Legal invoicing the whole firm can follow.

Legal invoicing software turns a law firm's recorded work into client invoices and then tracks those invoices until they are paid. It pulls in approved time entries and expenses for a matter, applies the matter's fee arrangement, produces a numbered invoice the client can read, sends it, and records payments against it. Good invoice management for law firms also keeps an audit trail: issued invoices are corrected by a void or a credit note rather than edited or deleted.

For a firm, the value is control across many matters and many billers. Someone in the back office needs to see which invoices are drafts, which have been sent, which the client has viewed, which are partly paid and which are overdue, and they need the payment side to land in the books without re-keying.

LawAOS does this in its Invoices module. Invoices move through Draft, Finalized, Sent, Viewed, Partial, Overdue, Paid and Void. Partial and Paid are set from recorded payments, only drafts can be deleted, and every payment and credit note posts to the firm's general ledger.

A single lawyer can keep invoices in their head. A firm with several fee earners, departments and hundreds of open matters cannot, so the software has to answer back-office questions quickly: what is ready to bill, what went out this week, and what has gone unpaid past its due date.

One numbering sequence

LawAOS numbers invoices as PREFIX-YEAR-NNN, and the sequence is shared across the firm and its departments, so two departments never issue the same number.

Status driven by money

An invoice becomes Partial or Paid because a payment was recorded against it, which keeps the list honest. Nobody marks an invoice paid by changing a label.

Corrections that leave a trail

Once issued, an invoice is corrected by voiding it or raising a numbered credit note. Credit notes post to the ledger, so the books and the invoice list agree.

Overdue handled every day

A daily job marks unpaid Sent or Viewed invoices past their due date as Overdue and notifies the person who created them.

Automation in legal invoicing is useful where the rule is clear: pulling unbilled approved time into a draft, numbering, setting status from payments, flagging overdue invoices, and posting journals. Judgement calls stay with a person. In LawAOS, a pre-bill review lets a biller record write-downs before the invoice is finalized, and those write-downs feed the realization figures in reports.

An AI narrative review can read time-entry descriptions before billing and point out vague or problematic wording. Dismissing one of its findings needs a typed reason, so the review is recorded. When an invoice goes overdue, Draft reminder with AI writes a reminder for a person to read and send; nothing goes to the client on its own.

• Buying invoicing that is separate from time capture, so approved hours have to be copied across by hand.
• Allowing issued invoices to be edited in place, which breaks the audit trail and the ledger.
• Treating payment tracking as a spreadsheet job outside the system, so the receivables figure is never current.
• Ignoring departments: separate numbering per team leads to duplicate invoice numbers.
• Assuming online payment works out of the box. Card payment needs a connected payment account first.