The Forensix Blog
Plain-English guides to UK and Spanish tax for British freelancers and expats. No jargon, no fluff.
20 June 2026Do you need a gestor, or can you file Spanish tax yourself?
An honest look at whether a British expat in Spain needs a gestor or can handle their own IRPF and autónomo filings. When DIY is fine, when it isn't, and how to cut your gestor's fee either way.
19 June 2026Autónomo social security and the tarifa plana in 2026: what you'll actually pay
How Spanish autónomo social security works in 2026: the 15-bracket income-based system, the €80/month tarifa plana for new autónomos, and how it fits alongside UK National Insurance for British freelancers.
18 June 2026Modelo 100: the 30 June deadline survival guide for expats (2026)
Spain's annual income tax return (Modelo 100, la Renta) is due 30 June 2026. What it is, who has to file, what you need ready, and how to avoid the last-minute panic if you're an expat.
17 June 2026The British Autónomo's Guide to UK + Spain Dual Tax (2026)
Living in Spain, earning from the UK? Here's exactly how UK + Spain dual tax works for British autónomos in 2026: residency, what you file where, and how to avoid paying twice. Plain English.
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