Legal billing is among the most scrutinized invoicing in any profession. Corporate clients, insurance companies, and government entities often have strict requirements for how legal fees are documented, formatted, and submitted. A proper invoice template for lawyers needs to track billable hours in 6-minute increments, separate attorney fees from costs and disbursements, reference matter numbers, and in many cases comply with LEDES (Legal Electronic Data Exchange Standard) formatting.
This guide provides a free legal invoice template, covers the billing practices specific to law firms and solo attorneys, and addresses the compliance requirements that make legal invoicing unique.
Why Legal Invoicing Is Different
- 6-minute billing increments: The legal industry bills in tenths of an hour (0.1 = 6 minutes). Your invoice must reflect time entries in this format, not standard hourly quarter-hour increments.
- Matter-based billing: Each client engagement is tracked as a “matter” with a unique reference number. Invoices must reference the specific matter for the client’s internal tracking.
- Separation of fees and costs: Legal invoices must clearly distinguish between attorney fees (your billable time) and costs/disbursements (filing fees, court costs, expert witness fees, copying, travel).
- Trust account (IOLTA) interaction: Many legal engagements involve retainer deposits held in a client trust account. Invoices must reference draws against the trust balance.
- LEDES compliance: Corporate and insurance clients increasingly require invoices in LEDES format — a standardized electronic billing format that their e-billing systems can process.
- Detailed task descriptions: Courts and ethics boards may review billing records. Every time entry must have a specific, substantive description of the work performed.
Sample Legal Invoice Structure
| Description | Hours | Rate/Hr | Type | Amount |
| PROFESSIONAL FEES | ||||
| Review and analyze plaintiff’s motion for summary judgment | 1.8 | $350 | Atty | $630.00 |
| Draft memorandum in opposition to motion | 3.4 | $350 | Atty | $1,190.00 |
| Legal research: applicable case law re: statute of limitations | 2.1 | $350 | Atty | $735.00 |
| Telephone conference with client re: settlement strategy | 0.6 | $350 | Atty | $210.00 |
| Paralegal: Document review and exhibit preparation | 4.2 | $125 | Para | $525.00 |
| COSTS & DISBURSEMENTS | ||||
| Court filing fee — Opposition to MSJ | Cost | $435.00 | ||
| Westlaw legal research charges | Cost | $87.50 | ||
| Copying and printing (342 pages @ $0.15) | Cost | $51.30 | ||
| Less: Retainer Trust Balance Applied | -$2,000.00 |
Legal Billing Models
Hourly Billing (Most Common)
The default for litigation, corporate law, and most legal work. Track time in 6-minute (0.1 hour) increments. Different billing rates for partners, associates, and paralegals. Invoice monthly with a detailed breakdown of every time entry.
Flat Fee / Fixed Fee
Common for transactional work with predictable scope: document preparation, business formation, real estate closings, simple wills, trademark filings. Invoice a fixed amount for the defined deliverable.
Retainer (Evergreen)
Client deposits funds into a trust account (IOLTA). As work is performed, you invoice against the trust balance. When the balance drops below a threshold, the client replenishes. Track trust account draws on every invoice. For retainer automation, see our recurring invoices guide.
Contingency Fee
Attorney receives a percentage of the recovery (typically 33–40%). No hourly invoicing — the fee is calculated at case resolution. However, you still need to invoice for costs and disbursements throughout the case.
Blended Rate
A single rate for all attorneys working on the matter, regardless of seniority. Simplifies billing for the client but typically used only when negotiated by corporate clients.
Time Entry Best Practices for Lawyers
- Record time entries daily. Reconstructing your day from memory at the end of the week is inaccurate and leads to underbilling. Record each task as you complete it.
- Be specific and substantive. “Review documents” is insufficient. “Review and analyze 47 pages of plaintiff’s discovery responses, identify 3 deficiencies for follow-up” is proper.
- Avoid block billing. Don’t combine multiple tasks into one entry (“Review motion, draft response, call client: 4.5 hrs”). Each task should be its own entry with its own time.
- Use UTBMS task codes when required. The Uniform Task-Based Management System codes (L110 for fact investigation, L120 for analysis/strategy, etc.) are required by many corporate and insurance clients.
- Track non-billable time separately. Business development, CLE attendance, and administrative tasks should be tracked internally but never appear on client invoices.
- Apply billing judgment. Before invoicing, review your time entries and reduce any that seem excessive. Voluntary reductions demonstrate fairness and build client trust.
Trust Account (IOLTA) and Invoice Interaction
When a client has funds in a trust account, your invoice should include:
- The total professional fees for the billing period
- The total costs and disbursements
- The trust account balance before this invoice
- The amount drawn from the trust to cover this invoice
- The remaining trust balance after the draw
- A replenishment request if the balance is below the agreed threshold
This transparency is not just best practice — it’s an ethical requirement in most jurisdictions. Clients have a right to know how their trust funds are being used.
LEDES Billing Compliance
LEDES (Legal Electronic Data Exchange Standard) is an electronic billing format required by many corporate legal departments and insurance companies. Key requirements:
- LEDES 1998B format: The most common standard. A pipe-delimited text file with specific field requirements for invoice number, law firm info, client matter number, timekeeper identification, task codes, and amounts.
- UTBMS codes: Task, activity, and expense codes that categorize each billing entry.
- E-billing system submission: Invoices are submitted through the client’s e-billing platform (Serengeti, CounselLink, Legal Tracker) rather than via email.
If your clients require LEDES compliance, your practice management software must support LEDES export. For smaller firms with clients who accept standard PDF invoices, a professional invoicing tool with detailed line items is sufficient.
8 Invoicing Tips for Solo Attorneys and Small Firms
- Invoice monthly, without exception. Clients who receive regular invoices are more likely to pay on time than those who get a large bill after months of accumulated work.
- Separate fees from costs on every invoice. This is both an ethical requirement and a transparency best practice.
- Reference the matter number on every invoice. Corporate clients use matter numbers for internal routing. Missing numbers delay payment.
- Include a billing summary. At the top of the invoice, include: total fees, total costs, total invoice, trust account draw, and amount due.
- Set clear payment terms. Net 30 is standard for legal invoicing. Include a late payment interest clause (1–1.5% per month) in your engagement letter.
- Embed payment links for non-trust payments. For flat-fee work and non-retainer clients, one-click Stripe payment accelerates collection.
- Apply billing judgment before sending. Review every invoice and voluntarily reduce any entry that seems excessive. This builds trust and preempts fee disputes.
- Keep copies of everything. Legal invoicing records must be retained for at least 7 years (longer in some jurisdictions). Use your invoicing tool’s archive function.
Frequently Asked Questions
What billing increment do lawyers use?
The standard is 0.1 hour (6-minute) increments. A 15-minute phone call is billed as 0.3 hours, a 45-minute research session as 0.8 hours. Some jurisdictions and clients accept quarter-hour (0.25) billing, but tenths are the industry default.
Do I need LEDES-compatible invoicing?
Only if your clients require it. Large corporations, insurance companies, and government entities typically require LEDES format. Individual clients and small businesses accept standard PDF invoices.
How should I handle trust account draws on my invoice?
Show the full invoice total, then a line item for the trust account draw (deducted from the total), and the remaining balance due (if the trust didn’t cover the full amount). Always show the trust balance before and after the draw.
Is it ethical to charge for time spent on invoicing?
Generally no. Time spent preparing invoices, billing administration, and collections is considered overhead and should not be billed to clients. Invest in efficient invoicing tools to minimize this non-billable time.
What’s the average collection rate for law firms?
The industry average is approximately 85–90% of billed amounts. Firms with clear payment terms, regular invoicing, and modern payment options (credit card, ACH) typically achieve higher collection rates. Embedding payment links in invoices is one of the most effective ways to improve collections.
Streamline Your Legal Billing
DevInvoice handles the detailed line items, client management, and payment collection that legal invoicing requires. For solo attorneys and small firms who don’t need full practice management software, it’s a fast, professional alternative.
