Consulting Firm Project & Time Software Cost (2026)

The verdict in three sentences

For a firm under 20 consultants, a market PSA (Boondmanager, Kimble) is the best starting point at 20-40 EUR/month/consultant. Beyond 25-30 consultants, or as soon as your staffing and billing model breaks the standard mold, a custom tool at 35,000-85,000 EUR pays back in 3 to 4 years. The real lever isn't the license price, it's utilization: gaining 5 points across 30 consultants is worth far more than the subscription.

Market PSA or custom: the real math

A PSA (Professional Services Automation) covers staffing, time entry, actuals-based billing and margin tracking. Market leaders sit in a clear range. Custom becomes relevant when your business rules (day-rate grids by seniority, multi-entity rebilling, fixed-price provisioning) spill outside the standard.

On custom, budget depends on scope: a staffing + time + billing core fits in 35,000-50,000 EUR; adding per-project margin tracking, capacity forecasting and a client portal pushes toward 70,000-85,000 EUR.

4-year amortization: license vs build

The partner's question isn't "what does the software cost" but "what's the full cost over its lifetime." Here's the 2026 order of magnitude for a 30-consultant firm.

At stable headcount over 4 years, the license stays cheaper in cash. Custom wins when (1) headcount grows — the build doesn't re-pay per head — and above all (2) it shifts a profitability metric. That's where the real ROI lives.

The hidden lever: +5 points of utilization

A senior consultant billed at 900 EUR/day, busy 210 days/year instead of 200, generates 9,000 EUR of extra revenue. Across 30 consultants, +5 utilization points (~10 more billed days each) is on the order of 270,000 EUR of additional annual revenue. A tool that surfaces forecast staffing, bench gaps and time-entry reliability in real time pays for its build in a single year on this lever alone.

Mini case study

Antoine, partner at a transformation consulting firm in Nantes, runs 28 consultants on Excel plus a consumer time tool. Problems: time entered at day +20, fuzzy average day rates, 3 fixed-price projects provisioned by guesswork. He invests 58,000 EUR over 18 weeks in a custom tool. Result over 12 months: utilization rose from 68% to 73% (+5 pts), i.e. ~9 more billed days per consultant at 850 EUR = 214,000 EUR of extra revenue. Full year-1 cost (build + maintenance): ~64,000 EUR. Positive ROI in year one, before even counting fewer billing delays.

FAQ

Isn't a standard PSA enough in 80% of cases?

If your staffing and billing are classic, yes — Boondmanager at ~24 EUR/month/user covers the essentials. Custom is justified beyond 25-30 consultants, or when one specific business rule costs you hours every week.

How long to deploy a custom tool?

Budget 14 to 22 weeks depending on scope. A staffing + time + billing core ships in 14-16 weeks; adding per-project margin and a client portal adds 4-6 weeks.

Can it connect to our accounting software?

Yes. Exporting invoices and journal entries to accounting software (Sage, Cegid, or OHADA accounting) is a standard integration, budget 3,000-8,000 EUR depending on the API.

How do we measure ROI concretely?

Two metrics: utilization (each point is worth ~2 billed days/consultant/year) and billing lag (each week saved improves cash). Set a baseline before the project.

Do we own the code?

Yes, on a custom build you own the source code and the database, with no per-user license fee — the structural difference from a subscription PSA.

Let's scope your project. Tell us your consultant headcount, your staffing and billing rules, and an indicative budget: we'll frame the scope and the break-even point. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.