Related serviceLegal I.T.See the service For most small Ontario firms starting fresh, Clio is the safest default: it is cloud-native, has the largest integration ecosystem of the three, and handles trust accounting to a standard that supports Law Society of Ontario record-keeping. CosmoLex is the stronger pick if you want full bookkeeping and accounting built in so you never touch a separate QuickBooks subscription. PCLaw makes the most sense for an established firm that already runs it on-premise and relies on its deep back-office accounting. All three are legitimate, and the right answer depends on your firm size, how you handle accounting, and whether you want to be in the cloud.
This guide is general information about technology practice, not legal advice. It reflects what we see doing hands-on IT work with Canadian law firms, and it does not account for your firm’s particular circumstances. Confirm any specific obligation with your own counsel or with the Law Society directly before you act on it.
DASTech supports and migrates all three products. We are also a genuine Clio Partner, which is the one first-hand vendor relationship we hold in this list, so we will be plain about where that shapes our view and where it does not.
| Feature | Clio | PCLaw | CosmoLex |
|---|---|---|---|
| Cloud vs on-prem | Cloud-native (browser and mobile), nothing to host | Primarily on-premise; hosted options available through LexisNexis or partners | Cloud-native (browser and mobile), nothing to host |
| Trust accounting | Built-in trust accounting with three-way reconciliation; most Canadian firms still pair it with a separate general ledger package, though Clio has been extending its own accounting side, so check what is on offer for a Canadian firm when you evaluate | Deep, long-established built-in legal and trust accounting | Built-in trust accounting plus full business accounting, no separate accounting software required |
| Document management | Built-in storage plus integrations (NetDocuments, Dropbox, Google Drive, OneDrive) | Document handling present but dated; often paired with a separate document system | Built-in document management, fewer external document-system integrations |
| Integrations | Largest ecosystem of the three; check the app directory for the specific tools you rely on | Limited, mostly within the LexisNexis ecosystem | Moderate and growing, smaller than Clio |
| Best-fit firm size | Solo through mid-size, scales well | Established small to mid-size firms with dedicated bookkeeping | Solo through small firms wanting one all-in-one tool |
| Pricing model | Priced per user per month across several tiers, so the tier you need depends on whether you take trust accounting and which add-ons you want | Historically a per-user licence plus annual maintenance, with subscription and hosted options as well | Priced per user per month, with flatter tiers because accounting is included |
Clio is a cloud-native practice management platform covering matters, time and billing, client intake, and trust accounting. Its biggest practical advantage for a small firm is the integration ecosystem: it connects to a wide range of third-party tools, so your calendar, e-signature, document storage, and accounting can all talk to each other without custom work.
For trust accounting, Clio handles client trust ledgers and three-way reconciliation. For a full general ledger, most Canadian firms still pair it with a separate accounting package. Clio has been extending its own accounting side, so ask what is available on a Canadian plan at the time you buy rather than relying on a comparison written earlier, including this one. Because it lives in the browser and on mobile, there is no server to maintain, which suits firms without in-house IT.
We are a Clio Partner, so treat our enthusiasm for it accordingly. That partnership means we know its setup, migrations, and trust configuration in depth. It does not mean Clio is automatically right for you, and we will say so when it is not.
PCLaw, owned by LexisNexis, is one of the longest-running legal accounting and practice management products in Canada. Its strength is deep, mature back-office accounting: general ledger, trust, billing, and reporting all in one package that a bookkeeper can drive comfortably.
The trade-offs are that it is traditionally installed on-premise, its interface feels dated next to the cloud products, and its third-party integrations are limited compared with Clio. Hosted versions exist, which put PCLaw on a remote server you reach over the internet, but that is closer to lifting an old application into a data centre than to a modern cloud app.
For a firm that already runs PCLaw, has a bookkeeper who knows it, and is happy on-premise, staying put can be a perfectly sound decision. For a firm starting from scratch in 2026, it is rarely the first thing we would reach for.
CosmoLex is a cloud-native platform whose signature feature is full business accounting and trust accounting built directly into the product. Where Clio commonly leans on QuickBooks for the general ledger, CosmoLex aims to be the only financial system your firm needs, which appeals to owners who do not want to manage and reconcile two separate tools.
The trade-off is a smaller integration ecosystem than Clio and a somewhat narrower feature set at the edges. For a solo or small firm that values one login, one bill, and no separate accounting subscription, that is often an acceptable exchange.
Here is how we usually guide firms by size, assuming you are choosing fresh rather than inheriting a system.
Trust record-keeping in Ontario is governed by LSO By-Law 9, which covers financial transactions and records. It requires trust records to be kept for ten years plus the current year, and the book of duplicate cash receipts to be kept for at least the six years preceding the most recent fiscal year end. All three products can be configured to support that record-keeping and the reconciliation that goes with it, and any system you choose has to hold the history for that long and let you produce it on request. Two things are worth stating plainly. First, software supports compliance, it does not create it: your books are only as clean as the way your team enters and reconciles them. Second, no vendor should be treated as a guarantee of compliance, and the responsibility stays with the firm and its licensees.
If you want that side handled properly, that is the core of our legal IT services for law firms: setting up the practice management system, wiring trust accounting correctly, and putting the security and backups around it that a firm holding client money should have.
Because we work across Clio, PCLaw, and CosmoLex, we can give you a straight recommendation rather than selling you the one product we happen to resell. We help firms pick the right platform, migrate cleanly from an old system, configure trust accounting, and lock down security and MFA. If you are weighing these three and want a second opinion grounded in real migrations, get in touch with DASTech and we will reply within one business day.
For most small firms starting fresh, yes, mainly because Clio is cloud-native with no server to maintain and connects to far more tools. PCLaw still wins for an established firm that wants deep on-premise accounting and already has a bookkeeper who knows it.
Yes. CosmoLex builds both trust accounting and full business accounting into the product, so you generally do not need a separate accounting subscription like QuickBooks to keep your general ledger.
Usually yes. Matters, contacts, and financial history can be migrated, though the detail and mapping of trust and accounting records need care. We treat this as a planned project so nothing is lost and your trust ledgers reconcile after the move.
No. All three can support the record-keeping set out in LSO By-Law 9, including the requirement to retain trust records for ten years plus the current year, but compliance depends on how your firm enters and reconciles data. The responsibility stays with the firm.
Pricing shifts and depends on tier and firm size, so we will not quote figures here. As of July 2026, cloud legal practice management is generally billed per user per month, so get current quotes from each vendor and compare the total cost including any separate accounting subscription, migration work, and the tier you actually need for trust accounting. The cheapest headline price is often not the cheapest firm-wide total.
