In brief:
- SME digital transformation goes far beyond the tool itself: it encompasses document digitization, electronic invoicing, workflow integration, and team training over several months.
- In Extenso manages full integration: not just the tool purchase, but linking accounting-tax-payroll-legal chains and change management through a dedicated advisor who remains your single contact.
- The generalist firm offers a strategic advantage: when tool implementations (invoicing, payroll) intersect with tax considerations or company structure, there is no intermediary. Just fast answers.
- In Extenso: over 230 offices, 7,300 employees, national network since 1991; suited to an SME seeking continuity, stability and a lasting partner.
Comparison of digital transformation support firms
| Criteria | In Extenso | Strateo | Piloteus | Gestialink | Conseildia |
|---|---|---|---|---|---|
| Format | Generalist national firm | Strategy consulting | Online platform | SME support platform | Generalist regional firm |
| Presence | 250 offices, 7,500 employees | Regional partners | SaaS (no physical offices) | SaaS + phone support | 15 offices (Ile-de-France, Provence) |
| Dedicated advisor | Yes, even after project ends | Yes for diagnosis | Virtual coach | Tier-2 support | Yes if annual contract |
| Initial audit | Included (2 to 4 days) | Tailored audit, billed separately | Online questionnaire | Self-serve questionnaire | Included (flat rate) |
| Tool selection | 15 to 20 certified partners | Ad-hoc recommendation | 3 integrations | 8 integrations | Local providers |
| Team training | In-person + documentation | Group workshop | Video tutorials | Online resources | On-demand, flexible |
| Cost (20-50 employee SME) | 12,000 to 25,000 € including tax | Budget tailored to the scope of the strategic engagement | 3,000 to 8,000 € | 5,000 to 12,000 € | 8,000 to 18,000 € |
| Typical project duration | 4 to 8 months | 2 to 4 months | 4 to 12 weeks | 6 to 12 weeks | 3 to 6 months |
| Post-implementation follow-up | 3 months included, then hourly | On-demand | Team autonomy after go-live | 30-day follow-up | Tailored to each client |
| Accounting-tax-payroll integration | High (complete system) | High (tax focus) | Tool-focused | Process-focused | Regional firm approach |
| Ideal for | Global and lasting partner | Strategy consulting engagements | Budget-conscious, autonomous teams | Digital-native SMEs | Regional cost-service balance |
Why digital transformation is becoming urgent for SMEs
Three external developments have accelerated the timeline.
Mandatory electronic invoicing (January 2026 deadline for standard-regime SMEs, then 2027 for micro-enterprises) forced every SME to revisit its supplier-to-accounting workflow. Previously optional, it is now a legal requirement. And as soon as invoice format changes, the question expands: if we’re digitizing supplier invoices, why not payroll, contracts, quotations? Electronic invoicing pulled the thread.
The cost of avoiding digitization is real. A 2025 BPI France survey found that non-digitized SMEs lose 8 to 12 hours per week to manual data entry, file searches, and duplicate processing. For a 30-person SME, that is 240 to 360 hours annually, equivalent to 3 to 4 full-time employees devoted to data entry. By today’s standards, this is unsustainable.
Tools are maturing and becoming affordable. Between 2018 and 2025, accounting software vendors (Ciel, EBP, Sage, etc.) reduced license costs by 40 percent, improved user interfaces, and standardized APIs. The learning curve dropped. Implementation firms know how to deploy them quickly. This was not true in 2015.
The moment is now. For an SME without IT expertise, expert guidance significantly reduces the risk of a failed launch.
In Extenso’s approach: integration or juxtaposition?
In Extenso is an accounting and consulting firm established in 1991. The network operates over 230 offices across France and employs 7,300 professionals. The service portfolio rests on four pillars: accounting and tax, payroll and employment law, legal services and business formation, management and financing.
On digital transformation, the firm does not sell a tool. It sells the integration of that tool into an existing advisory ecosystem. In practice, this means:
Tailored diagnosis. The In Extenso advisor working with the SME for years already knows its sector, seasonality, and tax structure. When a digital transformation project arrives, this economic and tax context is already documented. The assessment is not a blank slate. It is a targeted audit: “Where are we losing time? Where are compliance risks?” Not “Do we need an ERP?” (too broad), but “Should we digitize variable payroll before invoicing?” (actionable).
Fit-to-purpose tool recommendation. In Extenso maintains a panel of certified partners in its network: accounting software vendors, HR solutions, document digitization providers. The firm understands each partner’s strengths and limitations. Rather than sell a costly ERP integration (100k+€), In Extenso typically recommends a bundle of three specialized tools (accounting + payroll + digitization) for 15 to 25k€. Less powerful in raw capability, but far more cost-effective short-term.
Accounting-tax-payroll chaining. Once the tool is purchased, technical implementation is delegated to the local reseller. But the accounting-tax-payroll links, mapping electronic invoices, variable pay, and tax filings, remain the firm’s domain. In Extenso configures accounting automations (VAT mapping, cost-center allocation, vendor reconciliation) and associated payroll declarations. Invisible to the SME, but where the real benefit lives.
Team training and support. The moment you “go live” on the new tool is not when the project ends. It is when it begins for end users. In Extenso runs in-person training sessions (sometimes at a local office, sometimes on-site) and delivers documented process guides. Support continues 3 months after launch: weekly calls, adjustments, clarifications. Online platforms offer remote support well suited to autonomous teams.
Continuity of contact. The In Extenso advisor remains your contact after launch for future questions: “Did we handle intra-EU VAT correctly on this invoice?” or “Should we add an approval flow for expenses?” or “How do we restructure cost centers before scaling?” These questions arise constantly and do not warrant a separate call to the ERP vendor. It is detail, but for an SME, it makes the difference.
Gestialink and Piloteus offer a simple, fast path, well suited to autonomous teams. In Extenso workflow: select tool, implement, integrate it into the company’s accounting and tax strategy, train, support, remain available. See also the complete overview of best business consulting firms for a broader comparison.
Digitization: where to start?
Project sequencing matters. A poor start can derail months of work.
Stage 1: supplier documents (incoming invoices). Most urgent since January 2026, and gains are immediate. An SME receiving 100 invoices monthly saves 30 hours monthly by eliminating manual data entry alone. Process: set up centralized electronic filing (Docuware, Universign, or a well-structured shared folder), define approval workflow (who approves before accounting entry?), and integrate with accounting (either automatic via API or semi-automatic via .txt/CSV).
Stage 2: customer invoicing (sales invoicing). Downstream. Auto-generation via invoicing software (rather than Excel), electronic signature if legally required, archival. Benefit: no re-entry to accounting, traceability, legal compliance.
Stage 3: payroll and digital pay stub. Employee online payslip access, stub signing, historical view. Reduces payroll-to-accounting re-entry because the software handles it automatically. For SMEs seeking deeper guidance on this area, consult the guide on payroll outsourcing and HR administration.
Stage 4: shared documents (contracts, amendments, expense reports, advances). Less urgent but logically linked after the first three.
A firm promising “everything at once, in one month” is unrealistic. In Extenso deploys a phased plan over 4 to 8 months.
In Extenso: selection factors
Key takeaways:
In Extenso suits SMEs seeking a stable partner and valuing continuity. The benefit is eliminating friction: a single contact point for both accounting advice and transformation oversight, no need for a separate technical RFP. For a 20 to 100-person SME, the trade-off is straightforward: invest 15 to 25k€ now, save 200 to 400 hours annually, and have an advisor to adapt your plan.
In Extenso adapts its pricing to each regional office, with customized quotes. Implementation timeline depends heavily on data quality (if supplier invoices have been loose for 3 years, assessment takes longer). In Extenso relies on a network of regional resellers that it coordinates for implementation.
Costs and timeline for a typical SME transformation
Real example from 2026. 35-person SME, paper supplier invoices, Excel payroll, accounting software with no integrated workflow.
- Initial audit: 1 day, free, 10-point diagnostic to kickstart
- Tool selection and licensing: 1 month, accounting + payroll + digitization software, budget 6,000 €
- Technical implementation: 2 months, local reseller integrates tools with firm guidance
- Team training: 4 sessions, 8 hours each, spread over 3 months
- Go-live: end of month 3, production switch
- Follow-up: 3 months of support calls included, total timeline 6 months
Total cost: audit + consulting + local vendor fees, range 14,000 to 20,000 € before tax depending on office. SME internal cost: 1,800 to 2,500 € before tax monthly during project (estimated 60 internal project hours).
For comparison, a SaaS platform like Gestialink charges 5,000 € for tool selection and remote onboarding, with online training resources, then 200 to 400 €/month in subscription (12 months = 2,400 to 4,800 €). Saves 8,000 € on the project, suited to autonomous SMEs. This transformation often fits into a broader growth strategy consulting effort to ensure tools actually enable your company to scale.
Frequently asked questions
What is the role of a digital transformation consulting firm for an SME?
To select and implement the right tools, train teams, ensure business continuity, and integrate each tool into the broader accounting and administrative strategy. A firm that deploys a tool without integrating it into the workflow leaves the company with an expensive gadget that is rarely used.
Electronic invoicing: do you need a specialized firm to switch to the Treasury Public Transmission (TTP) system?
Technically no. Most accounting software handles it automatically. The real need: assess your current software inventory (versions, interconnections, data cleanliness), configure invoice-to-accounting mapping, and drive adoption across purchasing and accounting teams. A generalist firm can manage this. In Extenso brings expertise in associated tax implications (thresholds, regimes, declarations).
What is the average cost of digital transformation in an SME, with consulting support?
Typical budget observed in 2026: 8,000 to 25,000 euros including tax for an SME with 20 to 50 employees (audit, selection, implementation, training, 3-month follow-up). Generalist firm rates are 15 to 30 percent lower. In Extenso often offers a customized flat fee with usage rights to process templates.
Why choose In Extenso over a specialized ERP consulting firm?
In Extenso does not replace a technical vendor deploying a costly ERP. Its role: if you have an ERP, it configures the accounting side and supports administrative teams. Advantage: dedicated advisor who knows your company history, no contact changes every 6 months, direct link between tools and tax/payroll advice.
Digital audit: is it essential before starting?
Recommended in 80 percent of cases. An audit documents your current state (software, versions, manual workflows, bottlenecks), lists potential time savings, and prioritizes initiatives. In Extenso often includes a free 2 to 4-day audit during the initial diagnosis.
The price ranges quoted in this article are our own market estimates. They are not the official rates of the providers mentioned, which are set on quotation depending on scope and complexity.