The verdict in three sentences
An audit firm that structures its engagement management turns unbilled hours into margin: the main lever is a realization rate lifted by 10 points. In 2026, a custom tool combining timesheets, budgets and dashboards costs 35,000 to 80,000 EUR and ships in 3 to 5 months. For a partner, the return is measured first in real-time visibility on each file's profitability.
Why a dedicated tool rather than a spreadsheet
The shared spreadsheet quickly hits its limits: late time entry, frozen budgets, no alert when an engagement drifts. An engagement-management tool links the sold budget, the hours actually spent and the billing, to catch overruns as early as possible. That link protects margin, not chart aesthetics.
| Module | Content | Profitability impact |
|---|---|---|
| Timesheets | Mobile entry, manager approval | Reliable real costs |
| Engagement budgets | Sold vs consumed hours | Early drift detection |
| Billing | Progress statements, fee notes | Faster realization |
| Dashboard | Margin per engagement/partner | Staffing decisions |
| Alerts | 80 %/100 % budget threshold | React before the loss |
What the tool costs and returns in 2026
The budget depends mostly on the number of connectors (payroll, accounting, calendar) and the depth of reporting. Here is a 2026 order of magnitude for a mid-sized firm.
| Scope | Build budget | Timeline | Target |
|---|---|---|---|
| Timesheets + budgets | 35,000-45,000 EUR | 3 months | Small firm |
| + Billing + dashboards | 50,000-65,000 EUR | 4 months | Mid firm |
| + Connectors + staffing forecast | 70,000-80,000 EUR | 5 months | Structured firm |
| Annual maintenance | 15-18 % of build | Ongoing | All |
ROI shows in realization: a firm billing 3,000,000 EUR in fees, with a realization rate moving from 78 % to 88 %, recovers 300,000 EUR of actually collected revenue without selling a single extra engagement.
Mini case study
Mr. Rey, partner of a 30-person audit firm in Lyon, bills around 3,200,000 EUR a year but suspects lost hours on fixed-fee engagements. After deploying a 60,000 EUR tool, his reliable timesheets reveal that 80 % budget alerts trigger staffing reallocations. The realization rate gains 10 points, or 320,000 EUR of better-collected fees in the first year: the tool is paid back in about 3 months of net gain.
FAQ
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How much does a custom engagement-management tool cost in 2026?
Between 35,000 and 80,000 EUR depending on scope, with annual maintenance of 15 to 18 % of the build budget.
What profitability gain is realistic?
A credible target is +10 points of realization rate, which on 3,000,000 EUR of fees represents 300,000 EUR better collected.
How quickly is the tool operational?
A timesheets + budgets core ships in 3 months; the full version with connectors and staffing forecast in 5 months.
Will staff actually log their time?
Mobile entry and manager approval sharply increase the logging rate; the operational goal is entry within 48 h of the work done.
Can it integrate with our existing accounting tool?
Yes, via dedicated connectors (accounting, payroll, calendar), which are the main variable cost item in the budget.
Let's scope your project. Share your fee volume, your current realization rate and your existing tools, and we will cost the engagement-management tool suited to your firm. 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.
