Common Tax Errors for Freelancers and SMEs in Spain (2026-2027)

Common Tax Errors for Freelancers and SMEs in Spain (2026-2027)

As a freelancer or SME in Spain, managing your taxes can be a challenge. Lack of knowledge or insufficient rigor can lead to penalties and problems with the Spanish Tax Agency (AEAT). With the current reference date (July 2026), it's crucial to stay updated on upcoming changes, especially regarding electronic invoicing.

Below, we detail some of the most common tax errors and how to avoid them.

1. Incorrect VAT (IVA) Management

One of the most widespread errors is the incorrect application of VAT (IVA). This includes:

* Not deducting all eligible input VAT: Many freelancers forget to deduct expenses related to their activity, such as utilities, office supplies, or fuel. It's vital to keep all invoices.

* Applying incorrect VAT rates: Confusing the general rate (21%), reduced rate (10%), or super-reduced rate (4%) can lead to incorrect settlements.

* Not filing declarations on time: Forms 303 (quarterly) and 390 (annual) have strict deadlines.

2. Misunderstanding Income Tax (IRPF) and Quarterly Payments

Personal Income Tax (IRPF) is another critical area. Freelancers (sole traders) must make quarterly estimated payments (Modelo 130 or 131). Common errors include:

* Not making advance payments: Thinking that tax is only paid annually is a serious mistake.

* Not withholding IRPF on invoices (if applicable): If you invoice other freelancers or companies, and your activity is subject to withholding, you must apply the corresponding percentage.

3. Failure to Meet Deadlines and Tax Obligations

The AEAT has a very defined tax calendar. Ignoring deadlines can result in surcharges and fines. It's essential to have a tax calendar handy and use reminders. This includes not only VAT and IRPF but also other taxes like Corporate Tax for SMEs.

4. Lack of Proper Documentation and Record-Keeping

Poor accounting and inadequate invoice records are a source of problems. In the event of an inspection, the Tax Agency will demand documentation to support every operation. Missing invoices or incorrect issuance can invalidate deductions and lead to penalties.

5. Failure to Adapt to Electronic Invoicing (VeriFactu)

Tax digitalization is an imminent reality in Spain. Law 18/2022 on the creation and growth of companies, known as the Anti-Fraud Law, establishes mandatory electronic invoicing.

* For companies and legal entities, the deadline to adapt is January 1, 2027.

* For freelancers (autónomos) and micro-SMEs, mandatory compliance will begin on July 1, 2027.

Not being prepared for when VeriFactu is mandatory and not using an electronic invoicing for freelancers in Spain system that complies with the technical requirements (VeriFactu) will be a costly mistake. These systems ensure the immutability and traceability of invoicing records, sending data to the AEAT in real-time.

Avoid Errors and Ensure Your Tax Peace of Mind

To avoid these errors, it's advisable to seek professional advice and use tools that automate and simplify tax management. Staying informed about legislative updates is key.

At Fakturia.es, we understand the complexity of regulations. Our invoicing software is designed for freelancers and SMEs, fully adapted to the Anti-Fraud Law and VeriFactu requirements, ensuring your business complies with all obligations effortlessly.