Taxes are the same for any resident or nonresident. However, the double taxation convention between your country and Portugal (if any) will need to be reviewed.
Ask A Question | Learn more about Portugal
What types of tax liabilities do I need to fulfill if I make a capital transfer to Portugal for my Golden Visa application?
I plan to make an investment in a venture capital fund in Portugal and use this for my Golden Visa application. Will such investment trigger any tax liabilities if I don’t live in the country for the most time of the year? If so, what are the taxes?