Invoice what you have delivered, never twice
Your stock issues, slips and shipments are already in GSE-Web. The invoice starts from there: you tick what was delivered, and the software calculates, checks, numbers and archives the document.
PDF format
Factur-X
Plans
All
Payment reminders
Off by default
3
numbered series: invoices, credit notes, deposit invoices
1
single calculation of totals, done by the server
0
invoices editable once issued
5
languages for PDFs and e-mails
The invoice starts from what was delivered
No double entry: what you took out of stock, prepared or shipped appears, in a few clicks, on the customer's invoice.
Tick, check, issue.
Choose what was delivered
For a customer, GSE-Web suggests what remains to be invoiced: issue slip lines, shipments, portal orders, stock issues. You invoice everything, or only part of it.
Check the preview
The draft has no number yet: you can edit and delete it freely. The preview shown is calculated by the server, using the same calculation as the issued invoice.
Issue
The checks pass, the number is assigned, the PDF is produced and locked for good. You send it by e-mail from the invoice page, and it goes out with its PDF.
The counterfoil book, only better
A paper invoice comes out of a counterfoil book: the numbers follow one another, and you never tear out a page that has already been filled in. GSE-Web applies the same rule , and adds what the book could not do: it knows what has already been invoiced, calculates taxes and files each document with its fingerprint.
Ready in two steps
The module is already there. You just need to tell the software who you are.
Open the INVOICING menu
The section sits in the menu between OMS and PMS: Invoices, Create an invoice, Schedule and reminders, Invoicing settings. It is open to all organizations, whatever the plan.
Review the suggested settings
Company, taxes, appearance, numbering, payment, legal notices, start date, reminders: one card per topic. What GSE-Web already knows (company name, address, VAT rates, bank details) is suggested to you, and you accept it with one click. A sample PDF shows the result alongside.
Nothing already invoiced comes back. The “billable from” setting fixes a date: no earlier issue is suggested. The history you invoiced with another tool does not reappear as “to invoice” on the day you start.
Switching tools? Set the first number of each series to continue your current numbering, with no gap. The counter can never go back down.
Four documents, one cycle
Invoice
Series FA · for what was delivered to the customer
Lines come from slips and shipments, portal orders, stock issues without a slip, or free entry. The price is suggested (locked price of the order, sale price of the stock line issued, product price list) and stays editable while the invoice is a draft. Shipping costs are a separate, taxed line.
From a slip, a shipment or a portal order, the “Invoice” button opens the draft already filled in.
Credit note
Series AV · the only way to correct an issued invoice
The credit note quotes the number and date of the invoice it corrects. It can cover the whole invoice or only part of the quantities. The credited quantity becomes billable again: a carton returned and then sent again is invoiced anew, only once.
The original invoice becomes “partially credited” or “credited”: its history stays readable.
Deposit invoice
Series AC · get paid before delivering
The deposit invoice is issued like an invoice, with its own series. On delivery, the final invoice quotes it and deducts its amount: the customer only pays the balance.
Only what has actually been collected on the deposit counts towards the balance to pay or to refund.
Payments and reminders
Know who owes what, and since when
Several payments per invoice: date, amount, method, reference. A payment entered by mistake is not erased: it is cancelled by a reversing entry that keeps the trace. The schedule lists unsettled documents, the balance due and the delay, calculated every day in your time zone.
Payment reminders are off by default. When switched on, up to three levels go out N days after the due date, at the time you choose. Each reminder has its own history: pending, sent, failed, cancelled.
What the software guarantees
An invoice is evidence. GSE-Web refuses whatever would weaken it, rather than relying on everyone's attention.
Never the same goods twice
A portal order becomes a slip, the slip becomes stock issues: three forms for the same carton. GSE-Web brings them back to a single billable line and tracks, for each one, the quantity invoiced and the quantity credited. Two people invoicing the same line at the same moment invoice it only once.
A continuous number, never reassigned
The number is assigned at the moment of issue, after the checks. A refused issue leaves no gap; an issued invoice never gives its number back.
A locked, verifiable document
At issue, everything is locked: seller, customer, lines, rates, legal notices, settings of the day. The PDF is kept exactly as issued with its fingerprint, and a button checks that it has not changed by a single byte. Changing your settings does not touch any invoice already issued.
Mandatory notices checked
In France (mainland and overseas departments), issuing is blocked if a required notice is missing: the business customer's SIREN, the seller's full identity, the reason for a zero rate… The refusal gives the complete list, not one omission at a time. Elsewhere, these are simple warnings.
Everything you deliver is billable
Invoicing reads what the other modules have already recorded. You have nothing to re-enter, and nothing gets lost between the warehouse and accounting.
Invoice lines can come from
Issue slips and shipments: the quantities delivered, returns deducted, line by line or in part.
Customer portal orders: at the price locked when the order was placed.
Stock issues without a slip: a counter sale can be invoiced too.
Free lines and standard lines: service, flat fee, shipping costs. The lines you invoice often are prepared once, sorted by drag and drop and picked with one click.
Sent with its PDF
The invoice goes out by e-mail from its page, with the issued PDF attached, in the customer's language. Six e-mail templates (invoice, credit note, three reminder levels, payment acknowledgement) can be customized in ADMIN › E-mail templates. People who hold the “Receive invoice” right get a copy.
Exportable at any time
The invoice list can be exported to CSV or Excel, and the PDFs of a selection can be downloaded as a ZIP archive, each fingerprint rechecked along the way.
The words of invoicing
Six terms you will meet on screen, explained without jargon.
Draft
An invoice in preparation, with no number. You can edit it or delete it, and no one else sees it as an official PDF.
Issue
The moment when the invoice receives its number and becomes final. From then on, it can no longer be changed.
Credit note
An invoice “in reverse”. It cancels all or part of an issued invoice, quoting its number.
Deposit invoice
An amount invoiced before delivery, then deducted from the final invoice.
Factur-X
A human-readable PDF that also contains the invoice as structured data, readable by your customer's software. The e-invoicing format in France.
Billable from
The date before which nothing is suggested for invoicing. It protects the history already invoiced elsewhere.
Who does what
The rights in the INVOICING category are assigned by group, like all GSE-Web rights.
| Right | What it allows | |
|---|---|---|
| View | ||
| View invoices | See invoices, credit notes, deposit invoices, the schedule and the reminder history. | |
| Prepare and issue | ||
| Edit invoices | Prepare drafts, issue invoices, credit notes and deposit invoices, and send them by e-mail. | |
| Payments and reminders | Enter and cancel payments, suspend or trigger an invoice's payment reminders. | |
| Configure | ||
| Invoicing settings | Set up the company, taxes, numbering, legal notices, payment reminders and standard lines. | |
| Receive invoice | Receive a copy of every invoice sent. | |
One tax or two,
and your AI assistants in read-only mode
Invoicing follows your organization's country: the French legal framework applies only in France, and countries with two taxes are covered.
Single-tax regime (VAT, several rates) or two cumulative taxes on the same line (GST + QST in Canada), with a checkbox per product for exemption from the second.
Factur-X EN 16931 in a PDF/A-3 under the single-tax regime; plain PDF under the two-tax regime, which the standard does not describe.
VAT exemption for small businesses (French article 293 B), VAT on receipts basis, late-payment penalties and the fixed €40 recovery fee for a business customer (French rules): printed when they apply.
MCP server: your AI assistants consult invoices, the schedule, reminders and lines to invoice, in read-only mode. Issuing remains an action performed in the application.
"number": "FA-2026-00042",
"issueDate": "2026-10-09",
"dueDate": "2026-11-08",
// amounts as exact decimal strings
"taxBasisTotal": "1250.00",
"grandTotal": "1500.00",
// status and balance due, up to date with payments
"status": "partially_paid",
"amountDue": "500.00",
"overdue": false
Your invoices start from your stock.
Nothing left to re-enter.
Included in all plans. Show us how you invoice today: we will look together at what GSE-Web can take over.
Frequently asked questions
Is GSE-Web invoicing ready for e-invoicing?
GSE-Web already produces its invoices, credit notes and deposit invoices in Factur-X format (EN 16931 profile, in a PDF/A-3), the format chosen in France. The French reform requires small businesses to issue their invoices electronically from 1 September 2027, through an accredited platform. Transmission from GSE-Web to an accredited platform is planned, as an option; it is not yet available.
Can an invoice that has already been issued be changed or deleted?
No, and that is intentional. An issued invoice is locked: its PDF is kept as is with its fingerprint. To correct a mistake, you issue a credit note, full or partial, which quotes the original invoice. Only a draft, which has no number yet, can be edited or deleted.
Do payment reminders go out without my decision?
No. Payment reminders are off by default. You switch them on in the invoicing settings, and you choose up to three levels, their delays and the sending time. A customer can be excluded from reminders, an invoice can have its reminders suspended, and each reminder has its own history.
Are my old invoices carried over?
No: invoices created with another tool are not imported. You can, however, continue your numbering by setting the first number of each series, and set the date from which stock issues are suggested for invoicing, so that you never re-invoice what has already been invoiced.
Is invoicing included in my plan?
Yes. Sales invoicing is open to all organizations, whatever the plan. Only the future transmission to an accredited platform will be a paid option.