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, most reliable way to judge a mutual fund's quality over time is by analyzing its performance, diversification, and fees. The Zacks Mutual Fund Rank, which covers over 19,000 mutual funds, has helped us identify three outstanding options that are perfect for any long-term investors' portfolios that is retirement-focused.

Let's learn about some of Zacks' highest ranked mutual funds with low fees you may want to consider.

Alger Growth & Income I-2 (AIGOX Quick QuoteAIGOX - Free Report) : 0.76% expense ratio and 0.5% management fee. AIGOX 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. With annual returns of 15.55% over the last five years, this fund is a winner.

Invesco Technology Fund R5 (FTPIX): 0.72% expense ratio and 0.6% management fee. FTPIX is a Sector - Tech mutual fund, allowing investors to own a stake in a notoriously volatile sector with a much more diversified approach. FTPIX, with annual returns of 17.09% over the last five years, is a well-diversified fund with a long track record of success.

American Funds Wash Mutl Invs R2E (RWEBX) is an attractive large-cap allocation. RWEBX is a part of the Large Cap Value category, and invests in equities with a market capitalization of $10 billion or more, but whose share prices do not reflect their intrinsic value. RWEBX has an expense ratio of 1.06%, management fee of 0.22%, and annual returns of 11.29% 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.