Law Firm Unbilled Time to Invoice: Turn Billable Hours Into Client-Ready Invoices
Stop retyping time sheets at month-end. Pull unbilled entries into invoices, review line items, and send—without losing the link to each matter.
Month-end billing should not mean rebuilding the same work twice: attorneys log time all month, then someone copies descriptions and hours from a spreadsheet into invoice line items by hand. That gap is why firms search for law firm unbilled time entries, convert billable hours to invoice, and a time entry to invoice workflow that keeps every dollar tied to the matter it came from.
The fix is not “bill faster.” It is billing from the system of record—select unbilled time, generate line items, review once, and issue—so WIP does not live in a shadow ledger.
Why unbilled time piles up
Even disciplined firms leak revenue when time and invoices live in different places:
- Double entry — Paralegals retype attorney narratives into Word or PDF invoices, introducing typos and wrong rates.
- Selection errors — “I thought that call was already billed” disputes start when there is no clear billed vs. unbilled state per entry.
- Multi-matter clients — One client with three open cases makes it easy to invoice hours against the wrong file.
- Retainer confusion — Deposits and earned fees get explained in email while the invoice shows a different story.
Search phrases like legal billing unbilled hours and law firm invoice from time entries usually describe software that answers one question: Which hours are still waiting on an invoice, and can I add them in one pass?
What a solid time-to-invoice workflow includes
| Capability | Why it matters |
|---|---|
| Unbilled flag per time entry | Once invoiced, an entry should not appear again for billing |
| Pull from case or client scope | Bill one matter, several matters, or all open work for a client |
| Line items linked to source entries | Audits and client questions trace back to the original log |
| Editable descriptions before send | Attorneys refine narratives without re-keying hours |
| Tax, discount, and notes on the invoice | Same document clients see in portal or PDF |
| Retainer context optional | Activity statements show deposits and burn-down beside fees |
This is the practice management billing workflow mature firms expect—not exporting CSVs to a separate billing tool every month.
Step-by-step: from unbilled hours to issued invoice
1. Log time where the matter lives
Capture work on the case as you go: calls, drafting, research, travel (when billable). Use descriptions clients will accept—“Review discovery responses; draft privilege log issues list”—not “Legal work.” Our time tracking and billing best practices guide covers habits; the platform holds the data.
Pair real-time entry with related workflows: after a browser call from the case file, log the conversation; after drive time, log travel blocks while dates are fresh.
2. Open invoice creation with the right scope
When you are ready to bill, start from Invoices → New (or the case’s billing area). Choose:
- Single case — Common for matter-specific bills.
- Multiple cases — Same client, several files in one statement.
- Client-wide — All unbilled time across that client’s open matters.
The system should load only entries not yet tied to an invoice for the selected scope—your working set of WIP.
3. Select unbilled time entries
Review the list: date, description, duration, rate, and amount. Check the rows you want on this invoice; skip write-offs or non-billable items before they become line items. For multi-case scopes, confirm each row’s matter so court costs and family law hours do not mix on one bill without intent.
In LawyerLink (MyLawyerLink), unbilled entries load from the matter record; selected rows become invoice line items with quantities and rates carried from the time entry, so you are not retyping math.
4. Adjust line items and invoice metadata
Before issuing:
- Tighten descriptions for client-facing clarity (keep privileged strategy in case notes, not on the invoice).
- Confirm issue date, due date, and invoice number sequencing.
- Apply tax or discount if your firm uses them on this client.
- Add notes for payment instructions or retainer summaries—especially when paired with retainer tracking and activity statements.
5. Issue and close the loop
Send through your normal channel: client portal, email, or export. Once saved, billed time entries should drop off the unbilled list so the same hours cannot be invoiced twice. If the client pays on a payment plan, installment invoices still benefit from the same clean link to underlying time.
Billing hygiene that prevents disputes
- One source of truth — If time lives in email and invoices in another app, unbilled reports will always lie. Keep both in the practice system.
- Weekly WIP review — Partners glance at unbilled totals by matter before month-end surprises.
- Align with flat-fee matters — Hybrid arrangements may still log time internally while issuing flat invoices; know which entries are client-facing. See flat-fee and hybrid billing workflows.
- Permissions — Billing staff need invoice and time visibility; fee earners need entry rights without deleting audit history. Team roles and least privilege help.
Common mistakes
- Rebuilding line items manually when unbilled rows already exist.
- Billing the same entry twice because nothing marks hours as invoiced.
- Weak time descriptions that force write-downs even when the workflow is correct.
- Ignoring retainer balance on the same document clients use to pay.
How LawyerLink connects time and invoices
LawyerLink keeps time entries, unbilled lists, and invoice line items on the same case and client records. Create an invoice from one matter, several matters, or all of a client’s open work; select unbilled hours to populate line items; add tax, discounts, and retainer activity notes; and issue through the client portal when you want clients to pay online—without a separate billing spreadsheet.
Still copying billable hours into invoices by hand at month-end? Sign up for LawyerLink to pull unbilled time entries into client-ready invoices, alongside case management, portal billing, and the rest of your matter-centered workflow.