In calculating the eligible capital, it will be necessary first to calculate the bank's minimum capital requirement for credit risk, and only afterwards its market risk requirement, to establish how much tier 1 and tier 2 capital is available to support market risk. Eligible capital will be the sum of the whole of the bank's tier 1 capital, plus tier 2 capital under the limits set out in Section CA-2.3 above. Tier 3 capital will be regarded as eligible only if it can be used to support market risks under the conditions set out in Section CA-2.2 and CA-2.3 above. The quoted capital ratio will thus represent capital that is available to meet both credit risk and market risk. Where a bank has tier 3 capital, which meets the conditions set out in Section CA-2.2 above and which is not at present supporting market risks, it may report that excess as unused but eligible tier 3 capital alongside its capital ratio. A worked example of the calculation of the capital ratio is set out in Appendix CA-1.