Rental Downcost - Calculations

When applying a partial credit to a rental line the following calculations occur depending on the original duration and the partial credit duration:

Note:  If the rental line has a quantity greater than 1, the downcosting amount is divided by the quantity before any of the following calculations occur.

Original Duration Partial Credit Downcost Reverse Amount
1 Month 1 Week

25% of the downcost amount on the original invoice is reversed.

1 week = 25% of 1 month

1 Month 1 Day

5% of the downcost amount of the original invoice is reversed.

1 Day = 5% of 1 month

1 Week 1 Day

20% of the downcost amount of the original invoice is reversed.

1 Day = 20% of 1 week

Note:  None of the calculations above are applied when crediting back the full duration (original duration) on a rental line.

Note:  Downcosting amounts are not calculated for hourly durations.

Revision: 2026.01