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Legal Billing Summary

Produces privilege-safe U.S. corporate legal billing summaries from time and expense data. Converts entries into client-friendly narratives with categorized hours, rates, expenses, and milestones while enforcing engagement-letter rules and ethical billing safeguards. Use when asked to create a billing summary, invoice narrative, timekeeper breakdown, expense summary, or fee narrative.

ID: us.general.billing-summary Version: 0.1.1 License: Apache-2.0 Author: CaseMark Language: en Added: 2026-06-12
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Legal Billing Summary

Generate a client-ready billing narrative that explains fees and expenses clearly while preserving privilege.

Required Inputs

  1. Billing period (start/end dates), matter name, client name
  2. Time entries: timekeeper, rate, hours, description, date
  3. Expense entries: date, vendor, description, amount
  4. Engagement letter or billing guidelines (rates, caps, task codes, prohibited expenses)
  5. Milestones or phase labels (if any)
  6. Write-downs, discounts, or adjustments (if any)

Output Structure

Populate every section below.

1. Header

Matter | Client | Billing Period | Responsible Attorneys | Billing Guidelines Reference

2. Executive Overview

3-6 sentences on the period's major workstreams and outcomes, plus a totals table:

Metric Amount
Fees $
Expenses $
Total $
Discount/Write-down $
Net Total $

3. Timekeeper Summary

Timekeeper Role Rate Hours Fees Notes

Notes column: explain scope (e.g., "board governance research," "drafted consent resolutions").

4. Task Category Breakdown

Default categories (override with client task codes if provided):

  • Research and Analysis
  • Drafting and Document Production
  • Client Communications
  • Internal Strategy and Case Management
  • Negotiation and Counterparty Communications
  • Regulatory/Compliance Work
  • Filings and Formalities
  • Other (define clearly)
Category Hours Fees Narrative

Narrative: explain purpose and outcome in plain English; never reveal legal advice or strategy.

5. Phase View (optional, recommended for long periods)

Phase / Milestone Dates Key Work Performed Fees

6. Expenses

Date Category Vendor Description Amount Justification

Include subtotals for material categories (filing fees, expert/consultant, travel).

7. Adjustments and Compliance

  • List write-downs, caps applied, or policy-driven exclusions.
  • Note block-billed entries and how they were separated.
  • Confirm compliance with client billing guidelines.

8. Forward Look (optional)

2-4 sentences on expected next-period activities and cost drivers.

Privilege and Billing Safeguards

  • Protect privilege: never include legal advice, mental impressions, or litigation strategy.
  • Be specific: avoid vague phrases like "legal research" — always name the topic.
  • Tie work to objectives: connect entries to matter goals or compliance requirements.
  • Show policy compliance: rates, caps, task codes, approved expenses.
  • Flag anomalies: unusual expenses, staffing changes, large time spikes.
  • No duplicate billing: do not overlap timekeeper entries for the same task without explanation.
  • No administrative padding: exclude admin tasks unless guidelines permit.
  • Stay consistent: narrative must match time entry descriptions and invoice totals.

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