The verdict in three sentences
For an HR consulting firm, generic PSA tools at 35-70 USD/user/month handle project tracking but rarely fit your staffing and margin model. A custom build (45 000 to 95 000 USD) steers engagements, time, consultant staffing, per-engagement margin and billing in one tool. Result: utilization +12 points, 8 hours saved per month per consultant, ROI in 15 months.
Generic PSA vs custom
Market PSA is fast to deploy but imposes its model; custom mirrors your margin steering.
| Item | Generic PSA | Custom Kolonell build |
|---|---|---|
| Entry cost | 0 to 5 000 USD | 45 000 to 95 000 USD |
| Monthly cost | 35 to 70 USD/user | Maintenance 15 %/yr |
| Year 1 (15 consultants) | 6 300 to 12 600 USD | 45 000 to 95 000 USD |
| Year 3 cumulative (15 users) | 18 900 to 37 800 USD | 58 500 to 123 500 USD |
| Per-engagement margin | Standard | Custom, real time |
| Consultant staffing | Generic | Fits your rules |
| Code ownership | No | Yes |
The profitability levers
The gain concentrates on utilization and margin steering. Estimate for a 15-consultant firm (2026 order of magnitude).
| Lever | Before | After |
|---|---|---|
| Utilization rate | 72 % | 84 % (+12 pts) |
| Hours saved/month/consultant | - | 8 h |
| Per-engagement margin | seen after the fact | steered in real time |
| Billing cycle | 30 days | 15 days |
| Additional revenue (utilization) | - | about 250 000 USD/year |
Mini case study
Monica, managing director of a 15-consultant HR consulting firm in Miami, ran a generic PSA. Utilization was stuck at 72 % for lack of availability visibility. She invests 72 000 USD in a custom tool (engagements, time, staffing, margin, billing). Utilization rises to 84 % (+12 points): at an average 900 USD daily rate across 15 consultants, those 12 points represent about +250 000 USD/year of billable revenue, plus 8 h/month/consultant. ROI lands in 15 months, including 10 800 USD/year maintenance.
FAQ
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How much does custom HR consulting software cost in Miami in 2026?
From 45 000 to 95 000 USD depending on scope (engagements, time, staffing, margin, billing), with maintenance around 15 %/year of the build.
How is it different from a generic PSA?
A generic PSA is faster and cheaper to start. Custom becomes worthwhile once your per-engagement margin steering and staffing rules are specific.
How does utilization improve?
Real-time visibility on availability and skills lets you staff consultants faster; a 12-point gain is realistic for an under-tooled firm.
What is the build timeline?
Three to five months from scoping to production, with time tracking and staffing delivered first.
Can margin be steered per engagement in real time?
Yes: reconciling logged time, daily rates and consultant costs yields margin engagement by engagement, with no manual reporting.
Let's scope your project. Share your consultant count, average daily rate and current utilization, and we will price an engagements + time + staffing + margin scope with an indicative 45 000-95 000 USD budget. 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.
