Retained fees. All deposits made for future legal services and expenses shall be held in the Firm's trust account and invoiced for work actually performed on your behalf. You agree to maintain no less than $1,000 on account for ongoing services. Charges billed against the retainer include filing fees, costs for subpoenas and other legal document fees, notary/witness fees, postage, and all other expenses of litigation paid on your behalf by the Firm.