No, an estimate is not the same as an invoice. An estimate is a document that provides a projected cost of a product or service before it is provided to the customer. It is essentially a rough calculation or approximation of the total expenses involved. On the other hand, an invoice is a document sent to the customer after the product or service has been provided, requesting payment for the agreed-upon amount. An invoice includes specific details such as the quantity, description, and cost of the goods or services provided, along with any applicable taxes or discounts. While an estimate is just an initial cost estimate, an invoice is a formal request for payment based on the actual goods or services delivered.