Temporary change of residency:
With a temporary move, income will be taxed in the destination state (the new tax residence) but exit tax may not be triggered in the departure state.
To create evidence that the move is not permanent, an apartment can be still available in the departure state, and if there is a double tax treaty in place, there also shall be a plausible explanation why the centre of interest remains there.
Some countries like Germany have modified the return- rules: if EU/EEA citizens move within the EU/EEA and plan to return within 7 years, authorities shall be notified, but they shall not ask for securities. On application, the return period can be extended for additional 5 years.
This rule allows to leave the country temporarily, return and then exit permanently with little or no exit tax, if the value of the hidden reserves in the participations has decreased during the first period of absence.
Donations, trusts, foundations:
In countries where there is no or little gift tax, assets can be entered into foundations, trusts or be donated before the change of residency.
Sometimes it is possible to form a foundation in the same country that receives and holds the assets. Then there is no exit tax if the natural person changes the residence country.