E-invoicing in Spain with LSP.expert

New EU regulations will soon require businesses to adopt e-invoicing systems. While this might sound daunting, particularly if you’re self employed, LSP.expert has got you covered. We’ve been working away behind the scenes and have partnered with industry leaders in Spain and Belgium to make your transition to e-invoicing smooth and cost-effective (more countries are coming).

By rolling out this system across all member states, the European Union hopes to:

Businesses will be required to issue an e-invoice in specific situations (which vary by country).

Freelancers must also be able to receive e-invoices.

To comply with the new e-invoicing regulations, you’ll need to use a government-approved e-invoicing platform (PDP). These platforms are paid services, and prices vary depending on the number of e-invoices processed.

LSP.expert Partners with Cuéntica

LSP.expert is a comprehensive project management solution for translators and interpreters, and while hundreds of users send invoices daily through our platform, we're not an accounting software.

Rather than building expensive in-house e-invoicing (and passing costs to you), we've partnered with Cuéntica, a trusted e-invoicing specialist starting at €9/month (ex VAT).

First things first, go to Settings > Integrations and connect LSP.expert to Cuéntica.

Look for Cuétinca and click the Add button.

A dialog window will open where you can enter the API key for the Cuéntica integration. You can find or create your API key in the settings of your Cuéntica account.

Once Cuéntica is connected, LSP.expert will show the integration as Active. You’ll then need to map your LSP.expert clients to your Cuéntica clients. To do this, click the Options button.

Select from the drop down list the LSP.expert client that corresponds to your Cuéntica client. If the client doesn’t exist in LSP.expert, you can create it by clicking the Create button.

Note that a client must have a valid VAT number and address in order to be created in Cuéntica. If your client doesn’t have a VAT number, you don’t need to create a corresponding client in Cuéntica. You’ll still be able to synchronize invoices for that client without creating them in Cuéntica, the invoices will be assigned to a generic client in Cuéntica (Clientes sin determinar).
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Once your mapping is done, you can send your invoices to Cuétinca. To do that, go to your Invoices page and open an invoice. Click on the Actions button and select Create in Cuétinca:

This action may take a few seconds to complete. Once the invoice is sent to Cuéntica, you’ll see a new icon next to the invoice number.

You can also click the Actions button and select View in Cuéntica to open the invoice in Cuéntica.

The icon will also appear on the Invoices list page:

You can select multiple invoices, click on the "Actions" button and select Create in Cuétinca to send multiple invoices at once:

Note about the IRPF tax: When creating an invoice in LSP.expert, you might add an additional tax called IRPF (Impuesto sobre la Renta de las Personas Físicas) which is a withholding tax in Spain. This tax in LSP.expert is defined as a negative tax, meaning it reduces the total amount of the invoice.

When integrating with Cuentica, it's important to ensure that the IRPF tax is correctly identified and processed. To do this, the tax name in LSP.expert should include the string "IRPF" (case insensitive). This allows the integration to recognize it as the IRPF tax and handle it appropriately when sending invoice data to Cuentica.

At LSP.expert, we always prioritise our customers’ interests and we believe that transparency matters. When faced with mandatory e-invoicing requirements, we had two options:

We chose to protect you.

What: EU e-invoicing becomes mandatory for translators/interpreters

When: July 2026 (Spain)

How: LSP.expert + Cuéntica partnership = seamless compliance

Cost: From €9/month (ex VAT | no LSP.expert price increases)

Setup: 3 simple steps, full integration with your existing workflow

Bottom Line: Stay compliant without the complexity or inflated costs

E-invoicing compliance doesn't have to disrupt your workflow or drain your budget. With LSP.expert's seamless Cuéntica integration, you're not just meeting regulatory requirements - you're setting your business up for the digital future.

Our partnership approach means you get enterprise-level e-invoicing capabilities at freelancer-friendly prices, all while maintaining the project management tool you already love.

Don't wait until the deadline pressure hits.

Set up your e-invoicing solution today and join hundreds of language professionals who trust LSP.expert to handle the technical complexity while they focus on what they do best: delivering exceptional language services.

Get in touch at hello@lsp.expert!