The UK has a legal commitment to spend 0.7% of its gross national income (GNI) each year on Official Development Assistance (ODA). Given the expected fall in GNI this year, commitments of aid spending are being reviewed across all departments. HM Treasury allocates ODA budgets to departments and is responsible for decisions on changes to these. Departments are responsible for assessing and assuring the impact and value for money of their ODA programmes on an ongoing basis in line with Managing Public Money. HM Treasury take evidence-based spending decisions and ensure departments maintain high standards of programme delivery that are consistent with HMG best practice.