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Contractual obligations by year of maturity were outlined in Table 23 on page 113 of BMO's 2012 Annual Report. There have been no material changes to contractual obligations that are outside the ordinary course of our business. Note 19 to the unaudited interim consolidated financial statements provides further details on contractual maturities of assets and liabilities at the end of the quarter.

Capital Management

Q1-2013 Regulatory Capital Review

BMO's Basel III capital position is strong, with a Common Equity Tier 1 (CET1) Ratio of 9.4% at January 31, 2013, well in excess of the Office of the Superintendent of Financial Institutions' (OSFI's) expectation that banks attain a 7% target, as discussed in the following paragraph.

Effective the first quarter of 2013, regulatory capital requirements for BMO are determined on a Basel III basis. In 2013, the minimum required Basel III capital ratios are a 3.5% CET1 Ratio, 4.5% Tier 1 Ratio and 8% Total Capital Ratio, such ratios being calculated using a five year phase-in of regulatory adjustments and nine year phase-out of instruments that no longer qualify as regulatory capital under the Basel III rules. However, OSFI's guidance requires Canadian deposit-taking institutions to meet the 2019 Basel III capital requirements, other than the phase-out of non-qualifying capital (also referred to as the 'all-in' requirements) in 2013 and expects them to attain a target Basel III CET1 Ratio of at least 7% (4.5% minimum plus 2.5% capital conservation buffer) by January 31, 2013.

The CET1 Ratio increased by approximately 75 basis points from our pro-forma ratio at October 31, 2012, due to higher CET1 capital and lower risk-weighted assets (RWA), as described below.

CET1 capital at January 31, 2013, was $19.9 billion, or $0.6 billion higher than the pro-forma CET1 capital of $19.3 billion at October 31, 2012, due mainly to retained earnings growth and the issuance of common shares through the Shareholder Dividend Reinvestment and Share Purchase Plan (DRIP) and the exercise of stock options.

The Basel III RWA of $211 billion at January 31, 2013, was $11 billion lower than the Basel III pro-forma estimate of $222 billion at October 31, 2012, due mainly to lower Credit Valuation Adjustment (CVA) RWA. The lower CVA RWA resulted from OSFI's decision, announced in December 2012, to delay the effective date for the imposition of the CVA risk capital charge until January 2014. The delay is intended to synchronize Canada's implementation of the CVA risk capital charge with Basel III implementation in the United States and European Union countries. This delay improved our CET1 Ratio at January 31, 2013, by approximately 35 basis points.

The bank's Basel III Tier 1 and Total Capital Ratios were 11.1% and 13.4%, respectively, at January 31, 2013, compared with 10.5% and 12.9%, respectively, on a pro-forma basis at October 31, 2012. The ratios improved due to higher CET1 capital and lower RWA, as described above, partly offset by the phase-out of non-common instruments that do not meet OSFI's Basel III requirements, including the non-viability contingent capital requirements, and the $200 million preferred share redemption announced in January 2013.

BMO's transitional Assets-to-Capital Multiple (ACM), a leverage ratio monitored by OSFI, was 16.1 at January 31, 2013. BMO's ACM increased from 15.2 at October 31, 2012, on a Basel II basis primarily due to balance sheet growth and Basel III transitional modifications.