It is never too late to invest in mutual funds for retirement. As such, if you plan to invest in some of the best funds, the Zacks Mutual Fund Rank can provide you with valuable guidance.

The easiest way to judge a mutual fund's quality over time is by analyzing its performance, diversification, and fees. Using the Zacks Mutual Fund Rank of over 19,000 mutual funds, we've identified three outstanding mutual funds that are ideally suited to help long-term investors pursue and achieve their retirement investing goals.

Let's learn about some of Zacks' highest ranked mutual funds with low fees you may want to consider.

American Beacon Large Cap Value Institutional

(AADEX Quick QuoteAADEX - Free Report) has a 0.65% expense ratio and 0.55% management fee. AADEX is a Large Cap Value mutual fund, which invests in stocks with a market cap of $10 billion of more, but whose share prices do not reflect their intrinsic value. With yearly returns of 12.02% over the last five years, this fund clearly wins.

AMG FQ U.S. Equity N

(FQUAX Quick QuoteFQUAX - Free Report) : 0.95% expense ratio and 0.35% management fee. FQUAX is a Long Short - Equity option. These funds' investment strategy consists of minimizing overall market exposure, while at the same time taking long positions in equities that are expected to appreciate and short positions in equities that are projected to decline. FQUAX, with annual returns of 11.44% over the last five years, is a well-diversified fund with a long track record of success.

JPMorgan US Equity Fund L

(JMUEX Quick QuoteJMUEX - Free Report) : 0.54% expense ratio and 0.4% management fee. JMUEX is part of the Large Cap Blend section, and these mutual funds most often invest in firms with a market capitalization of $10 billion or more. By investing in bigger companies, these funds offer more stability, and are often well-suited for investors with a "buy and hold" mindset. With a five-year annual return of 16.09%, this fund is a well-diversified fund with a long track record of success.

There you have it. If your financial advisor had you put your money into any of our top-ranked funds, then they've got you covered. If not, you may need to talk.