Stock options vested in UK but sold in Italy

Hi, Let's assume I have stock options that were fully vested/or partially vested here in the UK. What would happen if I move to Italy and exercise them once I become a tax resident there? For the double tax treaty shall I just pay taxes in Italy? Or do I have to pay them in UK? What is the correct approach to avoid any problems? Regards

Hi

You would need to declare the disposal of stock/share options to HMRC, as they are taxed as income.  
Helpsheet HS305 provides more guidance on employment related shares and securitites
Employment-related shares and securities (Self Assessment helpsheet HS305)

Thank you

Interesting, but would I not get taxed twice in that case from Italy as well? Also if it is taxed as income and I don't earn any apart from this in the UK, I am assuming I would follow the classic bands: - 0% up to 12570 - 20% up to 50270 - 40% up to 125k, etc Is that correct, so anything below 12570 in a tax year where the only thing I earned are the earnings from selling the stock options would be 0%? Correct? Regards

Hi
The national tax rates are the same as those you mention.  
If you qulaify for personal allowances, these would also be included in any tax calculation.  
Have a look at the SA109 notes for boxes 15 and 16, to see if you can claim personal allowances.