Configuration & Integration of Odoo Accounting — What Your Accountant Should Do

The Accounting module in Odoo 19, 18, 17, and 16 is powerful — but incorrect configuration can distort all your financial reporting and create risks during a tax audit. This page details what professional accounting configuration on Odoo entails, and why entrusting this task to a certified accountant makes a real difference.

Odoo 16, 17, 18 and 19 · Updated: April 2026

The steps

The 6 steps of a successful Odoo Accounting setup

Step 1 — Chart of accounts PCG

Odoo includes a French general accounting plan by default. Our first task is to adapt it to your business: removal of unnecessary accounts, creation of sub-accounts specific to your sector (service provision, trading, e-commerce, construction, association), configuration of expense and revenue accounts by type of operation.

Step 2 — Configuration of taxes and VAT regimes

Configuration of all taxes applicable to your business: VAT 20%, 10%, 5.5%, 2.1%, intra-community VAT, self-assessment, VAT on margin, exemptions. In Odoo 19 and 18, tax positions allow for the automation of the application of the correct taxes based on the nature of the transaction and the location of the customer or supplier.

Step 3 — Accounting journals

Creation and configuration of journals: sales, purchases, bank (one journal per bank account), cash, miscellaneous operations. Configuration of numbering sequences in accordance with French legal requirements. Configuration of default counterpart accounts for each journal.

Step 4 — Automatic bank reconciliation

Connection of direct bank flows (Open Banking or import OFX/MT940), configuration of automatic reconciliation rules based on amounts and invoice references. In Odoo 19, the reconciliation module integrates a layer of artificial intelligence that progressively improves the quality of automatic suggestions.

Step 5 — Analytical accounting

Creation of analytical axes (projects, departments, cost centers) and analytical plans. Configuration of automatic allocation rules according to the type of product or service. Setting up analytical budgets for real-time variance tracking.

Step 6 — Electronic invoicing 2026

Activation du format Factur-X EN 16931, connexion à votre PDP certifiée via l'API officielle, paramétrage des 4 nouvelles mentions obligatoires sur toutes les factures, tests de conformité end-to-end. Disponible sur Odoo 16, 17, 18 et 19.

Which version of Odoo?

What changes between Odoo 16, 17, 18, and 19 in accounting

Version	Nouveautés comptables clés
Odoo 19	AI bank reconciliation · Redesigned interface · Predictive cash management · Advanced PDP integration
Odoo 18	Open Native Banking · Improved Factur-X EN 16931 · Redesigned accounting dashboard
Odoo 17	Analytique v3 · Peppol pour facturation internationale · Reporting amélioré
Odoo 16 (LTS)	Factur-X basic · Classic bank reconciliation · Support guaranteed until 2028

Migration

Migration comptabilité vers Odoo — Les points de vigilance

If you are migrating from an existing accounting software (Sage, Cegid, EBP, QuadraCompta, Pennylane....), here are the critical points to anticipate:

Recovery of carryovers

Exports of account balances at the cutover date, verification of balances

Migration of third parties

Clients and suppliers with their payment terms and banking data

Migration of fixed assets

Depreciation schedule, gross and net values, acquisition dates

Consistency tests

Comparison of financial statements between the old system and Odoo over a benchmark period

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FAQ

FAQ — Odoo Accounting Setup

How long does a complete Odoo Accounting setup take?

For a standard SME (general accounting + simple analytical + electronic invoicing), expect 3 to 5 days of setup.

For more complex structures (multi-companies, advanced analytics, migration from an existing ERP), the duration can reach 8 to 12 days.

Do you need to be on Odoo 19 to benefit from all accounting features?

No. Odoo 16 LTS already covers 95% of an SME's accounting needs, including electronic invoicing 2026. Odoo 19 and 18 bring improvements in automation — useful but not essential to get started.

Can we run Odoo Accounting alongside our current software?

Yes, during a transition phase. We recommend a double entry period of 1 to 2 months to validate data consistency before fully switching to Odoo.

Request an audit of your Odoo setup — Free · 45 min

Advanced Conseil evaluates your configuration and identifies risk points · Odoo 16/17/18/19

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