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Legal · head to head

CosmoLex vs Westlaw

CosmoLex logo

CosmoLex

Legal

Practice management with a full legal general ledger and trust accounting built in

From
$89/month
Rated
-
Full reviewWebsite
Westlaw logo

Westlaw

Legal

Thomson Reuters legal research platform, priced per seat with tiers from Edge to Advantage and negotiated enterprise contracts above 10 attorneys

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CosmoLex the built-in accounting suits a single law firm entity, so practices with multiple entities, payroll or unusual revenue recognition still need an external accountant and a second system.; Westlaw firms of 11 or more attorneys, which is most firms actually spending serious money on Westlaw, get no published price at all and negotiate blind against a sales team that sees every prior deal.
  • They diverge on capability: CosmoLex covers Built-in general ledger, Westlaw covers Case law and statute database.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which CosmoLex and Westlaw actually diverge.

Attributes where CosmoLex and Westlaw differ
AttributeCosmoLexWestlaw
Starting price$89/monthOn request
Pricing modelPer user per monthquote

Identical on both: free tier (No), platforms (Web, iOS, Android), user rating (Not yet rated), category (Legal).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in CosmoLex

  • Built-in general ledger
  • Three-way trust reconciliation
  • Time and expense capture
  • Billing and LEDES
  • CosmoLex Pay
  • Matter management

Only in Westlaw

  • Case law and statute database
  • KeyCite
  • Practical Law
  • CoCounsel Legal
  • Litigation analytics
  • West Key Number System

What people use each for

The jobs each tool is most often brought in to do.

CosmoLex

  • A two to ten lawyer firm that wants to stop paying for and reconciling QuickBooks alongside its practice systemnot Westlaw
  • A firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standardnot Westlaw
  • A solo practice with no bookkeeper that needs the books to be correct without accounting knowledgenot Westlaw
  • A firm doing insurer defence work that must produce LEDES invoices without a separate billing toolnot Westlaw

Westlaw

  • A solo attorney or small firm wanting published, self-service pricing rather than a sales negotiationnot CosmoLex
  • A firm evaluating whether Practical Law and secondary sources justify moving from Edge to Advantagenot CosmoLex
  • A litigation team wanting KeyCite and litigation analytics in the same research platformnot CosmoLex
  • A firm that previously used Casetext and needs to understand that it must now buy CoCounsel Legal inside Westlaw insteadnot CosmoLex

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

CosmoLex

  • The built-in accounting suits a single law firm entity, so practices with multiple entities, payroll or unusual revenue recognition still need an external accountant and a second system.
  • Document management is basic storage rather than versioned matter-centric DMS, so firms with heavy document workflow outgrow it and bolt on something else.
  • The integration catalogue is materially smaller than Clio, so niche intake, e-discovery or automation tools often require manual export instead of a native connection.
  • Ownership sits with ProfitSolv alongside Tabs3, TimeSolv and Rocket Matter, and buyers have limited visibility into which brand receives investment over a three-year contract.
  • The interface and reporting feel dated next to newer competitors, and custom reporting in particular often means exporting to a spreadsheet.

Westlaw

  • Firms of 11 or more attorneys, which is most firms actually spending serious money on Westlaw, get no published price at all and negotiate blind against a sales team that sees every prior deal.
  • Casetext no longer exists as an independent, cheaper self-serve product; anyone who liked its pricing and simplicity now has to buy into the Westlaw ecosystem, typically at a higher, seat-based cost.
  • Multi-year contracts are structurally rewarded with the biggest discounts, which pressures firms into 2 or 3 year commitments before they know if usage will justify the tier chosen.
  • Content and features vary meaningfully between Edge and Advantage, so an apparently small monthly price difference can hide the absence of Practical Law, which many firms end up needing anyway.
  • Switching away from Westlaw means retraining staff on Lexis search syntax and the Key Number System has no direct Lexis equivalent, which is a genuine cost that suppresses competitive shopping at renewal.

Pricing, plan by plan

CosmoLex

$89/month
  • CosmoLex$89/month
    • Per user per month billed annually, higher month to month
    • General ledger and trust accounting included rather than sold as an add-on
    • Payment processing charged at card and bank transaction rates

Westlaw

On request
  • Westlaw Edge (solo and small firm, up to 10 attorneys)$undefined/month
    • Single-circuit coverage from roughly $107 to $155 a month
    • All-states-plus-federal coverage roughly $266 a month
    • 2-year contracts around 12% off list, 3-year around 18% off
  • Westlaw Advantage (firms of 11+ attorneys)$undefined/year
    • Bundles Practical Law and secondary sources
    • No published price, quote via sales representative
    • CoCounsel Legal available as a seat add-on, reported around $639 per seat per month

Which should you pick?

Choose CosmoLex if

  • You need built-in general ledger.
  • You work on Web, iOS, Android.
  • You also want three-way trust reconciliation.
CosmoLex review

Choose Westlaw if

  • You need case law and statute database.
  • You work on Web, iOS, Android.
  • You also want keycite.
Westlaw review

Questions people ask

Is CosmoLex or Westlaw better?
Neither clearly leads. CosmoLex starts at $89/month and Westlaw at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CosmoLex or Westlaw?
CosmoLex starts at $89/month and Westlaw at On request.
Does CosmoLex or Westlaw run on more platforms?
Both run on Web, iOS, Android, so platform support will not decide this one for you.
What is CosmoLex best used for?
CosmoLex is most often used for a two to ten lawyer firm that wants to stop paying for and reconciling quickbooks alongside its practice system, a firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standard, a solo practice with no bookkeeper that needs the books to be correct without accounting knowledge, a firm doing insurer defence work that must produce ledes invoices without a separate billing tool. Of those, a two to ten lawyer firm that wants to stop paying for and reconciling quickbooks alongside its practice system and a firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standard are not what Westlaw is typically brought in for.
What can CosmoLex do that Westlaw cannot?
CosmoLex covers Built-in general ledger, Three-way trust reconciliation, Time and expense capture, Billing and LEDES. Westlaw covers Case law and statute database, KeyCite, Practical Law, CoCounsel Legal.

Answered from the vendors’ own pages

CosmoLex: Do I still need QuickBooks?

No. CosmoLex carries its own general ledger and trust ledgers, which is the main reason firms choose it over Clio or MyCase.

Westlaw: Can I still buy Casetext?

No. Casetext was retired on 1 April 2025. Its AI functionality continues as CoCounsel Legal, sold only as part of the Westlaw ecosystem.

CosmoLex: Does it handle IOLTA compliance?

Yes. Trust ledgers, overdraft prevention and three-way reconciliation are in the core product rather than in a paid tier.

Westlaw: Why does Westlaw publish some prices but not others?

Self-service online pricing exists only for solo practitioners and firms up to 10 attorneys; larger firms are routed to a sales representative with no public rate.

CosmoLex: Who owns CosmoLex?

ProfitSolv, a private-equity backed group that also owns Tabs3, TimeSolv, ImagineTime and Rocket Matter.

Westlaw: What does CoCounsel Legal cost on top of Westlaw?

Reported figures put it around $639 per seat per month as an add-on, though this is not an official published rate and varies by contract.

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