The Community Infrastructure Levy (CIL) is a planning charge, introduced by the Planning Act 2008 as a tool for local authorities in England and Wales to help deliver infrastructure to support the development of their area. It came into force on 6 April 2010 through the Community Infrastructure Levy Regulations 2010. Development may be liable for a charge under the CIL if your local planning authority has chosen to set a charge in its area.
Detailed CIL guidance is available from the Ministry for Housing, Communities and Local Government on the Gov.uk website.