The main thing to know is whether the buyer abandoned the contract during their due diligence phase or after the end of the due diligence phase QUESTION: If you have a binding contractual agreement date, who inserts that date? What is the difference between the “Acceptance Date” and the “Binding Contract Date” in the RBM form contracts? The date of acceptance is the date on which the party on whom an offer or counter-offer was submitted signs and accepts it. However, a legally valid contract will only be returned to the party that made the offer or counter-offer when the accepted contract occurs. .