Switching to Pennylane in 2026: an Operational Playbook (Firm and Client)

Updated May 19, 2026 — Pennylane has become the most widely deployed financial management platform among French business owners working with a chartered accountant. As a certified Pennylane partner and trainer based in Paris 8, we run migrations every month — either for a single client switching firms, or for an entire accounting firm rolling out the tool across its portfolio. This guide summarizes the operational method we use: steps, VAT and FEC setup, OCR, bank connectors, training, and a focus on the accredited platform (PA) status for the 2026 French e-invoicing reform.

Key takeaway: switching to Pennylane is not an "IT" task but an accounting transformation project involving the firm, the business owner, the internal finance team and sometimes the IT department. Done well, a client migration takes 4 to 6 weeks; an entire firm migration takes 4 to 6 months.

1.1 A platform aligned with the e-invoicing reform#

The rollout of mandatory B2B e-invoicing happens in two waves: mandatory reception from September 1, 2026 for all companies, mandatory issuance from September 1, 2026 for large enterprises and ETIs, then from September 1, 2027 for SMEs and micro-enterprises (source: impots.gouv.fr). The system relies on a network of accredited platforms (PA) approved by the French tax authority, replacing the original concept of a single public portal (PPF) now refocused on the central directory and data concentration.

Pennylane positioned itself as a PA candidate as soon as the DGFiP referencing process opened. The platform natively supports Factur-X (PDF/A-3 with embedded XML), e-reporting of B2C and international transactions, and connection to the central directory. Before any migration we check the current PA status on the official DGFiP list and confirm the exact scope Pennylane covers (B2B France, B2C, intra-EU, exports).

1.2 Real-time accounting, not "rearview mirror"#

With a traditional suite (Sage Coala, Cegid Expert, EBP), the business owner only discovers the result 3 to 6 months after closing. Pennylane enforces a continuous bookkeeping model: bank flows imported the next day, automatic OCR on supplier invoices, assisted matching, cash flow / revenue / margin dashboard accessible from mobile. The owner steers, the firm controls and advises.

1.3 Measurable ROI for the firm#

Across our portfolio, switching to Pennylane typically frees up 30 to 50 % of production time on monthly reviews (automated data entry, matching, supporting documents). The time freed is reinvested in high-value advisory work: reporting, forecasts, tax optimization, structural advice. It is also a retention lever: a Pennylane-equipped client is harder to lose because the collaboration is integrated into their daily life.

2.1 Step 1 — Pre-migration diagnosis (1 week)#

Diagnosis drives success. We document:

• Source software: Sage, Cegid, EBP, Quadratus, ACD, Coala, or SaaS tools (Indy, Tiime, Dougs); we check FEC export capability and balance availability.
• Accounting scope: number of entries per month, third-party accounts, fixed assets, inventory, multi-currency, multi-site, multi-entity.
• Banks and payment methods: main banks, neobanks (Qonto, Shine, Memo Bank), corporate cards (Spendesk, Pleo), payment gateways (Stripe, GoCardless, PayPal).
• Billing flows: monthly volume, quote/invoice templates, payment terms, mandatory legal notices, credit notes and deposits.
• Third-party tools: CRM (HubSpot, Salesforce, Sellsy), e-commerce (Shopify, WooCommerce, Prestashop), HRIS/payroll (PayFit, Lucca, Silae), expense management (Spendesk, Expensify).

Deliverable: a setup specification + a detailed schedule with milestones.

2.2 Step 2 — Pennylane setup (1 to 2 weeks)#

Setup covers six parallel workstreams:

1. Chart of accounts: import the custom PCG, create sector-specific accounts (e.g., multiple 707 accounts for multi-channel e-commerce, foreign supplier sub-ledgers, fixed-asset categories).
2. VAT: choose the regime (monthly normal, simplified CA12, base franchise), define rates (20 %, 10 %, 5.5 %, 2.1 %, exemptions, intra-EU reverse charge and construction services), map 4456x/4457x/4458x accounts, activate CA3 or CA12 e-filing through the Pennylane VAT module.
3. Bank connectors: PSD2 strong authentication via Bridge or Powens, check the historical depth captured (typically 90 days), set up automatic matching rules.
4. OCR and inbox: enable the dedicated email address (xxx@pennylane.eu), connect recurring suppliers (Amazon, Google, Microsoft, OVH, SNCF Pro) via the "automatic supplier invoices" module.
5. Invoicing: import quote/invoice templates, configure T&Cs, late payment penalties (ECB rate + 10 points), the €40 fixed indemnity, automated reminders at D+15/D+30/D+45.
6. Rights and users: create profiles (owner, internal team, accountant, firm staff), define module-level permissions, enable two-factor authentication.

Deliverable: a production-ready Pennylane workspace with a signed acceptance checklist.

2.3 Step 3 — Historical data takeover: FEC and opening balance#

This is the most technical stage. We work in three steps:

• Export the FEC for year N-1 from the old software using the standardized DGFiP format (18 mandatory columns: JournalCode, JournalLib, EcritureNum, EcritureDate, CompteNum, etc.). Check line count and debit/credit totals.
• Import into Pennylane: the platform automatically checks balance equilibrium, flags anomalies (missing accounts, invalid dates, unbalanced entries) and proposes automatic mapping to the target chart of accounts.
• Opening balance: inject the balances at day 1 of the current year, validate matching of third-party accounts (411 customers, 401 suppliers), carry over fixed assets with their depreciation schedule (commissioning date, useful life, straight-line/declining mode, residual value).

Watch out: on high-volume files (>50,000 entries/year) or multi-entity setups, prepare a documented takeover file for tax traceability in case of audit.

2.4 Step 4 — Owner and team training (1 day)#

Samuel HAYOT, Pennylane certified trainer, leads a hands-on session on site or via video call:

• Getting started with the web and mobile interface (iOS/Android).
• Creating quotes, invoices, credit notes; handling reminders.
• Reading the financial dashboard: available cash, 13-week forecast, aged receivables, payables, estimated result.
• Best practices for dematerialization: "zero paper" rule, mobile scanning, classification by category, batch entry validation.
• Expense management: integrated module or Spendesk/Expensify integration.

The training is OPCO-eligible when delivered by our Qualiopi-certified partner organization. We provide a customized PDF handout and access to our video tutorial library.

2.5 Step 5 — Parallel run (1 month)#

For the first month, Pennylane runs in parallel with the legacy software. The goal: validate figures, identify gaps, fine-tune categorization and matching rules. No irreversible decision, no risk of loss.

2.6 Step 6 — Final switchover and 3-month follow-up#

After validating the parallel run, the legacy software is archived (full export kept for 10 years per tax obligation). Our team provides close follow-up for 3 months: weekly check-in in month 1, twice-monthly in month 2, monthly in month 3. We prioritize use cases not covered by the initial training.

Migrating an entire firm to Pennylane is a different scale of project. Our method:

1. Portfolio diagnosis: segment files by type (TPE services, e-commerce, holding, BNC professionals, BIC retail, non-profits), volume, complexity. Identify "quick wins" and complex files to migrate last.
2. Pilot on 5 to 10 representative files: 4 to 6 weeks to refine the internal method, identify friction points, stabilize setup templates.
3. Staff training plan: all production staff complete the Pennylane certification (3 to 5 days of training + online exam). A team referent is appointed.
4. Client communication: announcement letter or email 60 days before migration, dedicated FAQ, group presentation session (webinar), individual support from the file manager.
5. Migration in waves: 10 to 20 files per month over 4 to 6 months, with a backwards plan aligned with monthly closings and year-end.
6. Revamping the commercial offer: integrate Pennylane in the packages, reposition around advisory and management rather than pure production.

Our expert opinion: Sage and Cegid remain relevant for very large firms with specific workflows (firms with 50+ staff, consolidated files, multinationals). For the majority of French TPEs and SMEs and for small to mid-size firms, Pennylane is now the best choice: pricing, ergonomics, alignment with the 2026 reform, deployment speed.

5.1 The five most common pitfalls#

1. Underestimating data takeover: a poorly exported FEC or an unbalanced opening balance can block migration for days.
2. Neglecting owner training: without client buy-in, ROI collapses and collaboration becomes painful again.
3. Migrating too fast: a complex file migrated in 48h with no diagnosis ends up needing rework 3 months later.
4. Forgetting business workflows: an e-commerce selling on Shopify, Amazon, Cdiscount needs specific connectors validated before switchover.
5. Poorly framing the parallel run: if nobody actually runs both tools simultaneously, figures cannot be validated.

5.2 Key success factors#

• An identified project lead on both client and firm sides.
• A realistic schedule aligned with closings and year-end.
• Weekly governance during the first 6 weeks.
• Living documentation (setup file, user welcome kit, internal FAQ).
• A clear service level agreement (SLA) for post-switchover support.

As September 1, 2026 approaches, the official list of accredited platforms (PA) published by DGFiP becomes the reference document. Before any migration, we systematically check:

• Pennylane's PA status at the migration date (candidate, accredited, fully accredited).
• The functional scope covered: B2B France issuance, B2C e-reporting, international e-reporting, transmission to the central directory.
• Service continuity guaranteed in case of malfunction (backup platform, degraded procedure).
• Factur-X compliance (PDF/A-3 + embedded XML) and UBL for European flows.
• Contractual commitments on invoice archiving (minimum 10 years, evidentiary value).

For owners still hesitating in 2026, the calendar leaves no room: any system not connected to an accredited PA by September 1, 2026 will no longer be able to receive supplier invoices in B2B. Better to switch now than under summer pressure.

As a Pennylane partner firm and certified trainer, Hayot Expertise drives the migration end to end:

• Free diagnosis (1h, video or Paris 8 office).
• Turnkey setup and data takeover.
• Owner and team training (OPCO-eligible).
• Parallel run and secured switchover.
• Close follow-up for 3 months post-switchover, then integrated support in the annual package.

For firms looking to migrate their portfolio, we offer a transformation support engagement: methodological audit, pilot, staff training plan, tooling support.

Request a Pennylane migration quote — First meeting free.