Market Sustainability and Improvement Fund 2025 to 2026 15.4.2026 | Her Majesty's Revenue and Customs Sets out the guidance to support local authorities in administering the Market Sustainability and Improvement Fund in 2025 to 2026. This guidance is intended to support local authorities in administering the Market Sustainability and Improvement Fund (MSIF) in 2025 to 2026. It should be read alongside the Market Sustainability and Improvement Fund grant determination 2025 to 2026. The ‘Market Sustainability and Improvement Fund 2025 to 2026: final reporting template’ asks local authorities to provide updated information on each of the metrics collected in the initial 2025 to 2026 report in June 2025. Local authorities will need to complete and return the report to the Department of Health and Social Care by 11:59pm on 20 May 2026. https://www.gov.uk/government/publications/market-sustainability-and-improvement-fund-2025-to-2026