Trust accounting expertise is the most important qualification. Law firms have IOLTA requirements that general bookkeepers rarely understand. Your bookkeeper needs to know how to perform three-way reconciliations between your bank statement, trust ledger, and individual client ledgers. They need to understand that client funds cannot mix with operating funds under any circumstances. Getting this wrong can result in State Bar disciplinary action, so this is not something you want someone learning on your account.

Look for experience with legal practice management software. Most firms use Clio, MyCase, PracticePanther, or similar tools for timekeeping and billing. A bookkeeper who knows how to integrate these with QuickBooks Online can pull invoices and payments automatically, reducing duplicate entry and catching discrepancies. Someone unfamiliar with legal software will spend your money learning systems they should already know.

Ask about their understanding of law firm billing. Retainers require specific handling because the money isn’t earned revenue until you do the work. Client costs need proper tracking for reimbursement. Flat fees and hourly billing each create different timing issues for when revenue hits your books. A bookkeeper from other industries might record a retainer deposit as income immediately, which is both inaccurate and potentially a trust accounting violation.

Law firm trust accounting requires monthly reconciliation at minimum. Your bookkeeper should be proactive about this rather than treating it as optional cleanup. Ask candidates how often they reconcile trust accounts and what their process looks like. If they seem unsure or treat it like any other bank account, move on.

Communication style matters for law firms specifically. You need someone who responds quickly when you have questions about whether a transaction should come from trust or operating. A bookkeeper who takes days to reply or only surfaces at quarter end won’t help you avoid problems in real time.

Ask for references from other attorneys. Generic small business bookkeeping in Los Angeles doesn’t prepare someone for the compliance requirements lawyers face. A bookkeeper who works with multiple law firms will have systems already in place, understand common issues like retainer replenishment and cost advances, and won’t need you to explain the basics of how legal billing works.

Finally, check for relevant certifications. Clio certification indicates familiarity with the most common practice management platform. QuickBooks ProAdvisor status shows accounting software competency. Neither certification guarantees quality, but they demonstrate the person has invested in learning tools that matter for your practice.