Which key document outlines the responsibilities between a buyer and a seller?

The purchase agreement serves as a critical document that outlines the responsibilities and obligations of both the buyer and the seller in a transaction. It details important aspects such as the terms of sale, payment methods, contingencies, and closing timelines. Essentially, the purchase agreement acts as a legally binding contract that ensures both parties are clearly aware of their commitments, thus minimizing misunderstandings and disputes.

While the deposit receipt acknowledges the buyer's earnest money deposit and the sales contract can also suggest some responsibilities, these documents do not usually cover the full extent of obligations as comprehensively as the purchase agreement does. The title transfer is focused primarily on the transfer of ownership rather than the broader relationship and obligations outlined in the transaction process. Therefore, the purchase agreement is the most comprehensive document in terms of detailing the roles and responsibilities of both the buyer and the seller.