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 Royal Borough of Windsor and Maidenhead.
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 Royal Borough of Windsor and Maidenhead 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 Royal Borough of Windsor and Maidenhead 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 Zones Map
The council's CIL charging zones map can be found at: http://mot.rbwm.gov.uk/mot/inc/?p=cil
Paying CIL in Instalments
The Royal Borough of Windsor and Maidenhead has a CIL Instalments policy in place and CIL charges will be payable in accordance with this policy.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is less than £49,999.99 the whole amount will be payable within 60 days of the commencement of the development.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £50,000.00 or more, but less than 149,999.00, the amount will be payable in two instalments of 25% at 60 days and 75% at 120 days.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £150,000.00 or more, but less than 499,999.00, the amount will be payable in three instalments of 25% at 60 days, 25% at 120 days and 50% at 180 days.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £500,000.00 or more, but less than 999,999.00, the amount will be payable in four instalments of 25% at 60 days, 25% at 180 days, 25% at 240 days, and 25% at 360 days.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £1,000,000.00 or more the amount will be payable in four instalments of 25% at 90 days, 25% at 180 days, 25% at 450 days and 25% at 720 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 National Planning Practice Guidance website at: https://www.gov.uk/guidance/community-infrastructure-levy#relief-and-exemptions
Or on the Royal Borough of Windsor and Maidenhead at: https://www.rbwm.gov.uk/home/planning-and-building-control/planning-policy/community-infrastructure-levy
Final CIL Liability
Formal determination of the CIL liability will be made by The Royal Borough of Windsor and Maidenhead 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 Royal Borough of Windsor and Maidenhead website, all the CIL forms are available on the Planning Portal website at https://www.planningportal.co.uk/info/200126/applications/70/community_infrastructure_levy
Guidance on the Community Infrastructure Levy can be found on the Planning Practice Guidance 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@rbwm.gov.uk.
Charging Zones Map
The council's CIL charging zones map can be found at: http://mot.rbwm.gov.uk/mot/inc/?p=cil
Paying CIL in Instalments
The Royal Borough of Windsor and Maidenhead has a CIL Instalments policy in place and CIL charges will be payable in accordance with this policy.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is less than £49,999.99 the whole amount will be payable within 60 days of the commencement of the development.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £50,000.00 or more, but less than 149,999.00, the amount will be payable in two instalments of 25% at 60 days and 75% at 120 days.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £150,000.00 or more, but less than 499,999.00, the amount will be payable in three instalments of 25% at 60 days, 25% at 120 days and 50% at 180 days.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £500,000.00 or more, but less than 999,999.00, the amount will be payable in four instalments of 25% at 60 days, 25% at 180 days, 25% at 240 days, and 25% at 360 days.
- Where a Royal Borough of Windsor and Maidenhead CIL charge is £1,000,000.00 or more the amount will be payable in four instalments of 25% at 90 days, 25% at 180 days, 25% at 450 days and 25% at 720 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 National Planning Practice Guidance website at: https://www.gov.uk/guidance/community-infrastructure-levy#relief-and-exemptions
Or on the Royal Borough of Windsor and Maidenhead at: https://www.rbwm.gov.uk/home/planning-and-building-control/planning-policy/community-infrastructure-levy
Final CIL Liability
Formal determination of the CIL liability will be made by The Royal Borough of Windsor and Maidenhead 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 Royal Borough of Windsor and Maidenhead website, all the CIL forms are available on the Planning Portal website at https://www.planningportal.co.uk/info/200126/applications/70/community_infrastructure_levy
Guidance on the Community Infrastructure Levy can be found on the Planning Practice Guidance 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@rbwm.gov.uk.