Offtake Agreement What Does Offtake Agreement Mean? An agreement between a producer of a resource and a buyer of a resource to purchase/sell portions of the producer's future production. An offtake agreement is normally negotiated prior to the construction of a facility such as a mine in order to secure a market for the future output of the facility. If lenders can see the company will have a purchaser of its production, it makes it easier to obtain financing to construct a facility.