After the end of each calendar month you will need to obtain a commission report from Seller Admin > Manage Affiliate Program > Pay Your Affiliates. (e-junkie.com)
Interest will be calculated daily and settled monthly - within seven business days after the end of each calendar month. (home.saxo)
«on the 10th day following the end of each calendar month from the time the campaign treasurer is appointed» (ballotpedia.org)