Verifactu para WooCommerce – Finseed

Automatic Verifactu invoicing for every WooCommerce sale and refund. Finseed turns your orders and refunds into compliant invoices, submits them to the Spanish tax agency (Agencia Tributaria, AEAT) and sends them to your customers. You keep selling. Finseed takes care of the invoices.

If your business invoices in Spain and sells through WooCommerce, Finseed is built for you. It covers sales in mainland Spain, the Canary Islands, Ceuta, Melilla, the European Union and the rest of the world, whether you sell goods or services.

No digital certificate. No extra PDF invoice plugin. No manual invoicing for routine WooCommerce sales.

Explore Finseed for WooCommerce

What is Finseed?

Finseed is a complete Verifactu invoicing service for e-commerce. It decides which invoice and tax treatment each sale needs, checks the order before issuing anything and keeps the entire invoicing record ready for you and your accountant.

At a glance:

✅ Automatic invoices for orders and full or partial refunds ✅ Verifactu submission to the AEAT, with the required QR and fingerprint ✅ Correct IVA, IGIC, IPSI, OSS, reverse charge and export treatment ✅ NIF/CIF capture and validation at checkout only when needed ✅ Full, simplified and corrective invoices in one service ✅ Branded invoices, customer delivery and self-service downloads ✅ Clear reports and PDF or Excel exports ✅ Unlimited free test mode before your first real invoice

Use Finseed free forever in test mode, with no card, until you feel confident going live. Real invoicing and submissions to the AEAT start at €14.95/month, with no annual commitment.

See features, pricing and customer stories

Every order and refund invoiced automatically

Choose which WooCommerce order status should trigger invoicing. When an order reaches that point, Finseed creates the correct full or simplified invoice, submits it to the AEAT and can email it to your customer with your logo.

A full or partial refund creates the matching corrective invoice automatically. If one item from a three-item order is refunded, Finseed corrects that item and its taxes. Corrective invoices are included in every plan.

If customer or tax data needs attention, Finseed pauses the invoice and tells you what to correct before anything incorrect reaches the AEAT.

Learn how Finseed works with WooCommerce

The right tax treatment wherever you sell

Finseed classifies each order line using your business location, the customer’s location and tax status, and whether you sold goods or services. This covers:

• IVA at standard, reduced and super-reduced rates.
• IGIC and IPSI for the Canary Islands, Ceuta and Melilla.
• OSS for distance sales to consumers in the European Union.
• Reverse charge for qualifying sales to European Union businesses, including VIES validation.
• Export exemptions and the correct place-of-supply rules for international goods and services.
• Recargo de equivalencia when the sale requires it.

Each invoice also receives the legal mentions required for its operation. You do not need to maintain tax rules or invoice templates for every destination.

Ask for the NIF without adding friction to every checkout

Finseed adds an invoice request and NIF/CIF field to both the classic and block checkout. Buyers provide their tax details when they need a full invoice, while other customers can complete their purchase without unnecessary fields. The tax number is checked before payment so you can correct it before invoicing.

No digital certificate and no patchwork of plugins

Finseed is an AEAT colaborador social, so we submit your invoices with our own certificate. You do not need to obtain, install, renew or share a digital certificate.

One service covers full and simplified invoices, corrective invoices, customer emails, your logo, legal mentions, reports and exports. You do not need to buy a separate PDF invoice or corrective invoice extension.

Finseed publishes its Verifactu responsible declaration, the document Spanish law requires from invoicing software providers.

Your invoices and numbers stay under your control

See revenue, invoices, corrective invoices and exempt operations by period. Export your records to PDF or Excel whenever your accountant needs them.

You can continue an existing invoice series when you move to Finseed, even in the middle of the year. You can also create invoices for sales outside WooCommerce and connect several stores to the same business.

Your records remain available if you cancel, and you can export them whenever you want. A future tax inspection should not depend on keeping a subscription.

What customers say

“Very simple and practical, automatic tax filing. Lets you generate manual invoices too, and it integrates perfectly with our store. They handle every doubt quickly and adapt the system to your needs. It was a great call to trust them for our Verifactu compliance.” CoralMastery

“A modern, reliable app, very well integrated with our store. Support is flawless. An ideal choice, highly recommended for Verifactu compliance.” Mokari

“Finseed was the only solution that really convinced us: it generates invoices from orders automatically, with no manual work. They respond fast, listen to feedback, and it shows that they keep improving the product.” LaStefani.com

Discover Finseed for WooCommerce

Start in three steps

1. Install and activate the Finseed plugin.
2. Create your Finseed account and pair your store.
3. Review your invoices in unlimited free test mode, then activate real invoicing when you are ready.

Start free

External services

This plugin depends on the Finseed service to work, and therefore sends data to Finseed (operated by the company behind https://finseed.es). No other third-party service is contacted.

Data moves between your store and Finseed in three distinct ways:

1. Finseed API (https://woo.finseed.es) Used to connect your store and to validate the NIF/CIF entered at checkout.

   • When: when you connect the plugin on the settings page, and every time a buyer enters a NIF/CIF during checkout.
   • Data sent when connecting: an installation identifier generated by the plugin, your store address, your store name, the platform name and the plugin version. Approving the connection in your browser returns an access token and a signing secret. The signing secret stays on your store and is never sent anywhere.
   • Data sent for tax ID validation: the buyer’s NIF/CIF, their name or company name, and the billing country.

2. Finseed order notifications (https://woo.finseed.es) A notification that something happened, so Finseed knows to build an invoice.

   • When: when an order is created, updated, changes status or is refunded.
   • Data sent: the WooCommerce order ID, the order number and the order’s creation and last-modified dates. This particular event carries no customer or line-item data.

   Every request after connecting carries your store’s access token and a signature calculated from the signing secret, so Finseed can confirm the request really came from your store.

3. WooCommerce webhooks and order retrieval The notification above carries only identifiers, so the order itself reaches Finseed two further ways. Finseed registers WooCommerce’s own webhooks in your store pointing at https://<finseed host>/api/woocommerce/webhooks, and WooCommerce delivers the complete order or refund payload to them directly. Finseed also reads order and refund records back from your store’s WooCommerce REST API (/wp-json/wc/v3/...) using the credentials established when you connected, to build an invoice or to reconcile one.

   • When: on each order or refund change, and whenever an invoice has to be built, rebuilt or reconciled.
   • Data transferred: the complete order and refund records. That includes the customer’s name and contact details, billing and shipping addresses, line items, tax lines, totals, currency and payment-method metadata. This is the data that appears on the invoice and in the Verifactu record.

Finseed may also call your store on an authenticated endpoint to confirm the connection is healthy and read the installed plugin version, so it can tell you when an update is available. These requests are signed with the connection’s secret; the version is never exposed publicly.

By connecting the plugin to your Finseed account you accept Finseed’s Terms and Conditions and Privacy Policy:

• Terms and Conditions: https://www.finseed.es/terminos-y-condiciones
• Privacy Policy: https://www.finseed.es/politica-de-privacidad

Data the plugin stores in your store

The plugin generates an installation identifier and stores it in the WordPress options, under finseed_install_id. It is a random 32-character value. It holds no personal data, does not describe your store, and is not derived from your web address or from any business data. It exists to identify this installation in a stable way, and it is sent to Finseed when you connect your store, so that reconnecting later is recognised as the same installation rather than a new one.

When you connect your store, the access token and signing secret returned by Finseed are stored in the WordPress options under finseed_connection.

When your store is connected, the plugin also creates a WooCommerce REST API key so that Finseed can read your orders, and keeps a record of it in the WordPress options under finseed_key_provisioning.

The identifier is always kept when you uninstall the plugin. That is deliberate: it lets a reinstall reconnect as the same installation instead of appearing as a new store.

Uninstalling tells Finseed to close the connection. When Finseed confirms it is closed, the plugin deletes the REST API key it was using, and deletes the stored connection and the key record as well. If Finseed cannot be reached at that moment, nothing is deleted: those records are the only way a reinstall can close that connection later, and the REST API key stays until it can.

In the rare case where the key record still names a key the plugin could not delete, that record is also kept, so that a reinstall can finish removing it.

The rest of the plugin’s data (your settings) is deleted on uninstall, so after reinstalling you will have to set your options again. Responses the plugin caches temporarily are also deleted from the database; if your store uses an external cache such as Redis or Memcached, those responses are not deleted at that moment, but they expire on their own within five minutes at most.

If you want to remove the identifier, and anything the steps above kept, delete them by hand after uninstalling the plugin:

Check WooCommerce, Settings, Advanced, REST API as well, and revoke any key named for Finseed that is still listed there.

License

This plugin, all bundled libraries and any other included assets are licensed under the GNU General Public License version 2 or later (GPL-2.0-or-later), or under a GPL-compatible license. The bundled JavaScript builds on the WordPress and WooCommerce packages provided by WordPress core, together with our own code and tooling under GPL-compatible licenses such as MIT. No third-party PHP libraries are bundled.

A copy of the GPLv2 is included in license.txt and available at https://www.gnu.org/licenses/gpl-2.0.html.

Source code and build process

This plugin ships with its complete, human-readable source code. The compiled JavaScript in assets/js/build/ is generated from client/:

• assets/js/build/settings-page.js is compiled from client/settings-page/index.jsx
• assets/js/build/legacy-checkout.js is compiled from client/legacy-checkout/index.js

The build uses @wordpress/scripts (webpack and Babel), configured in the bundled webpack.config.js, babel.config.js and package.json. To rebuild from source, run pnpm install --frozen-lockfile then pnpm build from the plugin directory.