by Kavio Labs · for CS-Cart & Multi-Vendor
Sequential invoice numbers, editable invoice and credit note documents, credit notes on refunds, PDF and bulk print.
CS-Cart numbers its invoices with one plain counter, with no number formats, no series per storefront or vendor and no credit notes for returns. Invoices & Credit Notes gives every order its own invoice number when it reaches the status you choose, from a series per storefront or vendor, without gaps or duplicates. Each invoice keeps the content it was issued with, and corrections are made with numbered credit notes. Made for stores and marketplaces that want tidy, sequential documents for their bookkeeping.
Choose the number format and the statuses that issue invoices. When an order reaches such a status, the invoice is numbered and added to the status e-mail. Customers open it from their order page. Admins see an Invoices tab on every order, lists of invoices and credit notes, bulk print, ZIP and CSV, and add credit notes for items, shipping or an amount. The layout is edited in Design, Documents. On Multi-Vendor each vendor invoices its own orders and sees only its own documents.
| Package | kv_invoice_builder-1.0.1.zip, installed through Add-ons → Manage add-ons |
|---|---|
| Updates & support | 12 months included. Download new versions from your account and install them in Add-ons → Manage add-ons or the Upgrade Center. |
| License | 1 production installation. Staging, dev and localhost are free and unlimited. The add-on keeps working after the update period ends. How licensing works |
We list only the builds we install and test on. “Tested” means the full test plan was run on that build; “Supported” means the build is inside the supported range and uses the same hooks.
| CS-Cart version | CS-Cart | CS-Cart Ultimate | Multi-Vendor | Multi-Vendor Ultimate |
|---|---|---|---|---|
| 4.22 and later | Testing next | Testing next | Testing next | Testing next |
| 4.21.2 | Supported | Supported | Supported | Supported |
| 4.20.x | Supported | Supported | Supported | Supported |
| 4.19.x | Supported | Supported | Supported | Supported |
| 4.18.x | Supported | Supported | Supported | Supported |
| 4.17.2 | Tested | Supported | Tested | Supported |
| Before 4.17.2 | Not supported | Not supported | Not supported | Not supported |
| PHP | CS-Cart or CS-Cart Multi-Vendor 4.17.2 – 4.21.x, PHP 7.2.5 – 8.3 (as supported by your CS-Cart version) |
|---|---|
| Requirement | MySQL or MariaDB with InnoDB tables (the default). The number counter uses database transactions |
| Requirement | Optional: the core PDF documents add-on for PDF files, the core RMA add-on for credit notes on returns, our EU VAT Validation add-on for VAT numbers, our Customer Wallet & Store Credit add-on for credit notes on wallet refunds |
| Core changes | None. Hooks and template overrides only |
kv_invoice_builder_document_issued($doc) after a new invoice or credit note was issued, so other add-ons (EU e-Invoicing) can react at once, e.g. to credit notes issued by hand.Tested on Multi-Vendor 4.17.2, CS-Cart 4.17.2. No breaking changes.
{{ kv_invoice.number }}, date and credit_notes variables for the core order documents.Tested on Multi-Vendor 4.17.2, CS-Cart 4.17.2. First release.
No. Each number is taken inside a database transaction that locks the series counter, inserts the document and moves the counter together. If anything fails, nothing is saved and the number is not used. We test this with many parallel processes issuing invoices and credit notes at the same time.
No. Existing orders get an invoice only when they next reach an "issue invoice" status, or when you use Orders → Invoices → Invoices for existing orders on purpose.
No, by design. An issued invoice keeps its number and content, even when the order, the product or your company details change later. Corrections are made with credit notes. The layout (Design → Documents) can be changed at any time and applies to all documents.
Yes. Set First number of a new series to the next number you need before the first invoice of the series is issued (for example 1043), and use the same format.
With numbering per vendor, every vendor is the seller of its own orders and has its own series, so INV-2026-00001 exists once per vendor. Add {VENDOR} to the format (for example INV-{VENDOR}-{YYYY}-{N}) if you want numbers that are unique across the marketplace, or choose Marketplace numbering.
The add-on helps you keep sequential invoices with consistent content; it does not know the rules of each country. Check with your accountant which details your invoices need, and add them with the texts, the seller tax ID and the template.
PDF files are created by the core PDF documents add-on, which uses the CS-Cart PDF conversion service. Activate it in Add-ons → Manage add-ons. Without it, the print view works everywhere and the browser can save it as a PDF.
In the currency the customer used for the order, with the exchange rate of the moment the document was issued. The lists and the CSV also show the totals in your base currency. Additional credit amounts are entered in the base currency.
Only the customer of the order can open its documents, after signing in (guests need the access to that order, as for the order page). Check that Customers can open their documents is on. Documents of deleted orders are not shown to customers.
Without a valid license (no key after the 14-day start period, an invalid or revoked key, a domain the license does not cover, or no successful check for 14 days), no new invoice or credit note numbers are issued and nothing is attached to e-mails. Invoices and credit notes issued so far stay viewable, printable and downloadable for you, your vendors and your customers. Once the license is valid again, invoice the orders of that period with Issue invoice now or the tool for existing orders.
Open Add-ons → Manage add-ons → Invoices & Credit Notes → Settings → License. The status line says what is wrong: no key, a key for another add-on, a revoked license, or a domain that the license does not cover. Fix it and click Check now. See License.
Yes. Subdomains of your licensed domain (for example staging.yourstore.com) and local development hosts (localhost, private IP addresses, .local, .test) are covered by the same license.
No. The check runs in the admin panel or from cron, once a day. The storefront never runs it.
Add a released add-on to this order and save 15% on it. It uses the same edition and store domain.
Available now and coming next, tested on the same CS-Cart builds.
Show YouTube, Vimeo and MP4 videos right in the product image gallery, with no third-party requests until the shopper clicks play.
Show shoppers how close they are to free shipping, a gift or a discount, with live progress in the mini-cart, cart, checkout and a sticky bar.
Let vendors pause their store for a vacation with dates, a message and automatic return, without angry customers or cancelled orders.
Everything we are building next for CS-Cart and Multi-Vendor, with planned prices. Leave your email on any add-on and we write once when it ships.
