Blog

Guides, tips, and news about invoicing and taxes in Spain.

Tips2025-10-219 min read

How to Register as an Autonomo in Spain: Complete 2026 Guide

Everything you need to register as a self-employed worker in Spain in 2026: tax authority, social security, fees, and invoicing software.

Verifactu2025-11-128 min read

What is Verifactu? Complete guide for 2027

Everything autonomos need to know about Spain's mandatory electronic invoicing system launching July 2027.

Taxes2025-11-265 min read

How Much IVA to Charge in 2026: Rates and When Each Applies

Clear guide to IVA types for freelancers in Spain: standard 21%, reduced 10%, super-reduced 4%, and exempt. When each one applies.

Verifactu2025-12-026 min read

Verifactu Fines: Up to EUR 50,000 for Non-Compliance

How much do you risk if you don't comply with Verifactu? The Anti-Fraud Law sets concrete penalties. Here are the real numbers.

Taxes2025-12-176 min read

How to prepare your Modelo 303 (quarterly IVA)

Step-by-step guide to understanding and preparing your quarterly IVA declaration as a Spanish autonomo.

Taxes2026-01-075 min read

Modelo 130: What It Is and When to File It

Modelo 130 is the quarterly IRPF installment payment for freelancers in direct estimation. Deadlines, calculation, and how to pre-fill it automatically.

Invoicing2026-01-155 min read

Legal requirements for autonomo invoices in Spain

The mandatory fields every Spanish freelancer invoice must include to be legally valid under RD 1619/2012.

Comparison2026-01-288 min read

Best Invoicing Apps for Freelancers in Spain 2026

Comparison of the main invoicing apps for autonomos in Spain: k-factu, Holded, Quipu, Billin, and Contasol. Which is best for you?

Comparison2026-02-117 min read

k-factu vs Quipu: Full Comparison for Freelancers

Quipu is one of the most established options for freelancers in Spain. We compare price, Verifactu, OCR, UX, and more so you can choose wisely.

Tips2026-02-205 min read

Digitize Your Receipts: How OCR Works in Invoicing Software

Stacking paper receipts in a drawer is the most common freelancer mistake. OCR extracts the data automatically: supplier, amount, IVA. Here's how k-factu does it.

Tips2026-02-276 min read

Complete guide to deductible expenses for autonomos

Which business expenses can you deduct as a Spanish freelancer? IVA soportado, IRPF, and common pitfalls.

Invoicing2026-03-036 min read

Intra-EU IVA: How to Invoice European Clients as a Spanish Freelancer

More and more freelancers invoice EU clients. The reverse charge rule, Modelo 349, and everything you need to know — explained simply.

Comparison2026-03-067 min read

k-factu vs Holded: which is better for autonomos?

Detailed comparison of k-factu and Holded for Spanish freelancers. Features, pricing, and Verifactu readiness.

Comparison2026-03-096 min read

k-factu vs Billin: Which Is Better for Freelancers?

Billin is the cheapest on the market. But is what you save worth it? We compare Verifactu, OCR, support, and real price for freelancers.

Tips2026-03-117 min read

Freelancer vs Limited Company in Spain: When Does an SL Make Sense?

It's the question every growing freelancer asks. The answer is mathematical but also strategic. We give you the real numbers.