PCLaw has been the dominant trust-accounting and billing platform for Canadian law firms since the late 1990s. At peak adoption it ran in over 15,000 Canadian firms. In 2024, Thomson Reuters formally deprecated the desktop version and began pushing its user base toward PCLaw cloud — at prices roughly double the legacy licence. For many small and solo firms, that cost jump has triggered a migration that is long overdue but genuinely difficult to execute.
The compliance dimension makes this more than a normal software upgrade. Canadian provinces require lawyers to maintain trust accounting records for a minimum of ten years. Any gap in that record during a migration — lost transactions, corrupted ledgers, missing three-way reconciliation data — becomes an audit problem with the Law Society. The stakes are higher than a typical IT project.
What Actually Changed With PCLaw
The desktop version of PCLaw (versions 16 and earlier) is no longer actively developed. Thomson Reuters still sells support contracts, but feature development stopped several years ago. The product runs on a local SQL database, which means your data lives on-premises — and your backup and DR story is your own responsibility.
PCLaw cloud is the nominal successor. It is browser-based, hosted by Thomson Reuters, and includes trust accounting. The pricing shift has been aggressive: firms that paid C$1,200–2,000/year for a desktop perpetual licence are looking at C$4,000–8,000/year for cloud equivalents depending on user count. The per-user pricing model compounds this as firms add paralegals and clerks.
For firms not willing to absorb that increase, the migration is not optional — it is just a matter of timing and destination.
What You Are Actually Migrating
Before evaluating alternatives, map what you have. A PCLaw migration involves five distinct data categories, and they require different handling:
| Data category | Volume risk | Compliance risk | Migration complexity |
|---|---|---|---|
| Client and matter records | Medium | Low | Low — most platforms import CSV |
| Time entries and WIP | High (years of records) | Low | Medium — field mapping varies |
| Invoices (posted and outstanding) | High | Medium | Medium — AR balance must reconcile |
| Trust ledgers | High | Critical | High — three-way reconciliation must be preserved |
| General (operating) accounts | Medium | Medium | High if migrating full GL history |
The practical approach most firms take is a clean-ledger cutover: migrate open matters, outstanding AR, and current trust balances; archive historical time and billing records in PCLaw read-only mode for the retention period. This is significantly less complex than attempting a full history migration and is what most migration specialists recommend.
Never attempt to migrate trust ledger data without a certified accountant or migration specialist reviewing the before-and-after reconciliation. A discrepancy discovered two years later during an LSO audit is harder to explain than a documented clean cutover.
Exporting From PCLaw Desktop
PCLaw desktop has limited native export tools. The main options are:
- PCLaw Export Wizard — exports clients, matters, time, and billing to CSV. Accessible under File → Export. The schema is documented and most destination platforms have import templates built for it.
- Trust account reports — run the Trust Listing by Matter and Trust Bank Reconciliation reports and export to PDF and Excel before doing anything else. These are your pre-migration baseline.
- General ledger export — available under Accounts → Journal and filtered by date range. Export at minimum the current fiscal year plus the prior two years.
- Direct SQL access — PCLaw stores data in a local MSDE/SQL Express database. If you have a migration consultant, they can extract directly from the database for cleaner data than the export wizard produces.
Before any export, do a full database backup and store it offline. This is your insurance policy for the retention period.
LSO Trust Compliance in the Cloud
The Law Society of Ontario — and equivalents in BC, Alberta, and other provinces — requires solicitors holding client funds to maintain a trust account, a trust ledger, and a monthly three-way reconciliation between the trust ledger, the trust bank statement, and the list of client balances. The software you migrate to must support all three.
The LSO does not maintain an approved software list. It specifies functionality requirements, not product names. When evaluating alternatives, you need written confirmation from the vendor that the system produces:
- A trust ledger recording all receipts and disbursements per client matter
- A trust bank reconciliation tool matching ledger to bank statement
- A list of client trust balances at any point in time
- Audit trail logs for any modifications to trust records
All four platforms reviewed below meet these requirements. The differentiator is how well each supports the workflow Canadian firms actually use — not whether they technically comply.
Platform Comparison
| Platform | Pricing model | Trust accounting | General accounting | Est. cost (3 users/yr) | Contract term |
|---|---|---|---|---|---|
| PCLaw cloud | Per user/month | Native, full GL | Native (full GL) | C$4,800–7,200 | Annual |
| Clio (Grow tier) | Per user/month | Native (trust only) | QuickBooks/Xero integration | C$5,400–7,200 | Monthly or annual |
| CosmoLex | Per user/month | Native, full GL | Native (full GL) | C$3,600–5,400 | Monthly or annual |
| MyCase | Per user/month | Native (trust only) | QuickBooks integration | C$3,000–4,200 | Monthly or annual |
| ContractKit | Flat fee per firm | Native (IOLTA/trust) | Billing + basic GL | C$600–1,400 (Solo–Firm) | Monthly, no lock-in |
Cost estimates are indicative for a 3-user firm on mid-tier plans in Canadian dollars at 2026 exchange rates. All vendors require direct quotes. Implementation and data migration costs are additional.
PCLaw Cloud — The Path of Least Resistance
Migrating within the Thomson Reuters ecosystem is the lowest-friction path for firms with complex trust and general ledger histories. Thomson Reuters offers a migration tool that reads the PCLaw desktop database and imports into the cloud version, handling most of the field mapping automatically.
The advantage is continuity: your chart of accounts, client numbering scheme, and workflow patterns carry forward. The disadvantage is the price point. Thomson Reuters has positioned PCLaw cloud as a premium product, and the per-user fees make it expensive relative to alternatives that handle the same trust accounting requirements.
If your firm bills significant general ledger transactions — payroll, property trust, estate accounting — and you want those to stay in the same system as your matter billing, PCLaw cloud is harder to replace. For firms whose general accounting needs are modest, you are paying for GL capability you do not use.
Clio — Market Leader, Accounting Gap
Clio is the most widely used legal practice management platform in Canada and has deep integrations with the LSO's online filing systems. Its trust accounting module handles three-way reconciliation and is trusted by thousands of Ontario firms. However, Clio does not include general (office) accounting. You will need QuickBooks or Xero alongside it, which adds C$600–900/year and requires dual data entry for operating account transactions.
Clio's strength is its ecosystem: 250+ integrations, strong mobile apps, and a large community of legal consultants who know the platform. For firms where legal work is the primary concern and accounting stays with a bookkeeper in QuickBooks, Clio is a reasonable choice and the migration tooling from PCLaw is mature.
The cost calculation for a 3–5 user firm is not dramatically different from PCLaw cloud once QuickBooks is included. The question is whether Clio's workflow tools and integrations justify the comparable spend.
For an independent comparison, see our PCLaw vs ContractKit breakdown and the dedicated PCLaw migration guide for step-by-step data preparation.
CosmoLex — The Closest Like-for-Like Replacement
CosmoLex is the platform that most directly replicates PCLaw's combined trust-and-general-accounting architecture. It includes a full general ledger, trust accounting, time and billing, and matter management in a single system — no external accounting package required.
It is purpose-built for Canadian and US law firms, and the Canadian version handles provincial trust account requirements explicitly. Unlike Clio, you will not need QuickBooks. The PCLaw import tool in CosmoLex handles clients, matters, time entries, and open AR. Trust ledger migration requires a clean-balance cutover — CosmoLex does not import historical trust transactions, only opening balances.
The pricing is lower than both PCLaw cloud and Clio's Grow tier. At approximately C$99–149/user/month (USD pricing converted), it represents meaningful savings for firms with 3–5 users. CosmoLex does require annual commitment for the best pricing.
The limitation is ecosystem breadth: CosmoLex has fewer third-party integrations than Clio and a smaller consultant community. For firms that want an all-in-one accounting replacement and are comfortable with a more self-service approach, it is the strongest like-for-like alternative to PCLaw desktop.
MyCase — Best for Client Communication-Heavy Firms
MyCase occupies a different position: its differentiating feature is the client portal and communication hub rather than deep accounting. It handles trust accounting adequately and has a clean interface, but for general accounting you will need QuickBooks.
For firms where client communication, document sharing, and electronic signatures are the primary workflow pain — family law, immigration, real estate — MyCase often wins on usability. The trust accounting module is sufficient but not as feature-rich as CosmoLex. At a lower price point than Clio or PCLaw cloud, it is worth evaluating if your accounting complexity is low and your client communication volume is high.
ContractKit — When Flat-Fee Pricing Changes the Calculation
ContractKit (Solo C$49/mo, Firm C$99/mo, Enterprise C$249/mo flat fee — not per user) targets solo attorneys and small firms where per-user pricing from Clio or PCLaw cloud creates disproportionate cost. The flat pricing means a 3-person firm pays the same as a 1-person firm on the same tier.
It includes native IOLTA/trust accounting, conflict checks, time tracking, billing, and Lex AI with cited sources. For Canadian firms, the trust accounting module handles three-way reconciliation consistent with provincial requirements.
Where ContractKit fits: solo practitioners and firms of 2–4 users moving off PCLaw desktop who do not need a full general ledger in the practice management system and are comfortable using separate bookkeeping software for operating accounts. The 14-day free trial requires no credit card, so the cost of evaluation is minimal. See the PCLaw migration guide for data preparation steps before starting a trial.
Where it does not fit: firms handling complex estate accounting, property trust with high transaction volume, or payroll through their practice management system. Those use cases benefit from CosmoLex's or PCLaw cloud's full general ledger.
Migration Timeline: 6 Phases
| Phase | Duration | What to do |
|---|---|---|
| 1. Audit your PCLaw data | 1–2 weeks | Run trust reconciliation, identify open matters, outstanding AR, and any known data quality issues before export |
| 2. Evaluate platforms | 2–3 weeks | Demo 2–3 platforms, confirm provincial trust compliance, get written pricing with contract terms |
| 3. Select and contract | 1 week | Negotiate, check exit provisions. Avoid platforms requiring 3-year lock-in if you are not certain of fit |
| 4. Data preparation and export | 2–3 weeks | Full PCLaw database backup. Export clients, matters, time, AR, trust opening balances. Reconcile before migration |
| 5. Parallel running | 4–6 weeks | Run both systems. All new time, billing, and trust entries go into the new platform. Use PCLaw read-only for reference |
| 6. Cutover and archive | 1 week | Full cutover. Archive PCLaw database per LSO retention requirements (10 years). Verify trust reconciliation in new system |
What to Verify Before Signing Any Contract
These questions distinguish the platforms that handle Canadian trust compliance well from those with gaps:
- Does your trust accounting module produce a three-way reconciliation report matching the trust ledger, the trust bank statement, and the list of client balances? Ask for a sample report.
- How is the PCLaw data imported — is there a dedicated migration tool, or will we need a consultant?
- What is the data residency for Canadian customers — is data stored on Canadian or US servers? Some provincial bar rules have data residency preferences.
- What are the contract exit terms — can we export our data in a standard format (CSV/PDF) if we leave?
- What does your support coverage look like during migration — is there dedicated migration support, and what does it cost?
- Does the system support multi-currency trust accounts if your firm handles US dollar retainers?
The LSO and provincial law societies do not prescribe specific software. They prescribe what the accounting records must contain and how they must be maintained. Your responsibility is to verify that the system you choose produces compliant records — not to rely on a vendor's marketing claim that they are "LSO compliant."
The Archive Problem — Often Overlooked
PCLaw desktop will likely continue running after you migrate away from it. That is the plan. You need access to historical billing records, trust transaction history, and closed matter files for the LSO retention period — and those records live in PCLaw.
Before migration, negotiate a read-only licence or ensure you can install PCLaw on a separate archived machine with no active billing. Alternatively, export the complete database as a SQL backup and retain it with documentation for how to restore it. Some firms retain the old PCLaw installation on a single dedicated PC that stays offline after migration, brought online only when a historical record is needed.
The worst outcome is migrating away and then discovering that your historical records are inaccessible because the licence has lapsed or the old machine failed. Plan for archival access before you migrate, not after.
Choosing Based on Firm Type
The right replacement depends more on practice area and accounting complexity than on feature lists:
- Estate, property trust, or payroll complexity: CosmoLex or PCLaw cloud — both include a full general ledger natively.
- Litigation or family law, modest accounting: Clio with QuickBooks, or ContractKit if per-user pricing is a problem.
- Solo or 2-person firm with straightforward trust: ContractKit's flat pricing eliminates the per-user penalty as you add staff.
- Document-heavy or client portal priority: MyCase handles communication workflows better than any other option in this list.
Start the evaluation now. PCLaw desktop is not going to become more supported over time, and the risk of an LSO trust audit finding you on an unsupported system compounds every year you defer the decision. The migration itself takes 8–12 weeks done properly — which is well within reach before any near-term renewal event. You can start at ContractKit's free trial without a credit card to assess fit before committing, and the migration guide covers data preparation in detail.