Earnest monies, also known as earnest money deposits or earnest deposits, refer to the upfront payment made by a buyer to a seller to show their good faith and seriousness about purchasing a property or asset. Synonyms for the term may include good-faith deposit, down payment, initial payment, security deposit, or deposit money. The purpose of earnest monies is to provide a level of assurance to the seller that the buyer is committed to completing the transaction. This payment is typically held in an escrow account until the transaction is completed, at which point it is either credited towards the purchase price or returned to the buyer.