Cross-border tax specialist for Hong Kong + Spain?

[aniglo22]

CGT for non-residents is 19%, and the buyer is required to withhold 3% of the sale price.
If the property wasn’t rented out, you also have to pay imputed income tax (2% or 1.1% of the cadastral value).
The buyer uses Form 211 to pay the 3% withholding tax to the Spanish tax authorities.
You then have 4 months to fill out form 210 and pay additional tax (if your profit exceeds the amount covered by the 3%, and the 3% is less than 19% of your gain), or to claim a refund (if you made a loss, or if 19% of your profit is less than the 3% withheld).
You can include expenses such as VAT, notary fees, and transfer tax.
(See more here : Agencia Tributaria - Modelo 210 Instructions).

Like already said , you will need an NIF/NIE to fill out the form.
What’s so hard about it?

 

[aniglo22]

Did I understand correctly, you're holding the properties under your own name? Then you will probably have to disclose to the Hacienda your worldwide income.
Even if the property is owned via a company, the sale will still be taxable in Spain. With real estate, it is always very simple.

Why would they want to know your worldwide income?
If you are a non-resident, there is either a specific CGT rate for non-residents, or you are subject to personal income tax (PIT) like a resident or under a specific non-resident scale , but only on income sourced from within the country.

 

[daniels27]

Why would they want to know your worldwide income?
If you are a non-resident, there is either a specific CGT rate for non-residents, or you are subject to personal income tax (PIT) like a resident or under a specific non-resident scale , but only on income sourced from within the country.

They won't. If you are not resident, they will consider the sale as a unique case and tax solely based on that. If you sell 2 houses at loss and 3 at gains, you will not be able to offset the losses with the gains.