Core TSIs : Contracts : Apportionment calculation
Apportionment calculation
The amount of the financial obligation is calculated through the apportionment calculation method, in case of a 'broken' financial obligation (that is either its amount should change within the period, or the period is not a full period (does not correspond with the payment frequency).
In calculating the apportionment, the amount in the 'broken' period is determined by multiplying the number of days in that period by a day-price.
This day price is based either on the price per year, month or quarter as defined in the Apportionment calculation method field of the contract line.
The apportionment calculation method is selected depending on the payment frequency and quarter type. For calculating apportionment, a day price is determined based on either the price per month or price per year.
In case of English / (Old) Scottish / Irish quarters, the apportionment calculation is based upon a price per quarter or a 3 monthly payment frequency. If you are using one of these quarter types, the Apportionment calculation method can only be Quarter (see Contract line fields).

To calculate apportionment, you must first know if the frequency of rent payment is annual, half yearly, quarterly, monthly, or other.
Apportionment is calculated if any of the following cashflow influencing fields of the contract line has changed or is ended within the period of a financial obligation:
Amount
Discount/Surcharge %
VAT
Payment frequency
Amount per
Payment date offset to next possible closure date (in days)
Payment in advance?
Actual end date (can be changed indirectly by terminating the contract line or ending/renewing the contract (for example, through an option))
If a contract (line) starts before the date of the first payment.
If a contract (line) ends before the end date of the last payment.
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If you are working with English / (Old) Scottish / Irish quarters, it is better to use the Payment date offset to next possible closure date (in days) field instead of the Payment pattern start date field.