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

Fidelity Advisor Stock Select Allocation Cap Institutional (FBRNX Quick QuoteFBRNX - Free Report) has a 0.54% expense ratio and 0.53% management fee. FBRNX 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. With yearly returns of 12.21% over the last five years, this fund clearly wins.

Janus Henderson Glob Research N (JDWNX) is a stand out amongst its peers. JDWNX 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 With five-year annualized performance of 12.62%, expense ratio of 0.75% and management fee of 0.7%, this diversified fund is an attractive buy with a strong history of performance.

Goldman Sachs Intl T/M Eq P (GGCPX). Expense ratio: 0.89%. Management fee: 0.85%. Five year annual return: 13.84%. GGCPX is a Non US - Equity option, focusing their investments acoss emerging and developed markets, and can often extend across cap levels too.

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.