Yes, on request. This is especially useful if you've canceled your contract and your remaining balance can no longer be offset against invoices. Just send us a support ticket in the Accounting category and tell us the amount you'd like and your bank details. We'll review your request and pay out your balance by bank transfer. As long as your contract is active, your balance is normally offset against your invoices.
By the way, your earnings from the affiliate program are a separate balance. You can have them paid out yourself at any time under Promotion → Refer a Customer, as soon as the minimum amount has been reached.