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.

Bernstein Intl Strat Eqs SCB (STESX) has a 0.78% expense ratio and 0.66% management fee. STESX is a Non US - Equity option, focusing their investments acoss emerging and developed markets, and can often extend across cap levels too. With yearly returns of 12.86% over the last five years, this fund clearly wins.

AQR Small Cap Multi-Style N (QSMNX) is a stand out amongst its peers. QSMNX is a Small Cap Blend mutual fund, and usually targets stocks with market caps of less than $2 billion, letting investors diversify their funds among other kinds of small-cap equities. With five-year annualized performance of 11.76%, expense ratio of 0.88% and management fee of 0.45%, this diversified fund is an attractive buy with a strong history of performance.

Goldman Sachs Large Cap Growth Insights IR (GLCTX Quick QuoteGLCTX - Free Report) is an attractive large-cap allocation. GLCTX 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. GLCTX has an expense ratio of 0.66%, management fee of 0.5%, and annual returns of 11.74% 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.