The verdict in three sentences
A consulting or HR-services partner loses margin exactly where they measure nothing: staffing by instinct, time logged late, project profitability known too late. PSA (Professional Services Automation) software fixes this — USD 35 to 100 per consultant per month on the market, or USD 70 000 to 165 000 for a custom build, delivered in 4 to 7 months. The quantified stake: gaining ~10 points of utilization, the number-one lever of a firm's profitability.
PSA modules and their value
A PSA links the sales opportunity to the invoice, via staffing and time. Here is the expected coverage and its 2026 order of magnitude.
| Module | Key function | Market price (USD/user/mo) | Custom build (USD) |
|---|---|---|---|
| Staffing & capacity | Assignment, workload plan | 11-28 | 17 000-39 000 |
| Timesheets | Time entry, approval | 9-22 | 13 000-31 000 |
| Project profitability | Margin, budget vs actual | 9-28 | 17 000-44 000 |
| Billing | Fees, T&M, fixed price | 7-22 | 13 000-33 000 |
| Pipeline & forecast | Opportunities, staffing forecast | included | 11 000-28 000 |
The custom column cumulatively fits the USD 70 000-165 000 range depending on depth and payroll/billing integrations.
Market PSA vs custom
A 40-consultant firm at USD 68/user/mo pays USD 32 640/year, i.e. USD 97 920 over 3 years — before premium modules. Custom becomes competitive as soon as your staffing processes leave the standards.
| Criterion | Market PSA | Custom Kolonell build |
|---|---|---|
| 3-year cost (40 consultants) | ~USD 98 000-145 000 | USD 70 000-165 000 once |
| Time to deploy | 3-8 weeks | 4-7 months |
| Payroll/billing integration | limited connectors | full |
| Bespoke staffing rules | rigid | tailored |
| Utilization gain | +3-6 pts | +8-12 pts |
Mini case study
Take Sophie, partner at a 45-consultant HR-consulting firm in Lyon. Before the project, average utilization capped at 68% and time was logged at month-end, distorting margin. Kolonell delivered a custom PSA at USD 128 000 in 6 months, with predictive staffing and mobile timesheets. Result over 12 months: utilization raised to 78%, i.e. +10 points. On an average day rate of EUR 850 and 45 consultants, those 10 points represent roughly EUR 765 000 of additional billable output per year. The custom build pays back in under 3 months.
FAQ
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How much does project management software cost for a firm?
With a market PSA, USD 35 to 100 per consultant per month; for 40 consultants that is USD 16 800 to 48 000/year. Custom, USD 70 000 to 165 000 once.
Why is utilization the key KPI?
Because it measures the share of consultant time that is billed. Gaining 10 points on 40 consultants at EUR 850 day rate is hundreds of thousands of euros of annual output.
Can we integrate our billing and payroll?
Yes with custom: the PSA connects to your billing tool and payroll to avoid double entry and make per-project margin reliable.
What is the implementation timeline?
Budget 4 to 7 months for a full custom PSA, starting with a pilot practice before a firm-wide rollout.
Will consultants adopt timesheets?
With fast mobile entry and automatic reminders, on-time entry usually exceeds 90% by the second month, versus 50-60% manually.
Let's scope your project. Tell us your consultant headcount, your integrations (payroll, billing) and your target budget (USD 70 000-165 000), and we'll frame a pilot. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
