Investing in mutual funds for retirement is never too late. And the Zacks Mutual Fund Rank can be an excellent tool for investors looking to invest in the best funds.

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.

Hartford Schroder Intl Multi Val A (SIDVX): 1.09% expense ratio and 0.7% management fee. SIDVX is a Non US - Equity option, focusing their investments acoss emerging and developed markets, and can often extend across cap levels too. SIDVX has achieved five-year annual returns of an astounding 13.56%.

Neuberger Berman Social Responsible Trust (NBSTX) is a stand out amongst its peers. NBSTX is a Large Cap Value fund. These funds invest in stocks with a market cap of $10 billion of more, but whose share prices do not reflect their intrinsic value. With five-year annualized performance of 13.28%, expense ratio of 1.02% and management fee of 0.89%, this diversified fund is an attractive buy with a strong history of performance.

American Funds Investor Company of America 529A (CICAX Quick QuoteCICAX - Free Report) . Expense ratio: 0.58%. Management fee: 0.23%. Five year annual return: 13.71%. CICAX 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.

These examples highlight the fact that there are some astonishingly good mutual funds out there. If your advisor has you in the good ones, bravo! If not, you may need to have a talk.