The 90-day rule
This rule simply states that you can live in Spain without residency for a maximum of 90 days. After those 3 months, you need to either obtain a residence permit, or leave the country. And that is because the shortest stay option is the tourist (or Schengen) visa, which lasts exactly for 90 days.
Spain is a party to the Schengen Agreement. This means that U.S. citizens may enter Spain for up to 90 days for tourism or business without a visa. Your passport should be valid for at least three months beyond the period of stay.
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Is €1,000 enough to live in Spain per month? Yes, it is possible to live in Spain with 1,000 euros a month, as the minimum wage is 1,080 euros. However, the freedom and comfort you will have with around 1,000 euros a month will depend on the city you will live in.
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