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.

How can you tell a good mutual fund from a bad one? It's pretty basic: if the fund is diversified, has low fees, and shows strong performance, it's a keeper. Of course, there's a wide range, but using the Zacks Mutual Fund Rank, we've found three mutual funds that would be great additions to any long-term retirement investors' portfolios.

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

JPMorgan Large Cap Growth R2 (JLGZX Quick QuoteJLGZX - Free Report) : 1.18% expense ratio and 0.45% management fee. JLGZX is a part of the Large Cap Growth mutual fund category, which invest in many large U.S. companies that are expected to grow much faster compared to other large-cap stocks. With annual returns of 14.14% over the last five years, this fund is a winner.

MFS Union Standard Equity Fund C (MUECX Quick QuoteMUECX - Free Report) . Expense ratio: 1.49%. Management fee: 0.4%. MUECX 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. This fund has managed to produce a robust 9.42% over the last five years.

Victory Sycamore Established Value I (VEVIX Quick QuoteVEVIX - Free Report) : 0.58% expense ratio and 0.45% management fee. VEVIX is a Mid Cap Value mutual funds that aims to target medium-sized companies that possess strong value and income opportunities for investors. With a five-year annual return of 9.66%, 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.