e-Invoicing is no longer just a concern for large corporations; it is now on the agenda of businesses of every size. As mandatory thresholds are lowered each year, retailers such as grocery stores and delis, along with clinics offering dental or aesthetic services, are increasingly drawn in. In this guide we explain the e-invoice transition step by step.
What Is e-Invoicing?
An e-invoice is the electronic equivalent of a paper invoice. It is issued in a defined standard format, transmitted electronically and stored digitally. It carries the same legal validity as a paper invoice while eliminating printing, postage and archiving costs.
Its key advantage is that the invoice reaches the recipient through a central system, removing the risk of hand delivery, loss or delay. An invoice issued to a wholesaler at a deli, or a service invoice prepared for a patient at an aesthetic clinic, reaches the other party within minutes.
Who Must Switch?
Businesses that exceed a certain revenue threshold are required to switch to e-invoicing. This threshold is updated every year and generally lowered, so a business that is out of scope today may become subject to the mandate next year. It is important to confirm your current status with your accountant or through official sources.
Beyond the revenue threshold, certain sectors and activity types may also be covered directly. Even when it is not mandatory, voluntary adoption is possible; for a busy grocery store issuing many invoices or a clinic with regular corporate clients, switching early often pays off.
Transition Steps
The process consists of a few core steps. First, you obtain a financial seal for legal entities or an e-signature for individuals. Next, you select a private integrator or opt for the portal method. Finally, the software you use is integrated with the system so that invoices are issued and sent from a single point.
The e-invoicing feature is actively available within Welda Clinic; clinics can issue patient and service invoices directly through the application. The Welda Muhasebe module, which will bring all your invoicing and pre-accounting needs under one roof, is coming soon. If you have questions about the transition, feel free to get in touch with us.
Common Mistakes
The most frequent problems are an incorrect or missing tax number, faulty line-item details, and failing to send the invoice within the legal timeframe. These errors can lead to rejected invoices or penalties. Automated checks catch these gaps before the invoice is sent.
A second common mistake is treating e-invoicing as a standalone form-filling task. In reality, invoicing reveals its true value when considered together with sales and inventory processes. To plan this end-to-end transformation step by step, read our business digitalization guide, and explore the features of Welda Clinic for a solution that fits your needs.