People use the two terms interchangeably, but they solve different problems. Knowing which one a country asks for decides what your integration must do.
E-invoicing
E-invoicing means the invoice itself is exchanged as structured data between supplier and customer, usually through a network or a platform. The receiving system can read it without anyone retyping a thing.
E-reporting
E-reporting means a copy or a summary of the transaction is sent to the tax authority, often in near real time. The customer may still receive a PDF by email. The authority simply gets the data.
Why it matters for your stack
- Exchange regimes need delivery confirmation from the buyer side
- Reporting regimes need a receipt from the authority and often a unique code on the invoice
- Many countries combine both, with different deadlines for each
A good invoicing layer models both as steps in a workflow, so adding a country means adding steps rather than rewriting your billing code.