BDO is one of the French and international leaders inaccounting expertise, audit and consulting. Its reputation is based on a high technical requirement, a irreproachable rigor And a customer proximity exemplary.
AI Sisters had the privilege of accompanying more than 100 employees accounting teams from the Paris office in a generative artificial intelligence training program, tailor-made for their job.
The challenge ahead:
- Raise awareness among chartered accountants to generative AI in an environment where accuracy, compliance, and quality of analysis are critical.
- Federate experienced teams around a new way of working with AI, by demonstrating its role in driving efficiency without compromising precision.
- Integrate generative AI in missions with high added value: financial, legal, fiscal analysis, drafting of reports and formulation of customer recommendations.
What we were aiming for together
- Introduce the Foundations of generative AI adapted to accounting missions.
- Teach the prompting techniques to communicate effectively with AI and obtain reliable and actionable answers.
- Suggest a program 100% Microsoft Copilot oriented, to maximize productivity directly in daily work tools.
- Explore concrete and realistic use cases, which can be immediately activated in the missions of employees.
Our approach:
We designed a AI show structured in two stages, designed for a gradual appropriation of uses:
- One Immersive introduction to generative AI: clarification of concepts, live demonstrations and illustration of business benefits.
- One Introduction to prompting adapted to the realities of accounting expertise: precise formulation, logical structuring, adaptation to the client context.
This approach alternated theory, demonstrations and practical exercises to anchor the good AI reflexes from the first session.

What we have put in place
AI use cases explored during the training
- Sectoral and strategic analysis : automatic summary of market trends.
- Relationship preparation : popularization of technical reports and adaptation to the customer profile.
- Financial analysis : extraction of key indicators, creation of summaries and automated structuring.
- Transforming complex content in clear and understandable documents.
- Legal and contractual analysis with identification of critical clauses.
- Tax optimization and automated costing to expedite the preparation of recommendations.
- Construction of structured customer returns with automatic formatting.
The common thread of the “Promptathon”:
The teams worked on a full external growth scenario :
- Framing customer demand And first market analysis.
- Diagnosis of financial health of the target and evaluation of its debt capacity.
- Comparison of financing offers and formulation of a contractual recommendation.
- Quantifying fiscal optimizations and preparation of final feedback pack.
Ce Promptathon allowed employees to Concretely test AI on a realistic business case, representative of their daily missions.

The concrete impacts
- One rapid increase in skills on the essential reflexes of prompting.
- One significant improvement in the formulation of prompts, making AI results more reliable, consistent, and actionable.
- One strengthened ability to synthesize, analyze, and reformulate complex data.
- One smooth adoption of Microsoft Copilot, perfectly aligned with everyday office tools.
- One positive collective dynamic, focused on innovation and business excellence, in a demanding environment.
Perspectives and consequences:
This first generative AI training marks a key step inacculturation to artificial intelligence accounting teams from BDO Paris.
The employees leave with:
- Of solid foundations,
- Of concrete tools,
- And a clear vision of AI uses directly applicable in their audit and advisory missions.
What if it was you?
And if you chartered accountants could, they too, integrate concrete, reliable and productive AI reflexes in their daily missions?
Contact AI Sisters to design a custom AI training program, adapted to your tools (Copilot, GPT chat, Perplexity), to your business challenges and to your level of requirement.
Customized generative AI training for BDO Paris accounting teams, with more than 100 employees trained in the use of Microsoft Copilot and in prompting techniques applied to audit, finance and consulting.





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