The Loan-to-Value margin requirements are determined by lenders and agreed to by borrowers. Terms are clearly outlined in each loan agreement.
75% - 1st margin call warning.
83.33% - Margin call is triggered and the borrower has 48 hours to cure the loan back down to 70%.
90.91% - Accelerated liquidation, with a 5% processing fee, to cure loan back down to 70%.