No. It can be very useful, but it must make genuine sense in light of the business activity, group structure, dividend policy, assets, and long-term objectives. The relevant tax framework is generally based, among other provisions, on Article 21 of the Spanish Corporate Income Tax Act (LIS) and the restructuring regime set out in Chapter VII of Title VII of the LIS.
In certain cases, yes. The Spanish Corporate Income Tax Act (LIS) expressly provides for a special regime applicable to mergers, spin-offs, contributions of assets, and share exchanges.