Blog: Freelance & method | Amory Dumoulin
Modelo 303: Spanish Quarterly VAT — My First Three Filings
Modelo 303 is the quarterly VAT declaration every Spanish autónomo files by 20 January, 20 April, 20 July and 20 October. This guide combines the technical explanation with an honest account of my first three filings — mistakes avoided, numbers that surprised me, and what my gestor actually does. Written for Northern European and international expats working as self-employed in Spain.
Modelo 036/037: Your Birth Certificate as Autónomo in Spain
Modelo 036 or 037 is the census declaration that officially registers your business activity with the Spanish Agencia Tributaria. Without it, you don't exist fiscally. This guide explains the difference between the two forms, when to use which, what to fill in, and the common mistakes that create complications down the line — written for Northern European and international expats registering as self-employed in Spain.
Why working alone forces me to understand whole problems
Discover why my status as a freelance digital director forces me to analyze and optimize every link in your online ecosystem, from code to SEO.
The Art of Premium Digital Strategy
A concise look at how premium digital strategy blends performance, design systems, and clear execution.