CosmoLex vs MyCase: Which Is Better for Small Firms?

CosmoLex vs MyCase at a Glance

CosmoLex and MyCase are priced nearly 3x apart for a reason — they are not the same type of product. MyCase is a practice management tool with billing and a client portal. CosmoLex is a combined practice management and legal accounting platform designed to replace QuickBooks alongside your matter management.

Firms evaluate both primarily because they’re both marketed at small law practices. The comparison matters when a firm is deciding whether to invest in a comprehensive accounting-integrated solution or a lean, affordable tool that covers the practice management basics.

Pricing Comparison

As of March 2026:

CosmoLex: $119/user/mo starting price, $149+/user/mo at higher tiers. Annual or monthly billing. No multi-year contract.

MyCase: Basic $39/user/mo (no trust accounting), Pro $79/user/mo (trust accounting included), Advanced $99/user/mo. Month-to-month standard.

For a 5-attorney firm: CosmoLex costs $595-745/month. MyCase Pro costs $395/month — a difference of $200-350/month. However, firms moving to CosmoLex can cancel their QuickBooks subscription, which typically runs $50-150/month for a small firm. Adjusted for that, the gap narrows to $50-300/month depending on the QuickBooks plan.

Key Differences

Built-in accounting: CosmoLex includes a full general ledger — accounts payable, accounts receivable, expense tracking, bank reconciliation, and payroll. Law firms using CosmoLex do not need QuickBooks. MyCase covers billing and invoicing but does not include firm-level accounting. Firms on MyCase still need a separate accounting tool to track overhead, payroll, and general finances.

Trust accounting depth: Both include IOLTA. CosmoLex’s trust accounting is more complete — it integrates with the general ledger, includes reconciliation tied to trust account transactions, and generates reports formatted for bar compliance audits. MyCase Pro’s trust accounting is adequate for most small firms but does not connect to broader accounting records.

Onboarding speed: MyCase is substantially faster. Most firms report being operational within a few days. CosmoLex requires setting up a chart of accounts, migrating financial history, and configuring accounting alongside matter data. Budget weeks, not days, for a clean CosmoLex implementation.

Client portal: MyCase’s client portal is available on every plan including Basic, and is rated as one of the better client portals in the category. CosmoLex includes client communication tools, but user reviews on the portal experience are more mixed.

Price: For firms that don’t need full accounting, MyCase Pro at $79/user/month is difficult to beat. For firms that would pay for both a practice tool and QuickBooks, CosmoLex’s consolidated pricing deserves a direct comparison.

What About CaelusLaw?

CosmoLex’s accounting depth is its genuine advantage and nothing in this comparison takes that away. MyCase’s simplicity and price are real strengths for firms that don’t need a full accounting system.

CaelusLaw is built for the middle: small firms that want IOLTA trust accounting included without the complexity of a full accounting platform and without the cost of CosmoLex. Essentials plan at $20/user/month. Month-to-month. No separate QuickBooks-equivalent included — but for most 1-20 attorney practices, that’s not the gap that needs filling.

Verdict

CosmoLex is the right choice for firms that want to eliminate QuickBooks and need the deepest possible IOLTA compliance tools. MyCase is the right choice for firms prioritizing affordability, client communication, and a short learning curve. At 3x the price, CosmoLex needs to deliver operational savings elsewhere — and it does, if the firm is currently paying for both a practice tool and an accounting tool. CaelusLaw ($20/user/month) is the middle path: IOLTA included, no accounting complexity, no contract.