Declaring foreign income in Spain

Overview

One of the most commonly misunderstood rules for newcomers is that Spanish tax residency means Spain taxes your worldwide income — not just what you earn in Spain. This guide explains what counts and how relief for tax already paid abroad works.

Requirements

• Applies to anyone who is a Spanish tax resident, regardless of where the income is actually earned or paid

Step-by-step process

• Identify every income source you have, wherever in the world it's earned — employment, self-employment, rental income, pensions, dividends, interest and more all generally count
• Convert foreign currency income to euros using the appropriate exchange rate for the relevant period
• Check whether a double taxation agreement between Spain and the source country affects how that specific income type is taxed — see our guide to double taxation agreements
• Declare all of it on your annual Spanish tax return, claiming any available credit for foreign tax already paid on the same income under the relevant treaty

Required documents

• Records of all foreign income sources for the tax year
• Proof of any foreign tax already paid or withheld

Common mistakes

• Assuming income never transferred to a Spanish bank account doesn't need declaring — Spanish tax residency taxes worldwide income regardless of where it's held or paid
• Not claiming the foreign tax credit you're entitled to under a relevant treaty, effectively paying more than necessary

Practical tips

• Keep organised records of foreign income and any tax paid abroad throughout the year, not just when your Spanish filing deadline approaches — reconstructing a full year's foreign records at the last minute is one of the most common sources of errors
• Rental income from property abroad is a particularly common oversight for newcomers — it generally needs declaring in Spain even if it's also taxed in the country where the property is located

How Tuchati can help

If you have income from outside Spain and aren't sure how it should be declared, Tuchati can help you understand the general framework for your situation.