write-off would be the correct way i guess.

like this.

British
a vehicle or other object that is too badly damaged to be repaired.
“the passengers were unharmed, but my car was a total write-off”

a worthless or ineffectual person or thing.
“the magazine was a write-off, its credibility rating below zero”

Finance
a cancellation from an account of a bad debt or worthless asset.
“their profits are weakening thanks to loan write-offs”