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Regulatory Restrictions (Tables) | 12 Months Ended
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Dec. 31, 2020
Compliance With Regulatory Capital Requirements Under Banking Regulations [Abstract] |
Schedule of Capital Ratios | The following table summarizes capital ratios for Old National and Old National Bank:
| Actual |  | Fully Phased-In Regulatory Guidelines Minimum (1) |  | Prompt Corrective Action “Well Capitalized” Guidelines
(dollars in thousands) | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |
Total capital to risk-weighted assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | $ | 1,949,757 |  |  | 12.69 | % |  | $ | 1,613,753 |  |  | 10.50 | % |  | N/A |  | N/A %
Old National Bank | 1,973,180 |  |  | 12.90 |  |  | 1,606,657 |  |  | 10.50 |  |  | 1,530,149 |  |  | 10.00 |
Common equity Tier 1 capital to risk-weighted assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | 1,805,194 |  |  | 11.75 |  |  | 1,075,835 |  |  | 7.00 |  |  | N/A |  | N/A
Old National Bank | 1,870,617 |  |  | 12.23 |  |  | 1,071,104 |  |  | 7.00 |  |  | 994,597 |  |  | 6.50 |
Tier 1 capital to risk-weighted assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | 1,805,194 |  |  | 11.75 |  |  | 1,306,371 |  |  | 8.50 |  |  | N/A |  | N/A
Old National Bank | 1,870,617 |  |  | 12.23 |  |  | 1,300,627 |  |  | 8.50 |  |  | 1,224,119 |  |  | 8.00 |
Tier 1 capital to average assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | 1,805,194 |  |  | 8.20 |  |  | 880,845 |  |  | 4.00 |  |  | N/A |  | N/A
Old National Bank | 1,870,617 |  |  | 8.67 |  |  | 863,087 |  |  | 4.00 |  |  | 1,078,859 |  |  | 5.00 |
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |
Total capital to risk-weighted assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | $ | 1,828,312 |  |  | 12.99 | % |  | $ | 1,477,763 |  |  | 10.50 | % |  | N/A |  | N/A %
Old National Bank | 1,891,612 |  |  | 13.50 |  |  | 1,471,122 |  |  | 10.50 |  |  | 1,401,069 |  |  | 10.00 |
Common equity Tier 1 capital to risk-weighted assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | 1,706,727 |  |  | 12.13 |  |  | 985,175 |  |  | 7.00 |  |  | N/A |  | N/A
Old National Bank | 1,822,337 |  |  | 13.01 |  |  | 980,748 |  |  | 7.00 |  |  | 910,695 |  |  | 6.50 |
Tier 1 capital to risk-weighted assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | 1,706,727 |  |  | 12.13 |  |  | 1,196,284 |  |  | 8.50 |  |  | N/A |  | N/A
Old National Bank | 1,822,737 |  |  | 13.01 |  |  | 1,190,909 |  |  | 8.50 |  |  | 1,120,855 |  |  | 8.00 |
Tier 1 capital to average assets |  |  |  |  |  |  |  |  |  |  |
Old National Bancorp | 1,706,727 |  |  | 8.88 |  |  | 768,537 |  |  | 4.00 |  |  | N/A |  | N/A
Old National Bank | 1,822,737 |  |  | 9.62 |  |  | 757,783 |  |  | 4.00 |  |  | 947,228 |  |  | 5.00 |
(1)As of January 1, 2019, Basel III Capital Rules required banking organizations to maintain: a minimum ratio of common equity Tier 1 to risk-weighted assets of at least 4.5%, plus a 2.5% “capital conservation buffer”; a minimum ratio of Tier 1 capital to risk-weighted assets of at least 6.0%, plus the 2.5% capital conservation buffer; a minimum ratio of total capital to risk-weighted assets of at least 8.0%, plus the 2.5% capital conservation buffer; and a minimum ratio of Tier 1 capital to adjusted average consolidated assets of at least 4.0%.

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