A self-employed person who still invoices via a Word file or an Excel spreadsheet will face a technical wall starting September 2026. The reform of electronic invoicing leaves no room for interpretation: office tools do not produce a structured format and do not communicate with any approved platform. Adopting invoicing software suitable for the micro regime is no longer a convenience; it is a condition for operation.
Structured formats and approved platform: what the e-invoice reform changes technically
Electronic invoicing as defined by the reform does not refer to a PDF sent by email. A valid document must be in Factur-X, UBL, or CII format, meaning a structured file readable by a machine and transmitted via an approved platform. No spreadsheet or word processor natively generates these formats.
For micro-enterprises subject to VAT, the obligation to receive electronic invoices via an approved platform comes into effect in September 2026. The obligation to issue follows in September 2027. In practical terms, a self-employed person who exceeds the VAT exemption thresholds will need to be connected to a platform capable of issuing and receiving these structured flows.
We observe that most competing articles still mention the “technical possibility” of invoicing on Excel. This is correct under the current legal framework, but operationally outdated in the short term. Compliant invoicing software integrates the generation of these formats and the connection to an approved platform without additional manipulation.
To meet this requirement without multiplying subscriptions, the invoicing software for self-employed individuals from Club Auto-Entrepreneurs centralizes the creation of compliant invoices and the link with approved platforms in a tool designed for the micro regime.
Certification of invoicing software: immutability and combating VAT fraud
The certification of invoicing software is based on four technical criteria: immutability, security, preservation, and archiving of data. The stated goal of the tax administration is to reduce VAT fraud by making any subsequent modification of an invoice traceable and verifiable.
A self-employed person under the VAT exemption might think that this logic does not concern them. This is a misanalysis. Certification will become mandatory for all French companies by 2027, regardless of the tax regime. Certified software ensures that each issued invoice is timestamped, sequenced, and stored irreversibly.
In practice, using a non-certified tool exposes one to penalties during a tax audit. The administration can challenge the entire accounting if it finds that the software allows for the deletion or modification of an invoice without leaving a trace. A certified software protects both the self-employed individual and their clients.
Mandatory mentions and numbering: common mistakes in micro-enterprises
The invoicing rules for a self-employed person are identical to those of any business. Each invoice must include the identity of the seller and buyer, the SIRET number, a precise description of the services or products, the unit price, the total amount excluding tax, and the late payment penalty rate.
Sequential numbering is the point where we see the most errors. An invoice cannot bear a number assigned randomly by hand. The sequence must be chronological, continuous, and without breaks. Invoicing software manages this numbering automatically, eliminating the risk of duplicates or gaps in the series.
Another common pitfall: the mention “VAT not applicable, article 293 B of the CGI” must appear on every invoice as long as the self-employed person remains under the exemption. Forgetting this mention can lead to a tax adjustment, with the administration considering that VAT should have been collected.
- Sequential and chronological numbering without breaks, managed automatically by the software
- Mandatory mention of the VAT exemption (article 293 B of the CGI) on every invoice
- Complete identity of both parties, SIRET number, precise description of goods or services
- Payment terms and late payment penalty rates, often missing from manual invoices
Monitoring VAT thresholds and revenue in invoicing software
The micro-enterprise regime imposes revenue ceilings beyond which the self-employed person changes tax regime or becomes liable for VAT. A failure to detect an excess in time generates retroactive adjustments and corrective invoicing to each affected client.
Properly configured invoicing software aggregates real-time collected revenue and alerts before reaching the thresholds. This feature avoids the classic situation where the self-employed person discovers at the end of the year that they have exceeded the ceiling for several months.
Monitoring VAT thresholds is distinct from monitoring the revenue ceiling of the micro regime. Both must be monitored separately. Good software distinguishes these two mechanisms and displays differentiated alerts because the consequences of an excess are not the same.
Record of receipts and archiving: often neglected obligations
Every micro-entrepreneur must maintain a chronological record of receipts, mentioning for each payment the amount, origin, payment method, and invoice reference. This register is mandatory and must be presented in case of an audit.
Invoicing software automatically generates this record from issued invoices and recorded payments. Compliant digital archiving ensures preservation for the legal duration, without the risk of data loss related to a corrupted local file or a failing hard drive.
- Automatic generation of the record of receipts from recorded payments
- Secure archiving of invoices for the legal duration of preservation
- Export possible in case of a tax audit, in the format expected by the administration
The transition to invoicing software for a self-employed person is no longer a matter of optimization. The deadlines of September 2026 and September 2027 set a precise timeline. A compliant, certified tool suitable for the micro regime simultaneously addresses regulatory compliance, threshold management, and archiving, three points where a spreadsheet can no longer keep up.