Overview
ProLaw (originally a Thomson Reuters product, now under the Elite brand following Francisco Partners' August 2025 acquisition of Elite from TPG — TPG itself bought Elite from Thomson Reuters in June 2023) is a comprehensive practice management system built for mid-size and large law firms that need integrated billing, accounting, matter management, and document management in a single platform. Unlike modular cloud tools that require third-party integrations for accounting, ProLaw runs the full firm lifecycle — from matter open through final billing — without middleware. At its core, ProLaw handles general ledger, accounts receivable, accounts payable, and IOLTA trust accounting natively, alongside matter-centric document management and court deadline tracking. The built-in business intelligence module gives managing partners and CFOs real-time visibility into WIP, realization rates, and firm profitability without exporting data to spreadsheets. ProLaw is available in both on-premise and hosted configurations. Most new implementations choose the hosted option to reduce internal IT burden, while firms with strict data residency requirements retain on-premise deployments. Implementation is project-based and typically spans three to six months, requiring an Elite implementation team or a certified consulting partner. ProLaw integrates with Westlaw for research billing and cite tracking, and connects to Elite 3E for firms transitioning to the enterprise platform. Elite 3E is the long-term flagship product; ProLaw clients on legacy builds should factor succession planning into their evaluation.
Key features
Matter Lifecycle Management
ProLaw tracks all phases of a matter from open to close — tasks, deadlines, status updates, and responsible attorneys in a single matter record. Court deadline calculators automate due date computation based on jurisdiction-specific rules, reducing the risk of calendar errors on complex multi-party matters. Matter records link directly to time entries, expenses, and billing, giving managing partners a real-time view of work in progress across the firm. Custom matter codes, practice area tags, and client hierarchies support the reporting structures mid-size and large firms require.
Integrated Accounting
ProLaw includes a full accounting module covering general ledger, accounts receivable, accounts payable, and IOLTA trust accounting — all without a third-party integration or data export. Client trust ledgers maintain matter-level balances with overdraft prevention and three-way reconciliation built in. Pre-bill editing, billing rate schedules, and collections workflows handle the full revenue cycle from draft invoice to cash receipt. Having billing and accounting in one system eliminates reconciliation errors that occur when practice management and accounting software run as separate products.
Business Intelligence
The built-in BI module generates profitability reports, WIP aging summaries, realization rate analysis, and attorney productivity metrics directly from ProLaw data. Managing partners and CFOs can run firm-wide or matter-specific reports without exporting to Excel or purchasing a separate analytics tool. Dashboards display open receivables, write-off trends, and budget-to-actual performance in configurable views by practice group or office. ProLaw reporting depth is a primary reason mid-size firms choose it over lighter practice management tools.
Document Management
ProLaw includes a native document management module with matter-centric folder organization, version control, and document profiling. Documents file to client-matter records automatically, maintaining a complete audit trail of who created, edited, or checked out each document. Integration with Microsoft Office allows attorneys to save Word and Outlook documents directly from their desktop without switching applications. Firms requiring a dedicated cloud DMS can also connect ProLaw to NetDocuments or iManage through the integration framework.
Westlaw Integration
As a Thomson Reuters product, ProLaw connects directly to Westlaw for research billing — attorneys launch research from a matter record and the time is tracked back automatically. Cite checking and research references attach to the matter, supporting knowledge management for complex litigation and appellate matters. The integration surfaces Westlaw content within the ProLaw interface for firms with enterprise research subscriptions. For firms already paying for Westlaw, this eliminates the manual step of separately logging hours for research performed.
Pros and cons
Pros
- All-in-one platform: billing, IOLTA trust accounting, and matter management run from a single database — no reconciliation across disconnected systems
- Deep Thomson Reuters ecosystem — native Westlaw integration and a clear upgrade path to Elite 3E for firms planning long-term
- Built for mid-size firm CFOs: GL, AR/AP, and profitability reporting without third-party accounting software
- Highly configurable for complex matters: custom billing rate schedules, multi-office support, and practice group reporting
Cons
- On-premise legacy architecture requires dedicated IT staff or a managed hosting contract — not appropriate for firms without IT resources
- Steep implementation timeline: most deployments take three to six months and require a Thomson Reuters team or certified consulting partner
- Pricing is opaque — contact sales only, with no public rate card or self-serve trial
- Thomson Reuters is gradually migrating clients to Elite 3E; ProLaw clients should factor platform succession into long-term planning
Pricing
Pricing current as of May 2026; verify with vendor before purchasing.
Who it's best for
Best fit for
- Mid-size law firms (50–500 attorneys) needing fully integrated billing, accounting, and matter management
- AmLaw 200 firms on budget that want enterprise functionality without full Elite 3E costs
- Firms already paying for Westlaw or Elite who benefit from the Thomson Reuters ecosystem integration
- Legal departments or firms with complex financial reporting requirements for partners or CFOs
Not a fit for
- Solo and small firms — implementation cost and complexity not justified below 50 attorneys; use Clio, MyCase, or PracticePanther instead
- Firms wanting SaaS-only cloud deployment with transparent self-serve pricing
- Firms without dedicated IT staff or budget for a multi-month implementation engagement
Frequently asked questions
ProLaw does not publish pricing. It is sold as a customized enterprise solution; contact Thomson Reuters or a certified implementation partner for a quote based on firm size and required modules.
ProLaw is available both as on-premise software installed on firm servers and as a hosted cloud solution managed by Thomson Reuters. Most new implementations opt for the hosted option to reduce IT burden.
ProLaw is designed for mid-size to large law firms, typically 50 or more attorneys. Solo attorneys and small firms should consider Clio, MyCase, or PracticePanther as more appropriately sized alternatives.
Yes. As a Thomson Reuters product, ProLaw integrates with Westlaw to allow attorneys to launch research from within the platform and have that time tracked back to the matter automatically.
Both are enterprise law firm platforms from Thomson Reuters. Elite 3E is the more modern, cloud-native successor designed for large and global firms. ProLaw is the established product for mid-size firms. Thomson Reuters is gradually migrating ProLaw clients to 3E for long-term support continuity.
ProLaw does not offer a self-serve free trial. Implementation is project-based and begins with a discovery call with Thomson Reuters or a certified implementation partner. Prospective clients can request a demo from the Thomson Reuters sales team to evaluate the platform before committing.