Does Spain levy taxes on worldwide income? I'm particularly interested in understanding how this applies to various sources of income. For instance, does it cover income derived from employment, like salaries? Or pensions? Or perhaps income from renting properties? And could gambling profits also fall under this umbrella? Furthermore, I've heard that the Spanish income tax is comprised of both national and regional components. Could you elaborate on this? Finally, are there any exceptions to this rule, particularly with regards to savings income? I'd appreciate it if you could clarify these points for me.