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.

If you are looking to diversify your portfolio, consider Goldman Sachs SmCap Eq Insights P (GMAPX Quick QuoteGMAPX - Free Report) . GMAPX is a Small Cap Blend mutual fund, allowing investors a way to diversify their funds among various types of small-cap stocks. This fund is a winner, boasting an expense ratio of 0.83%, management fee of 0.8%, and a five-year annualized return track record of 10.79%.

F/m Invests Large Cap Focused Inv (IAFMX): 1.07% expense ratio and 0.7% management fee. IAFMX is a Large Cap Growth mutual fund, and these funds invest in many large U.S. firms that are projected to grow at a faster rate than their large-cap peers. With yearly returns of 17.4% over the last five years, IAFMX is an effectively diversified fund with a long reputation of solidly positive performance.

JHancock Global Shr/Hlder Yld A (JGYAX): 1.09% expense ratio and 0.8% management fee. JGYAX is a Global - Equity mutual fund, which invests their assets in large markets, leveraging the global economy. With a five-year annual return of 12.91%, 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.