Can I have a job contract in Spain and be self-employed at the same time?

Oct 1, 2025 - 18:00
 1
Can I have a job contract in Spain and be self-employed at the same time?
Picture this, you work as an employee in Spain, but you want to earn some extra money on the side through one of your own ventures to help pay for the rising costs of living. Are you allowed to have a contract and be self-employed at the same time?