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Community Infrastructure Levy

The Community Infrastructure Levy (CIL) is a charge on development to help fund infrastructure such as transport schemes and schools which the council, local community and neighbourhoods require to help accommodate new growth from development. 

Westminster CIL

Westminster City Council implemented its CIL charge on 1 May 2016.

View details of the Westminster CIL charges that apply to developments in Westminster

Mayor of London's CIL

The Mayor of London adopted a CIL charge on 1 April 2012, however, the Mayor has adopted the new Mayoral Community Infrastructure Levy (MCIL2) Charging Schedule which came into effect on Monday 1 April 2019.

The details of the MCIL1 and MCIL2 charge across London are published on the Mayoral CIL.

CIL is index-linked to the Building Cost Information Service (BCIS) All in Tender Price Index.

For all CIL enquiries please email

Community Infrastructure Levy (Coronavirus) (Amendment) (England) Regulations 2020

Temporary deferral of CIL payment and S106 contributions

The Government has published guidance (Coronavirus (COVID-19): Community Infrastructure Levy guidance) on the regulations giving collecting authorities the discretion to grant deferral requests for CIL and S106 payments. This guidance explains the operation of these regulations which were laid on 30 June 2020.

The temporary regulations came into effect on Wednesday 22 July 2020 and will expire on 31 July 2021. They apply to development schemes which commence between the start of lockdown and the regulations’ expiry date - 21 March 2020 and 31 July 2021 respectively.

Section 72A of the regulations set a maximum business turnover threshold of £45m with other criteria to be met by an applicant who wishes to make a request for a deferral.

Under these regulations, Westminster City Council will, at its discretion, consider and determine all requests made for deferral of payment of the levy and section 106 contributions based on the individual merits of each case, with a minimum requirement of meeting all the criteria under Section 72A (1).

The payment procedure applies for both the Mayoral CIL and Westminster CIL.

Read the updated CIL payment regulations.

Read the updated CIL payment deferral guidance.

CIL payment process

CIL liable developments

Developments that create new-build floorspace with a gross internal floorspace (GIA) of 100 square metres or more would be liable to pay both the Mayor’s and Westminster’s CIL. A development involving the creation of a dwelling and new-build floorspace of any size would also be liable to pay both CILs.

Planning permissions for this type of development, including those subject to planning appeals, or enforcement appeals and permitted development, could potentially be liable to pay CIL. Developments granted permission through a general permitted development order may also be liable to pay CIL.

CIL calculations

The CIL Regulations 2010 (as amended) contain the formulas used to calculate the applicable CIL charges for each development that is deemed to be liable.

Forms required

Developers must provide sufficient information to allow the council to determine whether the development is liable to pay CIL and to calculate the charges accurately from the floor areas provided. 

All CIL forms are available from the planning portal.

  • the CIL additional information form gives details about existing and proposed floorspace values and the lawful use test and must be submitted with a planning application
  • the assumption of CIL liability form names the party that will be liable to pay the CIL charges and should be submitted with the planning application -  the assumption of liability can be transferred to another party or withdrawn at a later date and so should not be withheld where land ownership is likely to change
  • certain development types can apply for relief from the payment of CIL. For more information have a look at the development types that are eligible for relief. All reliefs must be applied for to the council and any decision by them on eligibility for relief must be received before commencement of a development. Applications should therefore be made as early as possible in the process.  

The CIL legislation requires that the above processes must be followed by the applicant or liable party and there are penalties for not doing so. CIL liability must be registered as a land charge and on undertaking the above steps the council will be able to issue a liability notice which will set out the amount of CIL that will be required if the planning permission is implemented. Remember, payment of CIL only becomes due if a planning permission is implemented.

Before a development starts

  • the person who has assumed liability to pay the CIL must submit a commencement notice confirming the start date to the council before the work commences
  • a developer must submit the notice of chargeable development if the applicable development would arise from a general consent, including permitted development as governed by the general permitted development order

The council will then send a demand notice detailing how to pay and the timeframes in which to make the payments. 

Collection, monitoring and enforcement of CIL

The CIL payment process is set out in legislation and must be followed. Financial penalties may be applied for failure to do so.  

If a development is liable for the CIL and is commenced, payment is mandatory. There are strong enforcement powers and penalties for failure to pay, including stop notices, surcharges, late payment interest and prison terms.

Last updated: 17 August 2020