IUDn =

IDrD x ∑ ((DUBUx0.7) + (DU)) x UDF x RUR

+

 IDlDx ∑ ((DUBUx0.7) + (DU)) x UDF x RUR

IUDn

Initial Unavailability Deduction for Contract Month (n)

IDrD

Initial Daily Rented Deduction charge

IDlD

Initial Daily Leaseholder Deduction Charge

Dna

The number of Days in the Contract Year (n)

DUBU

The number of days that the Dwelling is Unavailable but Used in Contract Month (n)

DU

The number of days that the Dwelling is Unavailable in Contract Month (n)

UDF

The Unavailability Deduction Factor applied in respect of the relevant Availability Standard which led to the Unavailability.  

RUR

Repeated Unavailability Ratchet

∑

Summation of Dwellings