How to Bill When One Meeting Covers Multiple Matters

You finish a ninety-minute meeting with a commercial client. During that meeting, you discussed the progress of their current dispute, reviewed a new lease they want to enter, and briefly covered an employment issue with a departing senior employee. Three distinct matters. One block of time. How do you bill it?

This scenario happens constantly in Australian law firms, especially with commercial and corporate clients who instruct the same firm across multiple matters. The question of how to allocate time fairly, accurately, and ethically across multiple matters is one that many lawyers handle inconsistently — and poor handling leads to write-offs, client complaints, and potential compliance issues under the Australian Solicitors Conduct Rules.

The Ethical Framework: Rule 12 and Fair Billing

The starting point for any billing decision in Australia is the Australian Solicitors Conduct Rules, particularly Rule 12, which prohibits a solicitor from charging a client more than is fair and reasonable for the work performed. When splitting time across multiple matters, the core obligation is that the total time billed across all matters must not exceed the actual time spent in the meeting.

If a meeting lasted ninety minutes and covered three matters, the sum of time allocated to those three matters must equal ninety minutes — not more. Billing each matter for the full ninety minutes would constitute double billing, which is a disciplinary offence. This sounds obvious, but it happens more often than firms like to admit, particularly when different lawyers are recording time against different matters from the same meeting without coordination.

The Legal Profession Uniform Law adds another layer: sections 172 to 175 require that billing be transparent and that clients receive sufficient information to assess the reasonableness of charges. When a client sees a billing entry, they should be able to understand what work was done on their specific matter — not wonder whether they are subsidising work performed for another client's matter discussed in the same meeting.

Three Approaches to Multi-Matter Time Allocation

There are three common approaches to allocating time across multiple matters, and each has trade-offs.

The proportional allocation approach divides the total meeting time based on how much time was actually spent on each topic. If thirty minutes of a ninety-minute meeting was spent on the lease review, that matter gets 0.5 hours. If fifty minutes was spent on the dispute, that matter gets 0.8 hours (rounded to the nearest six-minute unit). If ten minutes was spent on the employment issue, that matter gets 0.2 hours. The entries should reflect what was specifically discussed in each segment: "Attendance at conference with client to review draft lease for premises at 42 George Street; discussion of make-good obligations and option to renew provisions."

This is the most accurate and defensible approach, but it requires the lawyer to have a clear sense of how the meeting time broke down — something that is difficult to reconstruct after the fact if notes were not taken.

The primary matter approach allocates most or all of the time to the primary matter discussed, with only incidental time charged to secondary matters. If the meeting was primarily about the dispute (seventy minutes) with brief updates on the lease (fifteen minutes) and the employment issue (five minutes), the lawyer might record the full time against the dispute and absorb the lease and employment time as part of the general client relationship. This avoids the complexity of splitting but means some billable work goes unrecorded.

The agenda-based approach structures the meeting with a pre-set agenda that allocates specific time blocks to each matter. The lawyer opens the meeting by saying "We have thirty minutes for the dispute update, thirty minutes for the lease, and fifteen minutes for the employment question." This creates a natural framework for time allocation and gives the client transparency about how their meeting time — and therefore their money — is being spent.

Practical Tips for Accurate Multi-Matter Billing

Take contemporaneous notes with timestamps or topic transitions marked. Even a simple notation like "10:30 — moved to lease discussion" provides the anchor point needed to allocate time accurately after the meeting ends.

Create separate time entries for each matter immediately after the meeting, while the time breakdown is still fresh. If you wait until the end of the day — or worse, the end of the week — you will either overestimate the time on the matter you remember best or give up and record everything against a single matter.

Use distinct billing descriptions for each entry. A split billing entry that says "Attendance at multi-matter conference with client" on all three matters provides no value to the client and no protection to the firm. Each entry should describe the specific topic and outcome relevant to that matter.

Coordinate with other attendees. If both a partner and an associate attended the meeting, they need to align on which matters they record time against and ensure the total recorded time is consistent. Two lawyers independently recording the full meeting time against the same matter doubles the apparent cost to the client.

The Same-Client vs Different-Client Distinction

Multi-matter billing becomes more complex when the matters involve different clients. If you meet with a property developer and discuss both their personal estate planning and a development joint venture with another party, the split billing implicates not just accuracy but confidentiality. The billing entry for the joint venture matter should not reveal details about the estate planning discussion, and vice versa.

This is less common than same-client multi-matter meetings, but it arises in practice — particularly in small and mid-size firms where partners act for related parties. The key is to treat each client's billing as completely separate, with descriptions that reference only information relevant to that client's matter.

How Recording Meetings Solves the Allocation Problem

The fundamental difficulty with multi-matter billing is reconstructing how time was spent after the meeting ends. Recording meetings — with appropriate client consent — eliminates this problem entirely. A recording provides an objective, timestamped record of when each topic was discussed and for how long.

AI billing tools can process these recordings and automatically generate separate time entries for each topic discussed, allocating the time proportionally and creating specific descriptions for each matter. The lawyer reviews the suggested entries for accuracy rather than trying to reconstruct the time split from memory. This is faster, more accurate, and produces entries that are defensible if ever challenged.

Frequently Asked Questions

Is it ethical to charge a minimum six-minute unit for a brief mention of a matter in a multi-matter meeting?

If substantive work was discussed — even briefly — it is reasonable to record a minimum unit (0.1 hours) against that matter. The six-minute unit is the smallest billing increment in Australian practice, and a genuine discussion of a client's matter, however brief, constitutes attendable work. However, a passing mention with no substantive content — such as "we should catch up on the Smith matter sometime" — should not generate a billing entry.

How should I handle multi-matter meetings where the client has a costs cap or fixed fee on one matter?

Record the time accurately against each matter regardless of the fee arrangement. For the fixed-fee matter, the time should still be recorded for internal tracking purposes even if it does not generate an additional charge to the client. This ensures accurate profitability analysis and helps the firm assess whether the fixed fee is appropriate for future similar matters.

What if I cannot remember how the time broke down across matters?

If you genuinely cannot reconstruct the time allocation — which happens when entries are recorded days after the meeting — the safest approach is to allocate the majority of time to the primary matter discussed and record conservative estimates for secondary matters, ensuring the total does not exceed the actual meeting duration. Going forward, record entries immediately after the meeting or use a recording to provide an objective reference.