Most of what a detailing shop sells is agreed in a message and settled in a rush at the end of the month. This is the part of the software that handles money: what you offered, what was approved, what it became, and what it earned when the hours are counted.
The price lives in the package, not in your head
Each package carries its own price and its own calculated time, so two people quoting the same treatment arrive at the same amount. For a business account the agreed rate sits with that account and is applied on its own, without anyone looking up last year's arrangement.
Invoices, credit notes and a quarterly VAT overview
Every invoice draws a number from your own running series, and a correction leaves as a credit note that names the invoice it corrects. The quarterly VAT overview and the export of the list are part of the product; neither is an extra you switch on.
Invoice numbering per company, with no gaps and no duplicates
A credit note that points at the invoice it corrects
A VAT overview per quarter, on the surface where the invoices are
The invoice list as a CSV file you can hand on
What it is not: a ledger
It writes and sends the invoice, shows the VAT you charged and hands the list over as a file. It keeps no ledger, files no return and has no line into the software your accountant uses. That work stays exactly where it is now; only the paper chase in front of it disappears.
VAT follows the customer, not the document
The regime hangs on who you are invoicing: a private owner, a business at home, or a business abroad whose VAT number moves the charge to them. That number is checked against the European VIES service, once where you enter it and once more as the invoice is issued, and a service that happens to be down leaves it unconfirmed rather than blocking anything.
With the reporting module, at 29 euro a month: it puts the measured time next to the time you calculated, per package, across recent jobs, and names the packages that structurally run more than 10% over.
Does it connect to my accounting software?
No. There is no accounting connection. What leaves the system is the invoice itself, the VAT overview and the CSV export; whatever a ledger does happens outside it.
Can I put my own house style on an invoice?
From the Pro plan your own logo, colours and typeface go on the documents. On Base they leave in the standard house style; the difference is in how the paper looks, not in what you can do.
What about a business customer in another EU country?
Enter their VAT number and the charge shifts to them; the invoice states it. The number is validated where the European service can be reached, and recorded as unconfirmed where it cannot.