Built on QuickBooks. Built for Law Firms.
LeanLaw is the Legal Revenue Operations platform built for law firms that administrators and attorneys use to ensure everything billable is captured, money flows through the firm properly, and reports are always run-ready.
1,000+
law firms run on LeanLaw
70%
faster invoice collections
$61K
leaked revenue recovered per attorney each year
20–50×
ROI for a typical 10-attorney firm
Get Rid of the Bottlenecks. Get Back a Day Each Month.
Running your law firm does not have to be so complicated. By uniting attorney time tracking, billing, and accounting, the manual, duplicative work can stop. With LeanLaw, you can track time on your own terms, regardless of the device, and run reports automatically whenever you need to.
Information is always accessible and transparent, so firms can operate in real time from anywhere and maximize firm profitability using any practice model.
- Made for mid-market law firms
- Built natively for QuickBooks Online
- Runs the full billing lifecycle — work performed to collected — on one QuickBooks ledger.
- Frictionless time tracking on any device
- Detailed custom reporting — always run-ready
"Tracking payments to specific matters was a nightmare before LeanLaw. Now everything syncs to QuickBooks automatically. We see invoices paid 70% faster."
Amanda Coughlan, Billing Coordinator
Zahn Law Group
Value at Every Level of the Firm
LeanLaw delivers measurable impact for your firm as a whole, for every client relationship, and for every person who works there — from partners to billing coordinators to bookkeepers.
Run a More Profitable Firm
- Automate workflows to gain efficiency and eliminate double work
- Fuse accounting, billing and bookkeeping to reduce duplicative tasks and data entry
- Gain total visibility, transparency and accuracy across the firm
- Boost billable hours by reducing repetitive administrative tasks
- Works with any firm model or area of law
- Get firm-wide and attorney-level reporting and data insights
Delight Every Client
- One-click visibility into the real-time financial status of a matter
- Automatic client experience and high-value invoicing
- Client-level and matter-level reporting with real-time data insights
- Value that cascades beyond accounting and bookkeeping
- Scalable and flexible enough to grow and change with your firm
- Best-in-class IOLTA accounting
- LEDES billing made easy
Put Your Team in Command
- Simple and familiar user interface
- 2-way, real-time sync with QuickBooks Online
- Reduce assistant-level staff overhead
- Realize untapped value from unbilled hours
- Eliminate billing bottlenecks
- Create consistent, sustainable timekeeping habits across the firm
- Automates and connects manual and/or complex workflows
Six Reasons Law Firms Run on LeanLaw
Most billing tools are built for generic businesses and bolted onto legal workflows. LeanLaw was designed from the ground up for law firms — and the difference shows in every feature.
Built on QuickBooks Online
LeanLaw is the only legal billing platform built natively on QuickBooks Online — the accounting system your bookkeeper already trusts. There's no separate general ledger, no imports, no exports. Every invoice, payment, and trust transaction syncs live the moment it posts.
Made for Mid-Market Law Firms
Generic billing software isn't designed for the complexity of a law firm — multiple billing models, trust accounting rules, LEDES requirements, and compensation structures. LeanLaw is purpose-built so you're not bending a generalist tool to fit legal work.
Frictionless Time Tracking
The fastest path to more collected revenue is capturing time at the moment it happens — from any device. LeanLaw makes it effortless for attorneys so nothing slips through, and your firm recovers an average of $61K per attorney per year in previously leaked revenue.
Real-Time Transparency Across the Firm
Administrators, partners, and attorneys all see the same live data. No waiting for month-end reports. No calling the bookkeeper. Information is always accessible so your firm can operate in real time from anywhere.
Any Billing Model. Any Firm Structure.
Hourly, flat fee, contingency, LEDES — LeanLaw handles every arrangement. Whether your firm has 5 attorneys or 50, one office or many, LeanLaw scales and adapts without forcing you to change how you practice law.
Revenue Operations for Law Firms
LeanLaw isn't just billing software — it's the Legal Revenue Operations partner that connects every step from the first billable minute to collected cash. The result: invoices paid 70% faster, and full visibility into your firm's financial health at all times.
Get Paid Faster and Make Life Better for Everyone at the Firm
Every LeanLaw capability connects back to the same goal: ensuring every billable moment flows through to collected revenue, without the administrative overhead that slows your firm down.
Unite Accounting & Bookkeeping
The best IOLTA accounting built into your billing workflow. Every trust deposit, disbursement, and reconciliation flows through to QuickBooks automatically — with a complete audit trail, always.
Explore Trust AccountingConnect Hourly, Fixed Fee & LEDES Billing
Send polished invoices in seconds with batch billing, custom templates, and approval workflows. LEDES export for e-billing clients included. Firms invoice within 2–3 days — not 10–12.
Explore BillingEasily Track Time & Expenses
Track time on your own terms, regardless of the device. One-tap timers, narrative entry, and expense capture ensure every billable moment is recorded — and nothing leaks.
Explore Time TrackingImprove Client Experience
Online payments, real-time matter status, and electronic invoicing give clients a modern, transparent experience — while getting your firm paid faster.
Explore E-PaymentsIntegrate Matter Management
Sync matters, contacts, and open balances from your practice management software directly into LeanLaw billing. No duplicate entry, no reconciliation headaches.
Explore Matter ManagementReport on Firm and Matters
Run-ready reports whenever you need them — by attorney, matter, or practice area. Automate compensation tracking and eliminate the spreadsheets that steal hours from your billing staff.
Explore Reporting
See Invoices Paid 70% Faster — From Onboarding to Collections
LeanLaw is the Legal Revenue Operations partner for law firms that run like businesses. Connected accounting workflows from first touch to final payment mean more cash flow, less chasing, and a team that finally has time to focus on what matters.
"We've used LeanLaw for a year and a half and we're able to invoice our clients within two to three days, versus 10 or 12 — quickly and electronically, and they pay us faster, which increases our cash flow."
1,000+
law firms run on LeanLaw
70%
faster invoice collections
$61K
leaked revenue recovered per attorney each year
20–50×
ROI for a typical 10-attorney firm
QuickBooks Online Premium App Partner
#1-rated legal app in the QuickBooks Online App Store
CLM Approved Provider
Certified Legal Manager continuing education credit
Trusted by 1,000+ Law Firms
"The revenue allocation feature alone saves us 5+ hours every month. No more spreadsheets to figure out who gets paid what on flat-fee matters."
Jennifer Wells
Beard St. Clair Gaffney Law
"When I saw LeanLaw and showed it to our most techy attorney, his eyes lit up and we jumped in. LeanLaw customer support has been outstanding."
Tammy Kayati, Bookkeeper
Barros, McNamara, Malkiewicz & Taylor
"Tracking payments to specific matters was a nightmare before LeanLaw. Now everything syncs to QuickBooks automatically. We see invoices paid 70% faster."
Amanda Coughlan, Billing Coordinator
Zahn Law Group
Common questions about LeanLaw
Everything you need to know before booking a demo — what LeanLaw is, who it is for, and how it compares to the alternatives.
Why choose LeanLaw over an all-in-one practice management tool?
It comes down to coherence, not consolidation. All-in-one platforms make you compromise on billing and trust accounting to get calendaring, document management, and CRM in the same box — and rarely does any single piece work exceptionally well. LeanLaw does billing and trust accounting exceptionally, and connects the rest: it integrates with your existing practice management software rather than replacing it, so every billable minute moves from time entry to collected cash without asking your firm to give up the workflows your attorneys already use.
Does LeanLaw require QuickBooks Online?
Yes. LeanLaw is built natively on QuickBooks Online and requires an active QBO subscription. This is by design: rather than maintaining a separate general ledger, every invoice, payment, and trust transaction posts to QuickBooks in real time. Your bookkeeper stays in the accounting system they already know, and LeanLaw handles the legal-specific billing layer on top.
Who is LeanLaw designed for?
LeanLaw is purpose-built for mid-market law firms — typically 3 to 50 attorneys — that need professional legal billing, IOLTA-compliant trust accounting, and a real-time connection to QuickBooks Online. It works across every practice area and billing model: hourly, flat fee, contingency, LEDES, and hybrid arrangements.
How long does it take to get up and running with LeanLaw?
Most firms are billing in LeanLaw within 5 to 10 business days of starting onboarding. The LeanLaw team handles data migration from your prior system, configures your QuickBooks Online connection, and provides live training for attorneys, billing staff, and bookkeepers before your go-live date. There is no months-long implementation project.
How does LeanLaw help law firms recover lost revenue?
The average law firm recovers an additional $61,000 per attorney per year after switching to LeanLaw, primarily by capturing billable time that previously went unrecorded. LeanLaw makes it effortless to log time from any device the moment it happens — mobile, desktop, or via calendar integration — so nothing leaks between the work being done and the invoice going out.
Is LeanLaw only for billing, or does it handle trust accounting too?
LeanLaw handles both billing and full IOLTA-compliant trust accounting, including three-way reconciliation that runs automatically. Every trust deposit, disbursement, and transfer posts to QuickBooks Online with a complete audit trail. It is one of the most complete trust accounting solutions available in a cloud-based legal billing platform.