Age of Sexual Consent in Spain: 16 Years

Since 2015, the age of sexual consent has been 16. As specialist criminal lawyers, we explain the key points: what the age of consent actually means, the offences involved, the Romeo and Juliet exception and the defence of mistake as to age.

Legal Framework

The age of consent marks the threshold below which the law treats a minor's consent to sexual acts as legally invalid. The practical consequence is drastic: below 16, it does not matter that the minor agreed, took the initiative or considered the relationship genuine — their apparent consent has no exonerating effect, and the adult's conduct constitutes an offence.

The penalties depend on the nature of the acts:

• Acts without penetration (Art. 181.1): 2-6 years.
• Acts with penetration (Art. 181.4): 8-12 years.
• Grooming (Art. 183): 1-3 years, for contacting a minor through technology in order to arrange a sexual encounter.

These figures explain why cases in this area are so sensitive: conduct that the persons involved may have experienced as a consensual relationship can carry penalties comparable to those for the most serious offences in the Criminal Code.

The Romeo and Juliet Exception

Art. 183 bis: it is not an offence where the persons are close in age and maturity, with no violence, deception or abuse of a position of superiority. The rationale is straightforward: the purpose of the age of consent is to protect minors from adults, not to criminalise relationships between adolescents or near-peers who are at a similar stage of development.

The exception requires all of its conditions at once. Closeness must exist both in age and in degree of maturity — a small age gap does not help if there was a marked imbalance between the two people. And the relationship must be free of any distorting factor: violence, deception or the abuse of a position of superiority, such as relationships of authority or dependence. Where any of those elements appears, the exception falls away entirely.

Court Criteria

The provision does not fix a numerical limit, so the courts assess each case individually. A difference of 1-2 years is acceptable; 4 or more is problematic. Between those reference points, everything depends on the specific circumstances: the maturity of each person, the existence of a prior relationship and the absence of pressure are assessed.

This case-by-case approach cuts both ways. It means there is no automatic safe harbour — no one can rely on a fixed age gap as a safe margin — but it also means the defence has real room to work: evidence about how the relationship arose, how the two people interacted and how balanced it actually was can be decisive in bringing the case within the exception.

Mistake as to Age

The second key defence is the mistake as to the minor's age, and its classification matters enormously. An unavoidable mistake — one that any reasonable person would have made in the same circumstances — excludes liability altogether. An avoidable mistake — one that could have been detected with more care — reduces the penalty.

To decide which applies, the courts look at objective indicators: physical appearance, social media profile and behaviour are assessed, together with what the minor said about their age and the context in which the two people met. A defence based on mistake must therefore be built on evidence, reconstructing exactly what the accused could and could not know at the time.

Defence in These Proceedings

In practice, the defence in this type of case moves along the two paths described: establishing the factual conditions of the Romeo and Juliet exception, or demonstrating a reasonable mistake as to age — and, in both, the early gathering of evidence is critical. Messages, profiles and witness accounts of the relationship tend to lose availability over time, and they are precisely the material on which both defences stand. The exception and the mistake of age are technical arguments that must be raised and proven properly from the first stages of the proceedings.