Exhibit 99.1 Intercorp Financial Services Inc. Third Quarter 2023 Earnings Lima, Peru, November 8, 2023. Intercorp Financial Services Inc. (Lima Stock Exchange/NYSE: IFS) announced today its unaudited results for the third quarter 2023. These results are reported on a consolidated basis under IFRS in nominal Peruvian soles. Intercorp Financial Services: 3Q23 earnings of S/ 195.2 mm impacted by CoR and investment results • Total revenues grew 3.8% QoQ, banking NIM stable at 5.6% • Deceleration in fees due to ...