Principal deficiency ledgers

In European RMBS transactions, bonds are not generally written down when losses are incurred in the collateral pool. Instead, the losses are recorded in a principal deficiency ledger, which records the extent to which the balance outstanding on the notes exceeds the remaining assets. Usually, both excess spread and the reserve fund can be used to cover losses and so pay down the principal deficiency ledger. This mechanism is beneficial to holders of the lower-rated notes because the notes do not get written off immediately and any future excess spread will be used to cover the loss. 

An asset performance trigger event would occur if a principal deficiency is recorded in the Class A Principal Deficiency Ledger. This means that the total balance of realised losses that have not been covered by either the reserve fund or with excess spread exceed the aggregate outstanding amount of the subordinate notes. If this occurs, all receipts on the mortgages will be allocated to the issuers and the seller on a pro rata basis. The notes will start to redeem early with all the Class A notes being redeemed on a pro rata basis. When all the Class A notes have been redeemed in full, the Class B notes would be redeemed, and so on for all other classes of notes until all the notes are redeemed or the trust no longer has any assets. 

A principal deficiency being recorded on the Class C or Class B principal deficiency ledger. 

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See also in sourсe #XX -- [ ]

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