In Spain, unmarried couples account for around 9% of families and are no longer seen as a temporary arrangement until marriage. Many young people choose this form of cohabitation, and some older couples also decide to live together as unmarried partners on a long-term basis in order not to lose their respective pensions.
Registering as a civil partnership (see our section on how to register a civil partnership) is mainly about regulating financial matters. Each partner contributes to the household economy, usually in proportion to their income, but this is not the same as the community property system that applies to marriage.
Other issues to consider include how assets acquired during the partnership are owned and managed, which depends on the rules of the Autonomous Community where the partnership is registered.