Case Study: Consulting Firm Cuts Billing Cycle from 45 to 12 Days | A Human Time
How a 20-person consulting firm reduced invoice disputes by 80%, cut their billing cycle from 45 days to 12, and improved utilization from 62% to 78%.
Consulting Firm — From Invoice Disputes to 12-Day Billing Cycles
Industry: Management Consulting | Size: 20 employees | Challenge: Billing disputes and slow invoicing eroding client trust and cash flow
The Challenge
Pace & Partners had built a strong reputation over eight years — sharp strategic thinking, reliable delivery, senior-level attention. But their back office told a different story. Every month, at least three or four invoices came back with questions. "We don't recognize these hours." "Can you break this down further?" "This doesn't match what we discussed."
The disputes weren't malicious. They were the natural result of a system that asked consultants to reconstruct their weeks from memory every other Friday, then expected clients to trust vague line items like "strategy work — 12 hours." The firm's billing cycle had ballooned to 45 days on average — and that was before accounting for the back-and-forth of disputed invoices, which could stretch resolution to 60 or 90 days.
Cash flow suffered. The founding partners found themselves chasing payments instead of chasing new business. Worse, the disputes were quietly damaging client relationships. One long-standing account explicitly cited "billing transparency" as a concern during their annual review. For a trust-based business, that stung.
Utilization was another blind spot. Partners suspected they were leaving capacity on the table — too much time spent on internal work, proposals that went nowhere, and "quick favors" for clients that never made it onto an invoice. But without reliable data, it was just a feeling.
The Solution
Pace & Partners adopted A Human Time with a specific goal: make every invoice defensible in under 30 seconds. If a client ever asked "what did we pay for?", anyone on the team should be able to pull up a clear, detailed record instantly.
A Human Time's natural-language time entries were the first win. Instead of forcing consultants to categorize hours into rigid codes, they could write entries like "Worked through the GTM pricing model with Sarah's team — explored three scenarios" and the system would handle categorization and client mapping. Entries read like a journal, not a timesheet — which meant clients could actually understand them.
The firm set up project-level budgets with gentle alerts. When a consultant hit 80% of a project's estimated hours, A Human Time surfaced a quiet nudge — not a hard stop, just a "heads up, you might want to loop in the project lead." This caught scope creep conversations early, before they became invoice surprises.
For invoicing, the team used A Human Time's client-ready export. Each invoice now included a clear narrative of work performed, broken down by week and workstream. Partners reviewed and approved invoices in minutes rather than hours, because the underlying data was already accurate and well-described.
The Results
- Invoice disputes: Reduced by 80% (from ~4 per month to fewer than 1 per month)
- Average billing cycle: 45 days → 12 days (invoices sent weekly, paid faster due to clarity)
- Billable utilization: 62% → 78% (identified and reduced unbilled client work and internal time sinks)
- Revenue captured from previously unbilled work: ~$15K/month in "quick favors" and scope additions now properly tracked and invoiced
- Client satisfaction (billing-specific NPS): +34 points over 6 months
Key Takeaway
For Pace & Partners, the transformation wasn't about tracking more hours — it was about tracking them honestly and legibly. When your time records tell a clear story, invoices stop being a source of friction and start reinforcing the value you deliver. Clients pay faster when they can see exactly what they're paying for.
The utilization gains were a bonus the firm didn't expect. By making time tracking painless enough that people actually did it in real-time, all that invisible work — the unbilled half-hours, the "quick calls" that turned into working sessions — finally became visible. Not to punish anyone, but to make sure the firm got paid fairly for the value it was already delivering.