Maryland has very few laws that allow a person to cancel an accepted contract. The one notable exception is the Door-to-Door Sales Act.Under Maryland law, it is illegal for an employer to make a "negligent misrepresentation" to a potential employee. Your offer can be withdrawn anytime before they accept it in writing (it's not a deal for real estate until all parties have signed). It is possible for a buyer to back out of a signed real estate contract with a seller, but there may be serious consequences. Basic contract law generally provides that an offer may be withdrawn or "revoked" at any time prior to acceptance.