Invoicing in Spain 2026: The Complete Guide for Freelancers and Businesses

Successfully closing a deal in Spain is only half the battle. To get paid and stay compliant with the Agencia Tributaria, you must navigate a specific set of rules regarding IVA, IRPF withholding, and upcoming digital standards.

Whether you are a local Autónomo or an international partner, this guide eliminates the "gray areas" of Spanish invoicing for 2026.

1. When is an Invoice Mandatory? (Obligación de facturar)

In Spain, the obligation to issue an invoice is regulated by the Agencia Tributaria. You must issue an invoice if:

• You provide services to another business (B2B) or Autónomo.
• you are involved in intra-community EU transactions.
• You are performing an export of goods or services to a non-EU customer.
• Your client explicitly requests one for tax purposes.
• Note: For small B2C retail (e.g., a coffee shop), a simplified receipt is common, but a full invoice must be issued if the customer asks.

2. Types of Spanish Invoices (Tipos de factura)

• Factura Completa (Ordinaria): The standard document containing all legal data.
• Factura Simplificada: Used for amounts under €400, or up to €3,000 in specific sectors (e.g., restaurants, taxis, transport, and parking).
• Factura Rectificativa: The mandatory mechanism to correct errors or process returns. Never simply delete an invoice; you must issue a rectificativa to maintain a clean audit trail.
• Factura Recapitulativa: Used to bundle multiple operations for the same client into a single monthly bill.

3. Mandatory Invoice Fields

Every Factura Completa must include:

• Invoice Number & Series
• Issue Date and Date of Operation (if different).
• Tax ID (NIF/CIF): For both the provider and the client.
• Legal Addresses: Full addresses for both parties.
• Description of Services: Clear breakdown of work.
• Tax Rates: Applicable IVA and/or IRPF rates.
• VAT Amount: Clearly stated in Euros.

4. Mastering Invoice Numbering & Timing

• Series: You can use different series for organization (e.g., 2026-EU-001 for Europe and 2026-R-01 for corrections). Numbers must be sequential within each series.
• The 16th Day Rule: For B2B transactions, you must issue the invoice no later than the 16th day of the month following the service. For B2C, it is generally issued at the moment of the transaction.

5. Working with the EU: ROI & VIES

If you bill B2B clients in the EU, you must register in the ROI (Registro de Operadores Intracomunitarios). Once approved, your VAT ID appears in the VIES system. This is the legal prerequisite for applying the Reverse Charge (0% VAT).

6. When is VAT (IVA) NOT Applied?

1. EU B2B: If both parties are VIES-registered (Reverse Charge applies).
2. Non-EU Business Customers: Services supplied to a business customer outside the EU (e.g., US or UK).
3. Exemptions: Certain medical, educational, and insurance services.
4. Reverse Charge Note: When VAT is not charged, the invoice must include the phrase: "Inversión del sujeto pasivo" or "Reverse charge".

7. The 2026 Calculation: IVA vs. IRPF

As an Autónomo billing a Spanish company, your client must withhold income tax (IRPF) on your behalf.

⚠️ Crucial Rule: IRPF withholding only applies if your client is a Spanish resident business. If your client is located in the US, UK, or EU (outside Spain), do not subtract IRPF.

Calculation for a Spanish B2B client:

• Net Amount: €1,000.00
• + IVA (21%): + €210.00
• - IRPF (15%): - €150.00 (7% for new freelancers in their first 3 years)
• TOTAL TO PAY: €1,060.00

8. Payment Terms & Late Fees

Spain regulates payment terms to protect small businesses.

• Standard Term: 30 days.
• Maximum Legal Term: 60 days. Late payments can trigger automatic interest charges and compensation for recovery costs.

9. Connected Declarations & Storage

Your invoices directly populate the following forms:

• Modelo 303/390: Quarterly/Annual VAT.
• Modelo 130: Quarterly IRPF advance payments.
• Modelo 347: For client/provider relationships exceeding €3,005.06 annually.
• Archiving: You must store invoices for 4 years for tax purposes and 6 years for commercial law.

10. The Digital Shift: Verifactu

Spain is introducing the Verifactu standard for invoicing software to ensure data immutability and instant reporting. While the software requirements are finalized, mandatory compliance is expected to begin in 2027 for both companies and Autónomos. In 2026, it is wise to choose software that is already preparing for this standard (QR codes and hash-chains).

🚩 Common Freelancer Mistakes

• Applying IRPF to foreign clients: It is only for Spanish B2B.
• VIES Errors: Billing 0% VAT to an EU client before your ROI registration is active.
• Currency Issues: You can bill in USD or GBP, but the IVA amount must be converted to EUR using the European Central Bank rate.

Need a 2026-compliant Spanish template?