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 best way to shortlist great mutual funds is to ensure solid performance, diversification, and low fees. Some are better than others, but utilizing the Zacks Mutual Fund Rank, we have identified three mutual funds that could be solid additions to one's retirement portfolio.

Here are the funds that have achieved the Zacks Mutual Fund Rank #1 (Strong Buy) and have low fees.

If you are looking to diversify your portfolio, consider Carillon Clarivest Capital Appr I (HRCIX). HRCIX is a Large Cap Growth option; these mutual funds purchase stakes in numerous large U.S. companies that are expected to develop and grow at a faster rate than other large-cap stocks. This fund is a winner, boasting an expense ratio of 0.72%, management fee of 0.5%, and a five-year annualized return track record of 14.18%.

American Century Global Gold R (AGGWX Quick QuoteAGGWX - Free Report) : 1.16% expense ratio and 0.65% management fee. AGGWX is a Sector - Precious Metal mutual fund, typically investing in companies that are involved in the mining and production of precious metals like gold, silver, platinum, and palladium. AGGWX, with annual returns of 23.4% over the last five years, is a well-diversified fund with a long track record of success.

AQR Global Equity Fund R6 (AQGRX) is an attractive large-cap allocation. AQGRX is a Global - Equity mutual fund, which invests their assets in large markets, leveraging the global economy. AQGRX has an expense ratio of 0.73%, management fee of 0.6%, and annual returns of 13.04% over the past five years.

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.