IPSA has published the salary ranges for 2025-2026 and they can be found here:
London area: https://www.ipsaonline.org.uk/guidance/pay-and-benefits#mps-staff-pay-ranges-2025-26-london-area
Non-London area: https://www.ipsaonline.org.uk/guidance/pay-and-benefits#mps-staff-pay-ranges-2025-26-non-london-area
IPSA has published the salary ranges for 2024-2025 and they can be found here: https://www.ipsaonline.org.uk/guidance/pay-and-benefits
London area: https://www.ipsaonline.org.uk/guidance/pay-and-benefits#mps-staff-pay-ranges-2024-25-london-area
Non-London area: https://www.ipsaonline.org.uk/guidance/pay-and-benefits#mps-staff-pay-ranges-2024-25-non-london-area