There is never a wrong time to invest in mutual funds for retirement. So, if you're still looking for the best mutual funds, the Zacks Mutual Fund Rank can be a great guide.

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.

Hartford Real Asset Y (HRLYX): 0.9% expense ratio and 0.8% management fee. HRLYX is a Global - Equity mutual fund. These funds invest in large markets like the U.S., Europe, and Japan, and operate with very few geographical limitations HRLYX has achieved five-year annual returns of an astounding 9.22%.

American Funds Fundamentl Invs F3 (FUNFX Quick QuoteFUNFX - Free Report) . Expense ratio: 0.28%. Management fee: 0.24%. FUNFX is a Large Cap Blend fund, targeting companies with market caps of over $10 billion. These funds offer investors a stability, and are perfect for people with a "buy and hold" mindset. This fund has managed to produce a robust 15.04% over the last five years.

JPMorgan Large Cap Growth R5 (JLGRX): 0.54% expense ratio and 0.45% management fee. JLGRX 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 a five-year annual return of 13.26%, 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.