What we learn on the ground, shared simply.
It appears on no invoice and in no accounts. It gets done in the evening, on Saturday, or late. We measured it at several clients: here is where it goes, and what we got back.
One quote at 1,500 €, another at 12,000 €, a third saying « bespoke, please enquire ». You ask for a price and you are told it depends. So let us publish the whole calculation, including everything that arrives after launch.
Your invoicing software must seal every invoice, chain it to the previous one and register it with the AEAT. Many companies will pay a platform for that. Others will use the moment to fix everything else at the same time.
