Time Tracking for Law Firms: Best Practices That Actually Work

Time is the inventory of a law firm. Every hour that isn't tracked is revenue that can't be billed. Yet industry surveys consistently find that attorneys capture only 80–85% of their billable time — meaning a $400/hour attorney leaves $60–$80 per day on the table from incomplete time records alone. Good time-tracking practices aren't bureaucratic overhead: they're the most direct way to increase revenue without adding clients.

The Cost of Imprecise Time Records

Beyond the revenue impact, vague or reconstructed time entries invite billing disputes. Clients — and their auditors — look at invoice line items like "legal services" and push back. Specific entries like "Drafted motion to exclude expert testimony; reviewed opposing expert report" are rarely challenged because they're verifiable and demonstrate value.

Capture Time as You Go, Not at Day's End

The most impactful change any attorney can make is contemporaneous time entry — recording time as you finish each task rather than reconstructing the day at 5pm (or worse, at billing time). Studies consistently show that attorneys who reconstruct time entries at the end of the day capture 15–30 minutes less per day than those who record in real time.

Contemporaneous entry is also an ethics best practice. The ABA's Model Rules require that lawyers charge reasonable fees — and courts and bar committees have found that reconstructed time entries, especially when disputed, don't demonstrate reasonableness as well as contemporaneous records.

Write Entries That Won't Be Written Down

The description on a time entry is what clients pay for — or push back on. Entries that tend to survive billing review:

• Identify the document or proceeding specifically ("Reviewed defendant's motion for summary judgment")
• Name the action taken ("Drafted," "Revised," "Researched," "Conferred with client re:")
• Connect to a visible deliverable when possible ("Drafted settlement demand letter, 4 pages")

Entries that get written down:

• "Legal services" — tells the client nothing
• "Research" — research on what issue? For what purpose?
• "Review correspondence" — what correspondence, and what was the action taken?
• Round numbers on every entry (0.5, 1.0, 2.0) — suggests reconstruction, not real-time capture

Set a Minimum Time Increment and Stick to It

Most firms bill in 0.1-hour (6-minute) increments. The question is whether to capture time below the minimum and round up, or simply ignore micro-tasks. The right answer for most firms is to capture everything in 0.1-hour increments, with a floor of 0.1 hours for any client-related activity — a two-minute email review gets billed as 0.1 hours.

What this does over time: an attorney who ignores eight 2-minute client emails per day is writing off 16 minutes of billable time. At $400/hour that's $106 per day, $500 per week, $26,000 per year. Per attorney.

Matter Budgets and the Write-Down Problem

For matters with budget agreements, track time against the budget in real time — not after the fact when you've already gone over. When you're at 80% of budget, that's the time to have the conversation with the client, not when you're at 150%.

In BaseLedgerPro Legal, every matter has a budget field. Time entries post against the matter and you can see your burn rate at any time. When time billed approaches the agreed budget, the matter flags for attorney review so you can either bill a progress invoice, renegotiate the budget, or manage scope going forward.

Expense Tracking: The Other Half of Matter Profitability

Time tracking alone gives you revenue — but not profitability. To know whether a matter is actually profitable, you need to track costs advanced on behalf of clients: filing fees, expert fees, deposition transcripts, court reporter charges, courier costs, and any other out-of-pocket expenses. These costs should be linked to matters as they're incurred so that when you bill for reimbursement, you have a documented record matching the invoice to the actual disbursement from your operating account (or, if you've advanced them from trust, from the appropriate client ledger).

Connecting Time Tracking to Billing

The best time-tracking system is one that flows directly into your billing workflow with no manual re-entry. In BaseLedgerPro Legal, time entries are linked to matter, attorney, activity type, and hourly rate. When you're ready to bill, you select unbilled entries for the matter, review and approve them, and generate an invoice — all from the same system. The trust disbursement (if the client has a retainer on account) or the invoice (for net-30 billing) is generated from the same records.

This eliminates the reconciliation step that trips up many firms: matching a time-tracking spreadsheet or standalone app to the billing system to the trust accounting — three systems that don't talk to each other and diverge every time someone forgets to post in one of them.