The government supports and values the vital work internal drainage boards (IDBs) undertake in managing water levels and reducing flood risk, benefitting communities, businesses and farmers.

In recognition of IDB cost increases and the impact on local authority special levies, the government announced as part of the Local Government Finance Settlement Policy Statement, that it will provide £5 million in funding for the local authorities most impacted by IDB levies in 2026/27. This follows the £5 million grant awarded in 2025/26. As in previous years, allocations for the 2026/27 IDB levy support grant will be announced in due course once IDB levy data has been received towards the end of the financial year.

We recognise the need to ensure IDBs are set up for the longer term. Defra and MHCLG have commissioned a research project into IDB funding and costs, which launched in early September and will close in summer 2026.