The verdict in three sentences
For a statutory audit firm with 20 to 80 staff, a custom file review tool costs between 30,000 and 80,000 EUR excl. VAT in 2026, with a 4 to 6 month delivery. It makes sense when your audit software handles methodology well but handles review tracking, open points and sign-offs between partner, manager and quality reviewer poorly. Above 300 engagements a year, the supervision time saved and the audit trail inspectors expect (FRC in the UK, H2A in France) usually pay back the project within two or three audit cycles.
What inspectors check, and what your tool must record
During a quality inspection, the regulator checks that each file documents who reviewed what, when, and how raised points were cleared. ISQM 1 (UK and international) requires a quality management system, and ISA 230 requires the final file to be assembled within 60 days of the audit report. Most firms handle this with audit software, Excel open-point logs and email threads, which leaves gaps in traceability.
| Requirement | Common practice in 2026 | What the custom tool adds |
|---|---|---|
| Manager and partner review | Tick box in the software, no fine timestamp | Timestamped, signed review per file section |
| Open points | Shared Excel file | Central log, automatic reminders, status per engagement |
| Engagement quality review (EQR) | PDF memo attached | Dedicated workflow, report issue blocked until cleared |
| File assembly | Manual close | Lock at day 60 after the report, access log |
| Retention | Internal server | Six-year retention (UK: per FRC and firm policy), readable export for inspections |
| Quality indicators | Computed by hand | Dashboard: review lead times, open points per partner |
2026 pricing: off-the-shelf, add-on layer or full custom
The choice is not between buying everything and building everything. Most firms keep their audit software for methodology and working papers, then add a review management layer connected by API or import.
| Option (2026 order of magnitude, UK and EU market) | Upfront cost | Recurring cost | Lead time |
|---|---|---|---|
| Off-the-shelf audit software alone | 2,000 to 10,000 EUR setup | 60 to 150 EUR per user per month | 1 to 3 months |
| Shared spreadsheet + internal procedures | Close to zero | 2 to 5 h of supervision lost per engagement | Immediate |
| Custom review module (add-on layer) | 30,000 to 50,000 EUR | 15 to 20% of build per year in maintenance | 4 months |
| Full custom quality platform | 50,000 to 80,000 EUR | 15 to 20% of build per year | 5 to 6 months |
| SSO and firm directory integration | 3,000 to 8,000 EUR | Included in maintenance | 2 to 4 weeks |
| Certified UK or EU hosting (option) | 1,000 to 3,000 EUR | 300 to 1,200 EUR per month | 2 weeks |
For 50 users, a 100 EUR monthly licence already costs 60,000 EUR a year. The custom module does not replace that licence: it cuts supervision time and makes inspections safer.
The minimum specification
A sound scope fits in about ten screens: engagement portfolio with statutory deadlines, engagement page by phase (planning, interim, final), open-points log, three-level review workflow, EQR memo, completion checklist, 60-day lock and partner dashboard. Add fine-grained roles (trainees, seniors, managers, responsible individuals) and a tamper-proof audit log. The features that blow budgets are rewriting working papers and client accounting connectors: keep those in your existing software.
Mini case study
Antoine, partner in a 45-person audit firm in Paris (illustrative case), signs 380 engagements a year. His managers estimate they lose 3 hours per engagement chasing open points and rebuilding review history before sign-off. At an internal cost of 90 EUR per hour, that is 380 x 3 x 90 = 102,600 EUR per year. A custom review module at 55,000 EUR plus 9,000 EUR of annual maintenance that recovers only half of that time (51,300 EUR) pays back in under 15 months, before counting the lower risk of sanctions after an inspection.
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FAQ
Will a custom tool be accepted during an FRC or H2A inspection?
Yes, provided each file stays complete, timestamped and locked after assembly. Regulators inspect content and traceability, not the software brand. Plan a readable export of each file, retained for at least six years.
How long until we are operational?
Allow 4 months for a review layer and 5 to 6 months for a full quality platform. A pilot on 20 to 30 engagements during an interim season limits risk before busy season.
Do we have to drop our current audit software?
Rarely. In most cases, the firm keeps its software for methodology and adds a management layer. That avoids paying twice to migrate working papers.
What maintenance budget should we plan?
As an order of magnitude, 15 to 20% of the build cost per year, so 4,500 to 16,000 EUR depending on scope. That covers regulatory changes, security and technical updates.
What about client data confidentiality?
UK or EU hosting, encryption at rest, strong authentication and an access log are the minimum. UK GDPR or EU GDPR and professional secrecy also require a clear data processing agreement with the vendor.
Let's scope your project. Send us your number of engagements, users and current software: we will price the scope, budget and timeline of your review module. 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.
