The buyer pays for the interest from the day funding occurred regardless of when recording occurred. I can only see the seller being responsible for the interest if the seller caused a delay which is typically not the case and even then it would not be automatic. It would require a written agreement between buyer and seller. Escrow cannot just change the closing statement. Absent an agreement in writing, the interest for the buyer's loan is never the responsibility of the seller as the seller is not a party to the loan agreement you have with the bank. Thus, unless there is an agreement between you, the borrower, and the seller, there is no obligation by the seller.