When you sell a property in Spain there is a requirement for 3% of the value of the property to be paid to the tax authorities as a retention if you are non-resident in Spain. There is a lot of misunderstanding regarding this 3%. Some people think that this is a tax on the seller. Some people think that this is an extra cost to the buyer. Some people refer to this as a Withholding Tax. None of these is correct.
For more information on 3% Retention Tax click here