CIL Calculator
Terms of Service
This calculator will give you an indication of the CIL charge payable on a chargeable development, given the parameters you supply. The calculator is based on the formula set out in Schedule 1 of the CIL Regulations 2010 (as amended, 2019), and the CIL rates set by the London Borough of Hounslow.
It is not intended as a final representation of your total liability, and does not constitute legal advice. You should not rely on the calculator when making decisions which depend on the CIL charge amount. Formal determination of the CIL liability will be made by the London Borough of Hounslow when a Liability Notice is issued after a CIL liable application is approved.
It is not intended as a final representation of your total liability, and does not constitute legal advice. You should not rely on the calculator when making decisions which depend on the CIL charge amount. Formal determination of the CIL liability will be made by the London Borough of Hounslow when a Liability Notice is issued after a CIL liable application is approved.
Site Details
Decision Date
Site Demolition
sqm
Uses
| Rate (Schedule) | Proposed | Retained | Liable | Total Relief | Total Charge | Actions |
|---|
Clear Table
Add Use
Site Totals
Breakdown
Output to PDF
Instructions and further info
Set a Decision Date and any applicable Site Demolition, then click 'Add Use' to begin your CIL Calculation. Below this table is a Site Totals overview along with an optional Breakdown which explains the calculator's output in detail.
Charging Schedule
The council's charging schedule can be found at: https://pfm.exacom.co.uk/hounslow/Hounslow Schedule.pdf
Paying CIL in Instalments
The London Borough of Hounslow has a CIL Instalments policy in place and CIL charges will be payable in accordance with this policy. Where a London Borough of Hounslow charge is £500,000 or less, the whole amount will be payable within 60 days of the commencement of the development.
Where a London Borough of Hounslow CIL charge is £500,001 or more, the amount will be payable in two instalments of the greater of £500,000 or half the value of the total amount within 60 days, and the remainder within 240 days.
The payment of CIL in instalments should be taken into account in any viability assessments, as this will assist with cash flow.
Phased Development
In cases where a development which has been permitted in phases, each phase is treated as separate development for the purposes of CIL, and each phase should be entered into a separate calculator. The phasing of payments should be taken into account in any viability assessments, as this will assist with cash flow.
Relief and Exemption from CIL
If the development is not eligible for social housing relief, there are other reliefs and exemptions that may apply.
Further information on relief and exemption from CIL can be found on the GOV.UK website at: https://www.gov.uk/guidance/community-infrastructure-levy#relief-and-exemptions or on the London Borough of Hounslow at: https://www.hounslow.gov.uk/info/20010/planning_and_building/1094/community_infrastructure_levy/1
Final CIL Liability
Formal determination of the CIL liability will be made by The London Borough of Hounslow when a Liability Notice is issued after a CIL liable application is approved. Please note that the CIL charges produced by the calculator may be subject to change and may differ to the final calculation of CIL liability.
The final calculation of the CIL chargeable amount will be based on the final gross internal area (GIA) floorspace figures proposed as part of the approved development, and will depend on the following:
- Is the floorspace of existing buildings to be demolished or retained eligible for deduction from the CIL chargeable amount?
- Is the development eligible for relief or exemption from CIL?
- Has indexation been applied?
- Have any surcharges or late payment interest been applied?
Further Information
Further information and guidance is available on The London Borough of Hounslow website, all the CIL forms are available on the Planning Portal website.
Guidance on the Community Infrastructure Levy can be found on the GOV.UK website at: https://www.gov.uk/guidance/community-infrastructure-levy.
For further information or advice on CIL please contact the Planning Admin Team at cil@hounslow.gov.uk.
Charging Schedule
The council's charging schedule can be found at: https://pfm.exacom.co.uk/hounslow/Hounslow Schedule.pdf
Paying CIL in Instalments
The London Borough of Hounslow has a CIL Instalments policy in place and CIL charges will be payable in accordance with this policy. Where a London Borough of Hounslow charge is £500,000 or less, the whole amount will be payable within 60 days of the commencement of the development.
Where a London Borough of Hounslow CIL charge is £500,001 or more, the amount will be payable in two instalments of the greater of £500,000 or half the value of the total amount within 60 days, and the remainder within 240 days.
The payment of CIL in instalments should be taken into account in any viability assessments, as this will assist with cash flow.
Phased Development
In cases where a development which has been permitted in phases, each phase is treated as separate development for the purposes of CIL, and each phase should be entered into a separate calculator. The phasing of payments should be taken into account in any viability assessments, as this will assist with cash flow.
Relief and Exemption from CIL
If the development is not eligible for social housing relief, there are other reliefs and exemptions that may apply.
Further information on relief and exemption from CIL can be found on the GOV.UK website at: https://www.gov.uk/guidance/community-infrastructure-levy#relief-and-exemptions or on the London Borough of Hounslow at: https://www.hounslow.gov.uk/info/20010/planning_and_building/1094/community_infrastructure_levy/1
Final CIL Liability
Formal determination of the CIL liability will be made by The London Borough of Hounslow when a Liability Notice is issued after a CIL liable application is approved. Please note that the CIL charges produced by the calculator may be subject to change and may differ to the final calculation of CIL liability.
The final calculation of the CIL chargeable amount will be based on the final gross internal area (GIA) floorspace figures proposed as part of the approved development, and will depend on the following:
- Is the floorspace of existing buildings to be demolished or retained eligible for deduction from the CIL chargeable amount?
- Is the development eligible for relief or exemption from CIL?
- Has indexation been applied?
- Have any surcharges or late payment interest been applied?
Further Information
Further information and guidance is available on The London Borough of Hounslow website, all the CIL forms are available on the Planning Portal website.
Guidance on the Community Infrastructure Levy can be found on the GOV.UK website at: https://www.gov.uk/guidance/community-infrastructure-levy.
For further information or advice on CIL please contact the Planning Admin Team at cil@hounslow.gov.uk.