Spanish Tax Residency, as the Law Writes It
Spanish tax residency is set by one article. Ley 35/2006, the personal income tax act, article 9.
It lists two tests. Meeting either one is enough, and most people only ever hear about the first.
The first is the day count, more than 183 days in the calendar year. The second has no day count at all and turns on where your economic life sits.
This page sets out what that article says. It does not tell you whether it applies to you, because that depends on facts about your year that no page can see.
More than 183 days in the calendar year
The wording is short. A person is resident who "permanezca más de 183 días, durante el año natural, en territorio español".
Two details in that sentence do a lot of work. It is the calendar year, not a rolling twelve months. And it is more than 183, not 183.
People plan against a number they half remember, from a country whose rule works differently. The number here belongs to this article and to this year.
Two independent tests, and most planning only ever accounts for one of them.
Book Your Assessment CallDays you spend outside Spain can still count
This is the clause that surprises almost everyone, and it sits in the same paragraph as the 183.
"Para determinar este período de permanencia en territorio español se computarán las ausencias esporádicas, salvo que el contribuyente acredite su residencia fiscal en otro país."
In plain terms, the law says sporadic absences are counted into the period, unless the taxpayer establishes tax residency in another country.
So leaving is not by itself subtraction. The article treats time away as part of the count until something else is established elsewhere.
That is why "I was only in Spain five months" and "I am not Spanish tax resident" are two different statements, and why people who believe the first are sometimes surprised by the second.
The one with no day count
The second test does not mention days at all. A person is resident where "radique en España el núcleo principal o la base de sus actividades o intereses económicos".
The principal centre or base of economic activities or interests. That is a question about where your economic life actually sits, not about a calendar.
It is also why a day count alone can be a misleading thing to plan around. The article offers two independent doors, and either one is enough.
What counts as the principal centre in any particular case is exactly the kind of question that turns on specifics, and this page does not answer it.
Family, and what the article assumes
Article 9 also carries a presumption. Where a spouse not legally separated and minor children who depend on that person are resident in Spain, the taxpayer is presumed resident too.
A presumption is not a verdict. The article allows it to be rebutted by proof to the contrary.
But it does change who has to demonstrate what, and that is a meaningful difference to anyone whose household stayed behind.
The article is the starting point. Where you actually stand is a conversation.
Book Your Assessment CallWhere the article asks for more
One more sentence is worth knowing, because it changes the burden rather than the rule.
"En el supuesto de países o territorios considerados como paraíso fiscal, la Administración tributaria podrá exigir que se pruebe la permanencia en éste durante 183 días en el año natural."
Where the destination sits on that list, the article allows the administration to require proof of 183 days actually spent there.
Which lists apply and how they are maintained changes over time, so that is a question to put to someone looking at the current position rather than an article.
What this page deliberately does not do
It does not tell you whether you are Spanish tax resident. That is a conclusion about your year, and a page that reaches it for a stranger is doing something it cannot do safely.
It does not say what evidence any tax authority accepts. That is a claim about how an administration behaves, and nobody outside it can make that claim honestly.
It does not describe how to stop being resident. Where a residency ends and another begins is a matter of facts, timing and another country's rules at the same time.
What it does is put the actual text in front of you, so that the next conversation you have starts from the article rather than from a number someone repeated at dinner.
Where a structure sits alongside all of this is a separate question, and the US LLC guide covers why a company is not what determines your tax in the first place.
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FAQ
How many days make you a Spanish tax resident?
Do days spent outside Spain reduce the count?
Can you be Spanish tax resident on under 183 days?
What does the article say about family?
Does this page tell me whether I am resident?
Where you actually stand
The assessment call is where the specifics get looked at, including the ones with uncomfortable answers, and where a structure does or does not help. Free, qualified, and direct about what applies to you.
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