HY23 Interim Results Announcement

Return on Tangible Equity (ROTE) HY23: Headline vs. Adjusted Adjustments H1 2023 Headline (€m) & valuation items, Additional gains net of tax Adjusted for CET1 ratio at 14.0% Pension Surplus Profit for the period 853 Coupon on Additional Tier 1 securities Preference share dividends (34) (4) Adjusted profit after tax 815 (42) Annualised profit after tax 1,649 (84) At June 2023 Shareholders' equity 11,090 Intangible assets (1,350) Shareholders' tangible equity 9,740 Average shareholders' tangible equity 9,672 Return on tangible equity (ROTE) 17.0% H1 2023 adjusted return on tangible equity is adjusted for: - Additional gains and valuation items, net of tax (€42m) Average shareholders' tangible equity calculated on a CET1 Ratio at 14.0% (€365m) Removal of average pension surplus €850m Bank of Ireland H1 2023 Adjusted (€m) 773 1,565 (397) (891) 9,802 (1,350) (397) (891) 8,452 (365) (850) 8,457 18.5% • Tangible Net Asset Value (TNAV) per share as at end Jun 2023 was €9.24, or €8.40 excluding the pension surplus 46

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