For many investors, high yield municipal bonds hold special allure. After all, it is easy to appreciate the high levels of tax-free income these securities promise and then imagine the wealth of opportunities this income could create.

It can also be easy—unfortunately—to let appealingly high tax-free distributions obscure the fundamentals of investing. The truth is, issuers offer high yields to attract investors who might otherwise avoid securities with a higher propensity for default.

This truth can steer fixed-income investors in different directions. Some become leery and turn to higher-rated municipal bonds or the funds that buy them. They invest in less speculative portfolios, which are surprisingly more susceptible to interest rate fluctuations. Others remain intrigued by high yield and choose to buy lower-credit bonds on their own, without regard to how hard it can be to evaluate, monitor and sell these issues.

For the investor who understands the truth about high yield investing and still dreams of high levels of tax-free income, the best approach we believe is to invest in Oppenheimer Rochester Limited Term Municipal Fund and/or Oppenheimer Rochester High Yield Municipal Fund, both of which have long histories of generating above-average, tax-free yields.1

These two national high yield funds are designed to deliver highly competitive, yield-driven total returns for investors throughout the United States, and both generate income exempt from federal personal income taxes. However, a portion of some distributions may be taxable or increase AMT exposure for some investors; distributions from capital gains are taxable as capital gains.

Oppenheimer Rochester Limited Term Municipal Fund seeks an average effective maturity (AEM) of 5 years or less, while Oppenheimer Rochester High Yield Municipal Fund does not have an AEM target.

Relative to the other 18 Rochester municipal bond funds, these two offer Rochester portfolio managers the broadest investment discretion. As such, they may be suitable for investors with a higher risk tolerance and a willingness to experience higher volatility.

The purchase of below-investment-grade issues, which is restricted to a specific percentage of fund assets at the time of purchase, is 5% for Oppenheimer Rochester Limited Term Municipal Fund.2 Oppenheimer Rochester High Yield Municipal Fund intends to hold no more than 70% of assets in below-investment-grade securities.

Both funds have large and diverse portfolios. Oppenheimer Rochester Limited Term Municipal Fund holds more than 660 securities from nearly 350 issuers and Oppenheimer Rochester High Yield Municipal Fund holds more than 1,100 securities from nearly 600 issuers.

This diversity can reduce the overall risk of owning speculative, high yield securities and can help generate competitive levels of tax-free, yield-driven total return for shareholders. Additionally, our in-house team of municipal experts conducts extensive research and seeks to capture market inefficiencies that can create yield-enhancing opportunities.

An advisor can help an investor review fund prospectuses, gain a deeper understanding of how different funds will be managed, and tailor his or her portfolio to meet individual needs for tax-free income. Our seasoned portfolio management and credit research teams are known for their yield-driven approach to creating shareholder value. All of our funds employ a security-specific, value-oriented and research-intensive approach that helps us identify many attractive but overlooked bonds. We call this investment approach the Rochester Way.

1 On June 1, 2017, Oppenheimer Rochester Limited Term Municipal Fund will be renamed as Oppenheimer Rochester Short Duration High Yield Municipal Fund.

2 The limit on the purchase of below-investment-grade issues will change to 35% of fund assets beginning June 1, 2017, coincident with the fund’s name change. Investors are encouraged to review the Fund’s prospectus and summary prospectus for additional details.