MJ76

Hello folks, as the title suggests, my partner (and me) are trying to understand her tax bill. The summary is as follows: Due 31 Jan 2025 - £3036.77 (Balancing payment for tax year 2023-2024) Due 31 Jan 2025 - £1428.68 (First payment on account 2024-2025) Due 31 Jul 2025 - £1428.69 (Second payment on account for 2024-2025) I believe she was under the assumption that she would be paying the £3036.77 but why are the other payments due in 2025 if they are for tax year 2024-2025? Thank you! Best regards MJ