Principal Protection Guaranteed Return Total Return Potential Term 100% 2.8% up to 12.80% 2 years for the Term* for the Term* (1.400% annually) (annual potential of 6.400%)

May 2008 - Series 18 Product Overview Product Information A shorter term investment with a minimum guaranteed rate Bank of Montreal Mortgage Issuer: paid at the end of the term and the potential to earn additional Corporation (BMMC) returns, depending on the performance of a diversified portfolio of 10 blue-chip company stocks. Total return is paid Minimum investment: $1,000 at maturity. Term: 2 yrs, consisting of 2 periods Guaranteed return: 2.8% for the term Additional return per 0% - 5% period: Rate of return for the 2.80% - 12.80% term: Available: May 1 - 31, 2008 Issue date: June 9, 2008 Maturity date: June 9, 2010

Key Benefits Additional Features Security and peace of mind Guaranteed by Bank of Montreal Enhanced return potential BMMC is a member of the Canada Deposit Diversification and investment risk management Insurance Corporation. RSP eligible Reference Composition Reference Portfolio Company % of Portfolio Power Corporation of Canada (POW) 10% Barrick Gold Corp. (ABX) 10% Encana Corp. (ECA) 10% Thomson Reuters (TRI) 10% Fortis Inc. (FTS) 10% Toronto-Dominion Bank (The) (TD) 10% Husky Energy Inc. (HSE) 10%

Contact Us Canadian Pacific Railway Ltd. (CP) 10% Visit your local BMO Bank of Montreal® branch and Yellow Pages Income Fund (YLO.UN) 10% speak to an investment professional Tim Hortons Inc. (THI) 10% Call BMO Bank of Montreal Direct Banking at 1 877 CALL BMO (1 877 225-5266) Visit us online at bmo.com/progressivegic

BMO Return Enhancing GICs are issued by Bank of Montreal Mortgage Corporation and unconditionally guaranteed by Bank of Montreal. The principal amount of a BMO Return Enhancing GIC is guaranteed and is repaid upon maturity. While the BMO Return Enhancing GIC provides a minimum guaranteed rate, there is no guarantee that you will receive any additional return based on the performance of the linked securities. Changes in the underlying securities to which the performance of the GIC is linked may affect the rate of return of the GIC. The additional rate of return of the BMO Return Enhancing GIC, if any, is limited by a cap on the additional rate of return. The Terms and Conditions for BMO Return Enhancing GICs are available at your local BMO Bank of Montreal branch.

BMO Progressive GICs are not available in RSPs if the investment's maturity date is after the date a client is required to convert the RSP to a RRIF. ™®Trade-marks of Bank of Montreal. *Not per year