Legal Technology

Law Firm Billing & Time-Tracking Software — Capture Every Billable Hour

Law firm billing and time-tracking software — capture time against matters, bill hourly/retainer/fixed, manage disbursements and keep client (trust) accounts separate.

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Wizix Team
Jul 29, 2026 · 8 min read
Law firm billing and time-tracking software
Key takeaways
  • In law, time is the product — hours not captured are income lost forever.
  • Billing must handle hourly, retainer and fixed-fee models plus disbursements.
  • Client (trust) accounts must stay separate from firm funds, always.

For most law firms, time literally is the product — and yet billable hours are the most commonly lost asset in the profession. A call taken on the move, a quick review between hearings, research done late at night: if it isn't captured, it can't be billed, and that income is gone. Billing and time-tracking software makes capturing time effortless and turns it into clean, defensible invoices.

General information, not legal advice

This article covers billing software and practice management, not professional-conduct or fee rules. Follow the applicable Bar Council and court rules.

Why billable hours leak

When time is reconstructed from memory at month-end, small tasks are forgotten and estimates are conservative — lawyers under-bill themselves. Capturing time as work happens, against the right matter, closes that gap and produces invoices clients trust because they're detailed and accurate.

What the software handles

  • One-tap time capture against matters and activities
  • Hourly, retainer and fixed-fee billing models
  • Disbursements and reimbursable expenses
  • Draft, review and approve invoices before they go out
  • Client (trust) account accounting kept separate from firm funds
  • Receivables, ageing and lawyer-wise productivity reports
Detailed invoices get paid faster

Clients query vague bills and pay them late. An itemised invoice — time, task and matter clearly shown — gets approved and paid faster, and builds trust.

Built around your fee models

Every firm bills differently — pure hourly, monthly retainers, fixed fees per matter, or a mix. Wizix builds billing tailored to your models and rate cards, with client-account separation and the reports partners need to see productivity and receivables at a glance.

Can it handle retainers and fixed fees, not just hourly?

Yes — hourly, retainer and fixed-fee models are all supported, including mixed arrangements per client or matter.

Does it keep client (trust) money separate?

Yes, client/trust account funds are tracked separately from firm funds, in line with good accounting practice.

Can partners see who is billing what?

Yes — lawyer-wise time, billing and receivables reports give partners clear visibility.

See effortless time capture and clean billing on your own fee models — book a free Wizix demo. (General information only; not legal advice.)

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Wizix Team

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