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 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.

Let's break down some of the mutual funds with the top Zacks Mutual Fund Rank and the lowest fees.

Vanguard Growth & Income Admiral (VGIAX Quick QuoteVGIAX - Free Report) : 0.22% expense ratio and 0.21% management fee. VGIAX 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. VGIAX has achieved five-year annual returns of an astounding 10.89%.

Pioneer Fundamental Growth Y (FUNYX Quick QuoteFUNYX - Free Report) : 0.75% expense ratio and 0.61% management fee. FUNYX 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 12.55% over the last five years, FUNYX is an effectively diversified fund with a long reputation of solidly positive performance.

Janus Henderson Global Life Science I (JFNIX Quick QuoteJFNIX - Free Report) is an attractive large-cap allocation. JFNIX is part of the Sector - Health category, offering investors a focus on the healthcare industry, one of the largest sectors in the American economy. JFNIX has an expense ratio of 0.76%, management fee of 0.64%, and annual returns of 10.91% over the past five years.

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.