YITH WooCommerce Account Funds allows all users to have a virtual wallet for their purchases. Users make a deposit and their sum gets converted into virtual funds that can be used to purchase from your store, avoiding any kind of transaction before purchase.
By combining the use of these two plugins, you will be able to credit the commissions due to your users as funds, so that their balance increases.
After installing and activating both plugins, the option to pay commissions as funds will be added to the payment management of YITH WooCommerce Affiliates.
For further details about YITH WooCommerce Account Funds settings, please refer to the official documentation.