BS”D
It is only mutar to launder money on Chol HaMoed if it is being used to purchase goods and services that are necessary for the chag or used to buy aliyois and kibudim on Shmini Atzeres and Simchas Torah.
-Tiferes Gehennom on the Ateres Menuvalim, Rabbi Dovid Azazel Schmoigerman of Creedmoor, seif 80 posuk 90.