Definition: A legal instrument implemented by a mortgagor detailing the exact unpaid balance of a mortgage, the current rate of interest and the date to which interest has been paid. It bars the signer from making a claim inconsistent with the instrument.
Pronunciation: \e-ˈstä-pəl\ \(ˌ)sər-ˈti-fi-kət\
Used in a Sentence: When the bank sold off the mortgage, the purchaser was issued an estoppel certificate outlining the exact terms of the loan.