These countries clearly recognise the economic contribution wealthy non-doms generate and how easy it is for them to move.
The current longer period of being able to claim the remittance basis allows people to lay down roots and encourages them to stay here long term. Four years however is not long enough to educate children and for most people to become sufficiently attached to the UK to begin paying tax on a worldwide basis.
Some of the wealthiest non-doms have openly stated that they would be prepared to stay in the UK and pay more tax than they currently do, by paying a flat rate of tax each year for a set number of years (similar to the current 10-year regime in Italy).
They would be prepared to pay potentially more than double the Italian annual rate (€100,000) (£84,590) to remain in the UK. Any government would be wise to rethink how to raise more revenue from these individuals and keep them in the UK.
In light of the election and non-dom proposals, current non-doms in the UK should be reviewing their arrangements and structures, and making use of the existing rules while they are still available.
Dhana Sabanathan is a private wealth partner at Michelmores LLP
