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KBC Belgium BU (4) | Opex & impairments OPERATING EXPENSES in m EUR 821 Bank tax 311 538 520 -6- 558 901 354 614 554 577 fala Operating 509 expenses 532 547 558 578 1Q21 2Q21 3Q21 4Q21 1Q22 2Q22 3Q22 4Q22 ASSET IMPAIRMENT in m EUR Highlights 43 21 7 36 34 29 8 22 7 -21 -17 -15 -8 -58 -25 -20 -66 -42 -169 -43 -65 -56 Other impairments ECL for geopolitical, emerging and Covid risks Impairments on financial assets at AC and FVOCI 1Q21 2Q21 -139 3Q21 4Q21 1Q22 2Q22 3Q22 4Q22 28 of 74 Opex excl. bank tax: +6% q-o-q and +10% y-o-y • • Operating expenses without bank taxes increased by 6% q-o-q due mainly to: o Higher ICT costs 。 Seasonally higher marketing and professional fee expenses partly offset by: Lower facilities costs Operating expenses without bank taxes rose by 10% y-o-y due chiefly to higher staff expenses (due largely to wage indexation, partly offset by less FTEs), higher ICT cost, higher marketing expenses and higher professional fees Cost/income ratio adjusted for specific items: 53% in FY22 (51% in FY21) ■ Loan loss impairment charges of 38m EUR in 4Q22 (compared with 21m EUR in 3Q22). Besides an additional 4m EUR impairment charge for geopolitical and emerging risks, there were loan loss impairment charges mainly in the retail & SME portfolios and corporates in foreign branches. Credit cost ratio amounted to 3 bps in FY22 (-26 bps in FY21) ■ 5m EUR impairment on 'other' (mainly ICT impairments) Impaired loans ratio amounted to 1.9%, 0.9% of which over 90 days past due Profit & Loss Capital & Liquidity Looking forward BU & FY22 view Company profile KBC Strategy Sustainability Asset quality MREL & Funding

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