Morningstar of Chicago, has posted a calculator on its web site to help investors determine the different returns that various share classes can produce, due to varying sales charges and expenses. The calculator is located at It shows results for a fund's various shares over a 25-year period.

"Finally, investors can see what they've suspected for a while - share classes make a difference in returns," said Carolyn Messite, product manager for Morningstar's web site.

Subscribe Now

Access to premium content including in-depth coverage of mutual funds, hedge funds, 401(K)s, 529 plans, and more.

3-Week Free Trial

Insight and analysis into the management, marketing, operations and technology of the asset management industry.