The CII Software Tax Credit: A Practical Guide for French SMEs

The Crédit d'Impôt Innovation (CII) is a public-law tax incentive that allows qualifying French SMEs to recover up to 30% of eligible R&D and innovation expenditure as a credit against corporation tax.

Most French SME directors have never applied it to software — because the scheme is associated in most minds with laboratory R&D, not with writing a specification for a custom inventory system. That association is wrong, and the commercial consequence is significant.

A €50,000 qualifying software project becomes a net investment closer to €35,000 for an eligible business. At Prime Digital Labs, we assess CII eligibility at the specification stage and produce the required documentation as a standard deliverable on qualifying engagements.

What qualifies: the project must involve genuine technological innovation — creating a new product, process, or service that goes beyond routine development. Standard website builds typically do not qualify. Custom software with novel integration architecture, AI components, or proprietary algorithms typically does.

What you need to claim: a scope description mapping eligible activities to CII criteria, a time-tracking record for eligible development hours, and a technical summary suitable for submission. These are produced by your development partner — not by your accountant.

Confirm eligibility and claim mechanics with your accountant or a specialist tax adviser before submission. We identify the eligible scope and produce the documentation; we do not act as tax advisers.