Damages for delay measured by interest; no need of proof; attorney fees ACTIVE

When the object of the performance is a sum of money, damages for delay in performance are measured by the interest on that sum from the time it is due, at the rate agreed by the parties or, in the absence of agreement, at the rate of legal interest as fixed by R.S. 9:3500. The obligee may recover these damages without having to prove any loss, and whatever loss he may have suffered he can recover no more. If the parties, by written contract, have expressly agreed that the obligor shall also be liable for the obligee's attorney fees in a fixed or determinable amount, the obligee is entitled to that amount as well.