Interest Rates: How Low Can They Go? The question used to be, “How low can interest rates go?” Now it's, “How long can rates remain at their historic low levels?” Share | Related Content Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.