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 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 take a look at some of our top-ranked mutual funds with the lowest fees.

DFA US Sustainability Core I (DFSIX Quick QuoteDFSIX - Free Report) : 0.17% expense ratio and 0.14% management fee. DFSIX 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. DFSIX has achieved five-year annual returns of an astounding 14.75%.

Pioneer Global Equity A (GLOSX Quick QuoteGLOSX - Free Report) . Expense ratio: 1.09%. Management fee: 0.65%. GLOSX 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. This fund has managed to produce a robust 13.15% over the last five years.

Janus Henderson Contrarian D (JACNX Quick QuoteJACNX - Free Report) : 0.64% expense ratio and 0.6% management fee. JACNX 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 a five-year annual return of 12.05%, 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.