Legal Invoice Template

Your firm name and contact details, the client's name, the matter name/number, a unique invoice number, itemised time entries with date, description and time in tenths of an hour, disbursements listed separately from fees, any retainer or trust balance applied, and the total due.

Most commonly in tenths of an hour (6-minute increments), though flat fees are standard for defined matters like an uncontested will or a standard contract review. Whichever applies, state it clearly — an hourly matter billed without time increments shown is difficult for a client to verify.

Fees are what you charge for your time and expertise. Disbursements are costs paid out on the client's behalf — filing fees, court reporter costs, expert fees — and are reimbursements, not compensation. Keeping them in separate sections of the invoice is standard practice and, in many jurisdictions, close to a professional-conduct requirement.

Funds held in a client trust account remain the client's money until earned. Each invoice should show the trust balance at the start of the period, the fees and costs drawn against it, and the resulting balance — not just a total charged against an assumed pool of funds.

Block billing is combining several distinct tasks into one time entry with a single combined duration — for example "review documents, draft letter, call client — 3.0 hours." It makes an invoice difficult to audit and is one of the most common reasons a legal bill gets challenged or reduced; itemise each task as its own entry.

You can, but group the time entries clearly by matter rather than combining them into one undifferentiated total — the client (and whoever at their end approves the bill) needs to be able to allocate each charge to the right file.

Less detail on time, since the fee isn't hourly, but the invoice should still state the matter, the scope the flat fee covers, and any disbursements separately — a flat fee covers your time, not out-of-pocket costs incurred on the client's behalf.

State it explicitly on the invoice rather than letting the trust balance go negative or silently continuing to bill — note the exhausted retainer, the amount now due directly, and whether a new retainer is being requested to continue the matter.

It's good practice, particularly for matters with a defined scope — referencing the engagement letter or retainer agreement date makes a scope dispute faster to resolve, since both sides can point to the document that set expectations.

A clear, itemised PDF is acceptable for most solo practitioners and small firms — what matters is the detail (time increments, task descriptions, disbursements separated from fees), not the software it was produced in. Large firms with e-billing requirements from corporate clients may need specialised systems, but that's a client requirement, not a general legal-billing rule.