The Consulting Industry's Billable Hours Problem
Consulting is a business built on selling time. Every hour a consultant spends on administrative work, internal coordination, or non-billable business development is an hour not generating revenue. Yet surveys consistently show that consultants at every level — from solo practitioners to partners at mid-size firms — spend substantial time on tasks that do not require their specialized expertise.
A 2025 study by the Association of Management Consulting Firms found that consultants across firm sizes reported spending an average of 32% of their working hours on non-billable activities, with administrative tasks, proposal coordination, and research compilation accounting for the largest portions.
For independent consultants billing at $200 to $500 per hour, each non-billable hour represents a direct revenue loss. Virtual assistants are helping consultants recapture that time — and the revenue attached to it.
Where VAs Create the Most Value in Consulting
Proposal and RFP Preparation
Responding to client proposals and RFPs requires significant time investment: researching the prospect, developing the approach narrative, formatting the document, compiling case studies, and coordinating input from multiple team members. VAs manage the proposal production process — gathering inputs, formatting documents, maintaining proposal libraries of reusable content, and tracking submission deadlines.
Research Compilation and Data Gathering
Consulting engagements often require substantial background research: industry data, competitor analysis, regulatory landscape summaries, and financial benchmarking. VAs compile and organize research from public sources, prepare structured briefing documents, and maintain research databases that consultants draw on across client engagements.
Client Deliverable Coordination
Delivering on time is a fundamental expectation in consulting. VAs help project managers track deliverable deadlines, coordinate input collection from client stakeholders, manage review cycles, and handle the logistical coordination of workshops, presentations, and client working sessions.
Business Development Administration
Building a consulting practice requires consistent outreach, follow-up, and relationship management. VAs manage the CRM infrastructure of business development — updating contact records, scheduling follow-up calls, drafting outreach emails for consultant review, compiling meeting prep notes, and tracking pipeline activity.
Financial and Administrative Operations
Billing, invoicing, expense reporting, and engagement letter management are necessary but non-revenue-generating functions. VAs handle these administrative processes, ensuring invoices go out on time, expenses are logged accurately, and engagement administration stays current without requiring consultant attention.
The ROI Calculation Is Straightforward
If an independent consultant bills at $250 per hour and currently spends 12 hours per week on administrative work, that represents $3,000 per week — or $156,000 per year — in potential foregone billing. Even if half of that administrative time cannot realistically be billed to clients, the opportunity cost is substantial.
VA support for consulting administrative functions typically costs $15,000 to $28,000 annually. The math on ROI is compelling even under conservative assumptions about how much non-billable time is recovered and converted to billable work.
For consulting firms with multiple practitioners, the leverage is even greater — a single skilled VA supporting three to five consultants can deliver outsized operational value relative to cost.
Selecting a VA for Consulting Work
Consulting VAs perform best when they have strong writing and formatting skills, are comfortable working from incomplete information and asking clarifying questions, and can manage multiple concurrent work streams without close supervision.
The onboarding investment for a consulting VA is typically modest — two to four weeks to learn firm-specific templates, preferences, and processes — after which the engagement becomes largely self-directing.
Consulting firms and independent practitioners can find experienced administrative VAs through providers like Stealth Agents, which places VAs with professional services clients across strategy, operations, and management consulting practices.
The Strategic Argument
In consulting, reputation is built on the quality of thinking and the reliability of delivery. Virtual assistants do not improve the quality of a consultant's thinking — but they remove the administrative friction that prevents that thinking from reaching clients on time, in well-packaged form, and at full value.
Sources
- Association of Management Consulting Firms, Consultant Productivity Study, 2025
- McKinsey Global Institute, Professional Services Operations Benchmark, 2025
- U.S. Bureau of Labor Statistics, Management and Professional Services Employment, 2025