12.1 The Contractor shall prepare an initial Waste Flow and Annual Unitary Charge Forecast and submit it to the Authority no later than [a fixed date before the start of the Contract Year to be agreed between the Parties].
12.2 The Contractor shall update the Waste Flow and Annual Unitary Charge Forecast21 each Contract Month and submit the updated version with the monthly invoice. The updated version should reflect all relevant information available [ ] Business Days before the date of the Monthly Service Report is due for the relevant Contract Month.
12.3 The Contractor shall calculate the final Waste Flow and Annual Unitary Charge no later than [a fixed date to be agreed between the Parties, after the end of the Contract Year], which should reflect the agreed actual figures for the relevant Contract Year. The difference between the final Annual Unitary Charge and the sum of the Monthly Payments for that relevant Contract Year should be added to or subtracted from the next invoice.
12.4 The Monthly Payment shall be calculated in accordance with the following formula:
MPm = AUCF * (m/12) - ∑ MP previously paid in the relevant Contract Year
where:
MP | Monthly Payment for the relevant Contract Month |
AUCF | |
m | Contract Month number in the relevant Contract Year, where [April] is 1, [May] is 2, etc |
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21 Contractual provisions will need to include setting out the basis upon which forecasts are made, including for example, the reasonableness of any assumptions underpinning forecasts. The monthly update should incorporate the previous Contract Month's wasteflows and may incorporate changes to the remaining Contract Months.