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Income Tax - Reconciliation of Effective Tax Rate (Details) - ARS ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Reconciliation of average effective tax rate and applicable tax rate [abstract] |  |  |  |  |  |  |
Profit before income tax |  | $ 313,326,162 | $ 172,633,812 | $ 84,786,272 |  |  |
Income tax rate |  | 35.00% | 35.00% | 35.00% |  |  |
Income tax using the Bank's income tax rate |  | $ 109,664,157 | $ 60,421,834 | $ 29,675,195 |  |  |
Permanent Differences [Abstract] |  |  |  |  |  |  |
Tax -exempt income |  | (1,852,963) | (462,590) | (1,724,562) |  |  |
Non-deductible expenses |  | 2,544,273 | 475,794 | 885,305 |  |  |
Change in tax rate |  |  |  | 8,956,828 |  |  |
Other |  | (38,678) | (676,528) | 390,030 |  |  |
Net monetary inflation adjustment |  | 418,462,439 | 189,143,633 | 120,083,431 |  |  |
Sub total |  | 528,779,228 | 248,902,143 | 158,266,227 |  |  |
Inflation adjustment for tax purposes |  | (372,708,898) | (256,481,087) | (124,156,075) |  |  |
Over/under income tax from prior year | [1] |  | (280,159) | (6,075,593) |  |  |
Income tax expense |  | $ 156,070,330 | $ (7,859,103) | $ 28,034,559 | $ 555,002 | $ 647,945 | $ 264,257
Effective tax rate |  | 50.00% | (5.00%) | 33.00% |  |  |
[1] | It includes an income tax charge of 5,908,256 corresponding to the tax inflation mechanism applied for fiscal year 2020 – see note 11.6 “Income tax – inflation adjustment for fiscal year 2020”.

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