(a) Except as provided in subsections (b) and (c) of this section, all decrees and judgments for the payment of money shall bear interest at ten percent (10%) per year from the date of rendition until paid.
(b) If the decree or judgment is founded on a contract and all parties to the contract agreed to interest at a certain rate, the rate of interest on the decree or judgment shall correspond to the terms of the contract.
(c) A periodic payment or installment for child support or maintenance which is unpaid on the date due and which on or after July 1, 1990, becomes a judgment by operation of law pursuant to W.S. 14-2-204 shall not bear interest.