Simple Loss Coverage
Definition
Simple loss coverage is a shorthand ratio that compares available protection, such as overcollateralization or reserves, to a reference loss rate. It answers how many times historical or expected losses the structure can withstand before investor principal is exposed.
Why it matters
The ratio turns abstract credit enhancement into an underwriting question. A 3.2x simple loss coverage metric means the disclosed cushion is roughly 3.2 times the reference loss rate. It is useful for screening, but it is not a full stress test.
Common misconceptions
- •It is not a rating and not a probability of default.
- •It can overstate safety if historical losses are unusually low.
- •It ignores timing, correlation, concentration, and recovery lag unless those are separately modeled.
Technical details
Basic interpretation
Simple loss coverage = structural protection percentage / reference loss percentage.
Example: 27.5% overcollateralization divided by 8.6% trailing default/loss proxy = about 3.2x.
Use it as a starting point, then test downside cases where losses double, recoveries fall, or payments cluster.