As a result, a Betterment account can be more beneficial than a bank savings account due to the possibility of higher returns. Given the nature of investing, your Betterment account could lose value depending on market conditions, however the amount of risk you want to take is up to you, and is controlled by setting your allocation between a higher-return Stock Market Portfolio and an ultra-safe Treasury Bond Portfolio.