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Do US citizens working as contractors for a US company in Spain have to pay Spanish taxes in addition to US taxes?

Last Updated on March 18, 2026 by Bruno Bianchi

Question about Spanish taxes

As a US citizen working as a contractor for a US company while residing in Spain, what are the tax implications, and can you recommend a specialist to help with understanding potential Spanish taxes and obligations?

Answers

These are the answers of some Facebook group members:

”You will pay your taxes in Spain, including your Social Security payments which will like be a bit higher than in the US. There is a tax treaty so you will not pay double taxes. Take a look at an online calculator”

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“Here’s an online calculator for calculating the new self-employed (autónomo) Social Security contributions in Spain.”

Here you can find recommended experts for both Spain and US filings: https://spainguru.es/tax-experts-spain-and-us-filings/

In conclusion, according to Spainguru Facebook group members, if you’re moving to Spain, you’ll pay taxes and slightly higher Social Security payments compared to the US. But thanks to a US-Spain tax treaty, you won’t face double taxation. For guidance, check out an online tax calculator.

📖 Related Reading: For a complete overview of tax residency, income tax brackets, Beckham Law, Modelo 720, and more, see our Taxes for Expats in Spain: The Complete Guide.

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author avatar
Bruno Bianchi CEO & Spain Immigration Expert
Bruno Bianchi is the founder and CEO of Spainguru, Spain's largest expat immigration community with 150,000+ members. Since 2014 he has helped thousands of people relocate to Spain through expert guides, webinars and vetted professional services covering visas, residency, taxes and life in Spain.