A VAT invoice in Spain — a factura con IVA — does two things at once: it asks your client to pay and it shows the tax authorities the sale was correctly taxed. For freelancers and contractors billing Spanish clients, this document is what keeps cash coming in and keeps you on the right side of the Agencia Tributaria. Get the mandatory fields right and the invoice is enforceable; miss one and it can be rejected for IVA purposes.
What to include
Every valid Spanish VAT invoice must carry a set of mandatory details. You need your NIF number, the client's VAT number for B2B sales, the número de factura (invoice number), the fecha de expedición (issue date), and the IVA desglosado (VAT broken down per line). Leave any of these out and the document is harder to enforce — and, where tax is involved, it can be invalid for IVA.
How the VAT calculation works
Spanish invoices require your NIF, the customer's VAT number on B2B invoices, and IVA per line. The standard rate is 21% (the rate this template applies), with reduced rates of 10% and 4% for specific goods and services. When you bill a business customer in another country, check whether the reverse-charge or zero-rating rule applies before you finalise the total — it changes how much IVA you show.
Example line items
Invoice
Spain VAT invoice
- Invoice no.
- INV-2026-014
- Date
- 2026-07-15
From
Your Company
123 Business Rd, Your City
VAT No.: ES123456789
To
Client Name
Client Company, Client City
| Description | Qty | Rate | Amount |
|---|---|---|---|
| App development | 1 | €4,000.00 | €4,000.00 |
| Maintenance – monthly | 3 | €200.00 | €600.00 |
- Subtotal
- €4,600.00
- VAT (21%)
- €966.00
- Total
- €5,566.00
Notes
Payment within 30 days. Gracias.
Example preview — not a real invoice
A typical VAT invoice lists concrete work like this:
- App development — 1 × €4,000
- Maintenance, monthly — 3 × €200
Always show the quantity, unit price, and the tax amount per line so the grand total is transparent and easy for your client to verify.
Practical tips
A few habits keep freelancers safe. Issue simplified invoices only when you are under the legal threshold. Keep invoices for 4 years — 10 for some records — under Spanish retention rules. State the IVA breakdown clearly on every line. Consistent numbering, clear payment terms, and prompt delivery all reduce late payments and build trust.
Done well, a Spanish VAT invoice is simple paperwork that keeps your business legitimate and paid. Cover the fields above each time and you can invoice with confidence. The invoice generator pre-fills these details so the maths take care of themselves.