A prospectus for the Commerce Funds containing more complete information may be obtained by calling 1-800-995-6365 or by downloading it from this website. Please consider a Fund's objectives, risks, and charges and expenses, and read the prospectus carefully before investing. The prospectus contains this and other information about the Fund.

The mutual funds referred to in this Web site are offered and sold only to persons residing in the United States and are offered by prospectus only. The prospectus contains more complete information about the funds, including charges and expenses, and should be read carefully before investing.

The method of calculation of the 30-Day Standardized Subsidized Yield is mandated by the Securities and Exchange Commission and is determined by dividing the net investment income per share earned during the last 30 days of the period by the maximum public offering price (“POP”) per share on the last day of the period. This number is then annualized. The 30-Day Standardized Subsidized Yield reflects fee waivers and/or expense reimbursements recorded by the Fund during the period. Without waivers and/or reimbursements, yields would be reduced. This yield does not necessarily reflect income actually earned and distributed by the Fund and, therefore, may not be correlated with the dividends or other distributions paid to shareholders. The 30-Day Standardized Unsubsidized Yield does not adjust for any fee waivers and/ or expense reimbursements in effect. If the Fund does not incur any fee waivers and/or expense reimbursements during the period, the 30-Day Standard Subsidized Yield and 30-Day Standardized Unsubsidized Yield will be identical.